CSM_LY_DS_E_3_1
1
Bi-power Relays
LY
Power-switching Compact
General-purpose Relays
• The standard models include models that are
compliant with the UL, CSA, and SEV safety
standards and with the Electrical Appliances and
Material Safety Act.
• Equipped with an arc barrier for arc interruption.
• Withstand voltages up to 2,000 V.
• New built-in diode and built-in CR circuit models have
joined the series.
• The lineup also includes models that are compliant
with the LR and VDE safety standards.
• Single-pole and doubl e-pole models have AC4
ratings and DC2 ratings (operating coil ratings: 100/
110 VAC, 110/120 VAC, 200/220 VAC, 220/240 VAC,
and 100/110 VDC).
• Three-pole and four-pole models have AC4 ratings
and DC2 ratings (operating coil ratings: 100/110
VAC, 200/220 VAC and 100/110 VDC).
Refer to the Common Relay Precautions.
Refer to the standards certifications and compliance section of your
OMRON website for the latest information on certified models.
Model Number Structure
Note: 1. Cells with a diagonal line cannot be manufactured. Ask your OMRON representative for details on manufacturing products for cells
containing “---” in the above table.
2. If #187 tab terminals are required, use the LY1F-T2 or LY2F-T2 (single-pole or double-pole models only).
3. Refer to page 11 for information on plug-in terminal and socket combinations.
4. Items with an asterisk (*) in the table are certified for UL, CSA, and SEV. This is indicated with a certification mark on the products.
5. Items with two asterisks (**) in the table are certified for UL and CSA. This is indicated with a certification mark on the products.
6. All models in the table are certified for IEC (TÜV).
7. The models with plug-in terminals (single-pole, double-pole, and 4-pole) were combined with the PTF-E for the EC Declaration of
Conformity. These products display the CE Marking.
Structure Relays with Plug-in Terminals Relays with PCB Terminals Case-surface mounting
Classification Number
of poles With operation indicators
Standard models
Compli ance with
Electrical Applia nces
and Material Safety Act
1*LY1 **LY1N *LY1-0 *LY1F
2
*LY2 **LY2N *LY2-0 *LY2F
Bifur-
cated **LY2Z **LY2ZN **LY2Z-0 **LY2ZF
3*LY3 **LY3N *LY3-0 *LY3F
4*LY4 **LY4N *LY4-0 *LY4F
Models with diode for
coil surge absorption
(DC coil specification
only)
1**LY1-D **LY1N-D2 --- ---
2
**LY2-D **LY2N-D2 --- ---
Bifur-
cated **LY2Z-D **LY2ZN-D2 --- ---
3**LY3-D **LY3N-D2 --- ---
4**LY4-D **LY4N-D2 --- ---
Models with CR circuits
for coil surg e
absorption
(AC coil specification
only)
1--- ---
2
**LY2-CR **LY2N-CR
Bifur-
cated **LY2Z-CR **LY2ZN-CR
LY
2
Ordering Information
Models with Plug-in Terminals
Relays with PCB Terminals
Case-surface Mounting
Minimum Order
When ordering the following models, please order the minimum amount that is specified in the following table.
Number of poles 1 pole 2 poles 3 poles 4 poles
Classification Model Rated voltage (V) Model Rated voltage (V) Model Rated voltage (V) Model Rated voltage (V)
Models with
single
contacts
Standard models
LY1
12, 24, 100/110,
110/120,
or 200/220 VAC
LY2
12, 24, 100/110,11 0/
120, 200/220,
or220/240 VAC
LY3
12, 24, 100/110, or
200/220 VAC
LY4
12, 24, 100/110, or
200/220 VAC
12, 24, 48,
or 100/110 VDC 12, 24, 48,
or 100/110 VDC 12, 24, 48,
or 100/110 VDC 12, 24, 48,
or 100/110 VDC
Models with built-in
operation indicators
LY1N
12, 24, 100/110,
110/120,
or 200/220 VAC
LY2N
12, 24, 100/110,11 0/
120, 200/220,
or 220/240 VAC
LY3N
12, 24, 100/110, or
200/220 VAC
LY4N
12, 24, 100/110, or
200/220 VAC
12, 24,
or 100/110 VDC 12, 24, 48,
or 100/110 VDC 12, 24, 48,
or 100/110 VDC 12, 24, 48,
or 100/110 VDC
Models with built-in
diodes
LY1-D
12, 24, 48,
or 100/110 VDC
LY2-D
12, 24, 48,
or 100/110 VDC
LY3-D
12, 24, 48,
or 100/110 VDC
LY4-D
12, 24, 48,
or 100/110 VDC
Models with built-in
diodes and
operation indicators
LY1N-
D2
12, 24, or 48 VDC
LY2N-D2
12, 24, 48,
or 100/110 VDC
LY3N-
D2
12, 24,
or 100/110 VDC
LY4N-
D2
12, 24, 48,
or 100/110 VDC
Models with built-in
CR circuits --- ---
LY2-CR
100/110, 110/120,
200/220, or 220/240
VAC --- --- --- ---
Models with built-in
CR circuits and
operation indicators --- ---
LY2N-CR
100/110, 110/120,
200/220, or 220/240
VAC --- --- --- ---
Bifurcated
contacts
Standard models --- ---
LY2Z
100/110 or200/2 20
VAC --- --- --- ---
--- --- 12, 24, 48, or 100/
110 VDC --- --- --- ---
Models with built-in
operation indicators --- --- LY2ZN
100/110, 110/120,
200/220,
or 220/240 VAC --- --- --- ---
--- --- 12 or 24 VDC --- --- --- ---
Models with built-in
diodes --- ---
LY2Z-D
12, 24, or 48 VDC --- --- --- ---
Models with built-in
diodes and
operation indicators --- --- LY2ZN-
D2 12, 24, or 100/110
VDC --- --- --- ---
Models with built-in
CR circuits --- ---
LY2Z-CR
100/110 VAC --- --- --- ---
Models with built-in
CR circuits and
operation indicators --- --- LY2ZN-
CR 100, 110, 110/1 20 ,
or 200/220 VAC --- --- --- ---
Number of poles 1 pole 2 poles 3 poles 4 poles
Classification Model Rated volt age (V) Model R ated volt a g e ( V) Model Rated voltage (V) Model Rated voltage (V)
Models with single
contacts
LY1-0
24,100/110,
110/120, or 200/220
VAC
LY2-0
12, 24,
100/110, 110/120, 200/
220, or 220/240 VAC
LY3-0
24, 100/110,
or 200/220 VAC
LY4-0
24, 100/110, or 200/
220 VAC
12 or 24 VDC 12, 24, 48
or 100/110 VDC 12, 24, 48, or
100/110 VDC 12, 24, 48, or
100/110 VDC
Bifurcated contacts --- ---
LY2Z-0
100/110 VAC --- --- --- ---
24, 48, or
100/110 VDC ---
Number of poles 1 pole 2 poles 3 poles 4 poles
Classification Model Rated voltage (V) Model Rated voltage (V) Model Rated voltage (V) Model Rated vo lt a g e ( V)
Models with single
contacts
LY1F
24, 100/110,
110/120, 200/220,
or 220/240 VAC
LY2F
12, 24, 100/110, 110/
120, 200/220,
or 220/240 VAC
LY3F
1
2, 24, 100/110,
or 200/220 VAC
LY4F
12, 24, 100/110,
or 200/220 VAC
6, 12, 24, or 100/110
VDC 12, 24, 48, or 100/110
VDC 12, 24, or 100/ 110 VDC 12, 24, or 100/110
VDC
Bifurcated contacts --- ---
LY2ZF
24, 100/110,
or 200/220 VAC --- --- --- ---
12 or 24 VDC
Number of poles 2 poles 4 poles
Minimum order
(No. of Relays)
Classification Model Rated voltage (V) Model Rated voltage (V)
Standard models LY2 100/110, 200/220 VAC, 12
or 24 VDC LY4 100/110, 200/220 VAC, or
24 VDC
10
Models with built-in operation
indicators LY2N 100/110, 200/220 VAC, or
24 VDC LY4N 100/110, 200/220 VAC, or
24 VDC
Models with built-in diodes LY2-D 24 VDC --- ---
Models with built-in diodes and
operation indicators LY2N-D2 24 VDC LY4N-D2 24 VDC
LY
3
Ratings and Specifications
Ratings
Standard Models with Built-in Operation Indicators
Operating Coil, Single-pole and Double-pole Mod el s
3 poles
4 poles
Note: 1. The rated current and coil resistance are measure d at a coil te mperatur e of 23°C with to lerances of +15% /–20% f or the AC rated cur rent and ±15% for the
DC coil resistance.
2. The AC coil resistance and inductance values are reference values only. (at 60 Hz).
3. Operating characteristics were measured at a coil temperature of 23°C.
4. The maximum voltage capacity was measured at an ambient temperature of 23°C.
*1. There is variation between products, but actual value s are 80% max.
To ensure operation, apply at least 80% of the rated value (at a coil temperature of +23° C).
*2. The actual values are 30% min. for AC and 10% min. for DC. To ensure release, use a value that is lower than the specified value.
Item Rated current (mA) Coil
resistance
(Ω)
Coil inductance (H) Must-operate
voltage (V) Must-release
voltage ( V) Maximum
voltage ( V)
Power
consumption
(VA, W)
Rated voltage
(V) 50 Hz 60Hz Armature
OFF Armature ON
AC
12 106.5 91 46 0.17 0.33
80% max.*1
30% min.*2
110% of
rated
voltage
Approx. 1.0
to 1.2
(at 60 Hz)
24 53.8 46 180 0.69 1.3
50 25.7 22 788 3.22 5.66
100/110
11.7/12.9 10/11 3,750 14.54 24.6 Approx. 0.9
to 1.1
(at 60 Hz)
110/120
9.9/10.8 8.4/9.2 4,430 19.2 32.1
200/220
6.2/6.8 5.3/5.8 12,950 54.75 94.07
220/240
4.8/5.3 4.2/4.6 18,790 83.5 136.4
DC
6150 40 0.16 0.33
10% min.*2Approx. 0.9
12 75 160 0.73 1.37
24 36.9 650 3.2 5.72
48 18.5 2,600 10.6 21.0
100/110
9.1/10 11,000 45.6 86.2
Item Rated current (mA) Coil
resistance
(Ω)
Coil inductance (H) Must-operate
voltage (V) Must-release
voltage ( V) Maximum
voltage ( V)
Power
consumption
(VA, W)
Rated voltage
(V) 50 Hz 60Hz Armature
OFF Armature ON
AC
12 159 134 24 0.12 0.21
80% max.*1
30% min.*2
110% of
rated
voltage
Approx. 1.6
to 2.0
(at 60 Hz)
24 80 67 100 0.44 0.79
100/110
14.1/16 12.4/13.7 2,300 10.5 18.5
200/220
9.0/10.0 7.7/8.5 8,650 34.8 59.5
DC
12 112 107 0.45 0.98
10% min.*2Approx. 1.4
24 58.6 410 1.89 3.87
48 28.2 1,700 8.53 13.9
100/110
12.7/13 8,500 29.6 54.3
Item Rated current (mA) Coil
resistance
(Ω)
Coil inductance (H) Must-operate
voltage (V) Must-release
voltage ( V) Maximum
voltage ( V)
Power
consumption
(VA, W)
Rated voltage
(V) 50 Hz 60Hz Armature
OFF Armature ON
AC
12 199 170 20 0.1 0.17
80% max.*1
30% min.*2
110% of
rated
voltage
Approx.
1.95 to 2.5
(at 60 Hz)
24 93.6 80 78 0.38 0.67
100/110
22.5/25.5 19/21.8 1,800 10.5 17.3
200/220
11.5/13.1 9.8/11.2 6,700 33.1 57.9
DC
12 120 100 0.39 0.84
10% min.*2Approx. 1.5
24 69 350 1.41 2.91
48 30 1,600 6.39 13.6
100/110
15/15.9 6,900 32.0 63.7
LY
4
Refer to List of Certified Models for a list of models that are certified for safety standards and the Electrical Appliances
and Material Safety Act.
Characteristics
Endurance Under Real Loads (Reference Only)
Classification 1 pole Double-, 3-, and 4-pole models Bifurcated contacts
Item Load Resistive load Inductive load
(cos φ = 0.4, L/R = 7 ms) Resistive load Inductive load
(cos φ = 0.4, L/R = 7 ms) Resistive load Inductive load
(cos φ = 0.4, L/R = 7 ms)
Contact type Single Bifurcated
Contact materials Ag alloy Ag
Rated load
15 A at 110 VAC
15 A at 24 VDC 10 A at 110 VAC
7 A at 24 VDC 10 A at 110 VAC
10 A at 24 VDC 7.5 A at 110 VAC
5 A at 24 VDC 5 A at 110 VAC
5 A at 24 VDC 4 A at 110 VAC
4 A at 24 VDC
Rated carry current 15 A 10 A 7 A
Maximum contact voltage 250 VAC
125 VDC 250 VAC
125 VDC 250 VAC
125 VDC
Maximum contact curren t 15 A 15 A 10 A 10 A 7 A 7 A
Item
Type Single-pole and double-pole models
(standard models and bifurcated contact
models)
Single-pole, double-pole models
(models with built-in operation indicators, models
with built-in diodes, and models with built-in CR
circuits),
3-pole and 4-pole models
Note: 1.
Some models in the LY1 and LY2 Series have an upper
temperature limit of +40°C. This limitation is due to the
diode junction temperature and the elements used.
2.
Refer to the ambient temperature and contact car ry
current characteristics data on page 5 to 7 for
information on operation in temperature conditions that
are not described here.
3.
When you apply a minimum of 10 A of current to an LY1
when it is used in combination with a PTF08A, PTF08A-
E, or PT08, connect ea ch of the following terminal pairs:
(1) to (2), (3) to (4), and (5) to (6).
*1.
If the carry current is 4 A or less , the usable ambient temperature
range is
−
25 to 70° C.
*2.
If the flowing current is 4 A or less, the usable ambient
temperature range is -25 to 55° C.
Ambient operating
temperature −25 to 55°C
(with no icing or condensation)*1 −25 to +40°C
(with no icin g or conden sation)*2
Ambient operating
humidity 5% to 85%
Item Type
Standard models, mode ls with built-in operation
indicators, models with built-in CR circuits, and
models with bu ilt-in diodes
Bifurcated contacts
Contact resistance
*
1
50 mΩ max. Note: The values at the left are initial values.
*1. Measurement cond itions : 1 A at 5 VDC usi ng the vol tage
drop method
*2. Measurement conditions: With rated operating power
applied, not including contact bounce.
Ambient temperature condition: 23° C
*3. Measurement conditions: For 500 VDC applied to the
same location as for dielectric strength measurement.
*4. Ambient temperature condition: 23° C
*5. This value was mea sured at a switching fr equency of 120
operations per minute.
Operating time
*
2
25 ms max.
Release time
*
2
25 ms max.
Maximum
operating
frequency
Mechanical 18,000 operations/h
Rated load 1,800 operations/h
Insulation resistance
*
3
100 MΩ min.
Dielectric
strength
Between coil and contacts
2,000 VAC at 50/60 Hz for 1 min.
Between contacts of
different polarity
Between contacts of the
same polarity 1,000 VAC at 50/60 Hz for 1 min.
Vibration
resistance Destruction
10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double am plitude)
Malfunction
10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double am plitude)
Shock
resistance Destruction 1,000 m/ s 2
Malfunction 200 m/s2
Endurance
Mechanical
AC: 50,000,000 operations min.
DC: 100,000,000 operations min.
(switching frequency: 18,000
operations/h)
Electrical
*
4
1-, 3-, 4-pol e: 200,000 operations min.
2-pole: 500,000 operations min.
(rated load, operating frequency: 1,800
operations/h)
2-pole: 500,0 00 operations min.
(rated load, operating frequency: 1,800
operations/h)
Failure rate P value (reference value)
*
5
100 mA at 5 VD C 10mA at 5 VDC
Weight 1-pole and 2-pole: 40 g, 3-pole: Approx. 50 g, 4-pole: Approx. 70 g
Load
type
Item LY1, 100 VAC LY2, 100 VAC LY4, 100 VAC
Conditions Operating
frequency
Electrical life
(×10,000
operations min.) Conditions Operating
frequency
Electrical life
(×10,000
operations min.) Conditions Operating
frequency
Electrical life
(×10,000
operations min.)
AC motor
400 W, 100 VA C single-
phase with 35-A inrush
current, 7-A current
flow
ON for 10 s,
OFF for 50 s
5
200 W, 100 VA C single-
phase w ith 25-A inru sh
current, 5-A current
flow
ON for 10 s,
OFF for 50 s 20
200 W, 200 VAC three-
phase with 5-A inrush
current, 1-A current
flow
ON for 10 s,
OFF for 50 s
50
750 W, 200 VAC three-
phase with 18-A inrush
current, 3.5-A current
flow 7
AC lamp
300 W, 100 VAC with
51-A in ru sh c u rr en t , 3-
A current flow
ON for 5 s,
OFF for 55 s
10 300 W, 100 VAC with
51-A inrush current, 3-
A current flow
ON for 5 s,
OFF for 55 s 8300 W, 100 VAC with
51-A inrush current, 3-
A current flow
ON for 5 s,
OFF for 55 s
5
500 W, 100 VAC with
78-A in ru sh c u rr en t , 5-
A current flow 2.5
Capacitor
(2,000 µF)
24 VDC with 50-A
inrush current, 1-A
curr e nt flow
ON for 1 s,
OFF for 6 s
10
24 VDC with 50-A
inrush current, 1-A
current flow ON for 1 s,
OFF for 15 s
124 VDC with 50-A
inrush curren t, 1-A
curr e nt flow
ON for 1 s,
OFF for 15 s
0.5
24 VDC with 20-A
inrush current, 1-A
current flow 15 24 VDC with 20-A
inrush curren t, 1-A
curr e nt flow
ON for 1 s,
OFF for 2 s
20
AC solenoid
50 VA with 2.5-A inrush
current, 0.25-A current
flow
ON for 1 s,
OFF for 2 s
150 50 VA with 2.5-A inrush
current, 0.25-A current
flow ON for 1 s,
OFF for 2 s
100 50 VA with 2.5-A inrush
current, 0.25-A current
flow
ON for 1 s,
OFF for 2 s
100
100 VA with 5-A inrush
current, 0.5-A current
flow 80 100 VA with 5-A inrush
current, 0.5-A current
flow 50 100 VA with 5-A inrush
current, 0.5-A current
flow 50
LY
5
Engineering Data
Engineering Data
Maximum Switching Capacity
LY1 LY2 LY3 and LY4
Endurance Curve
LY2Z LY1 LY2
Ambient Temperature vs. Must-
operate and Must-release Voltage
LY3 and LY4 LY2Z LY2 100/110 VAC at 50Hz
Ambient Temperature vs. Coil
Temperature Rise
LY2 24 VDC LY1 24 VDC LY1 100/110 VAC at 50Hz
DC inductive load
(L/R = 7 ms)
AC inductive load
(cos φ = 0.4)
DC
resistive load
AC
resistive load
Life:
200,000 operations
0.1
0.5
1
5
10
15
0105 50 100 500 1,000
Contact voltage (V)
Contact current (A)
DC inductive load
(L/R = 7 ms)
AC inductive load
(cos φ = 0.4)
DC
resistive load
AC
resistive load
Life:
500,000 operations
0.1
0.5
1
5
10
0105 50 100 500 1,000
Contact voltage (V)
Contact current (A)
DC inductive load
(L/R = 7 ms)
AC inductive load
(cos φ = 0.4)
DC
resistive load
AC
resistive load
Life:
200,000 operations
0.1
0.5
1
5
10
0105 50 100 500 1,000
Contact voltage (V)
Contact current (A)
DC inductive load
(L/R = 7 ms)
AC inductive load
(cos φ = 0.4)
DC
resistive load
AC
resistive load
Life: 500,000 operations
0.1
0.5
1
5
10
0105 50 100 500 1,000
Contact voltage (V)
Contact current (A)
24 VDC
resistive load
24 VDC
inductive load
(L/R = 7 ms)
110 VAC
resistive load
110 VAC inductive load
(cos φ = 0.4)
10
50
100
500
1,000
02 4 68101214 1816 20
Switching current (A)
Number of operations (×104 operations)
24 VDC
resistive load
24 VDC
inductive load
(L/R = 7 ms)
110 VAC
resistive load
110 VAC inductive load
(cos φ = 0.4)
10
50
100
500
1,000
02 4 68101214 1816 20
Switching current (A)
Number of operations (×104 operations)
24 VDC
resistive load
24 VDC inductive load
(L/R = 7 ms)
110 VAC
resistive load
110 VAC inductive load
(cos φ = 0.4)
10
50
100
500
1,000
02 4 68101214 1816 20
Switching current (A)
Number of operations (×104 operations)
100
80
60
40
20
0
−40 −20 0 20 40 60 80
Ambient temperature (°C)
Must-operate/must-release voltage (%)
Number of Relays: 5
(average value)
Must-operate voltage
Must-release voltage
100
80
60
40
20
0
−40 −20 0 20 40 60 80
Ambient temperature (°C)
Must-operate/must-release voltage (%)
Number of Relays:
5 (average value)
Must-operate voltage
Must-release voltage
120
100
110
80
90
70
60
50
40
10
20
30
010 20 30 40 50 60 70 80
Ambient temperature (°C)
Coil temperature rise (°C)
No contact current
15 A
10 A
7 A
5 A
3 A
Rated power consumption: 1 W
Rating: 100% applied
Maximum operating
temperature (120° C)
120
100
110
80
90
70
60
50
40
10
20
30
0
Ambient temperature (°C)
Coil temperature rise (°C)
No contact current
15 A
10 A
7 A
5 A
3 A
Rated power consumption: 1 VA
Rating: 100% applied
Maximum operating
temperature (120° C)
10 20 30 40 50 60 70
80
LY
6
LY2 24 VDC LY2 100/110 VAC at 50Hz LY3 24 VDC
LY3 100/110 VAC at 50Hz LY4 24 VDC LY4 100/110 VAC at 50Hz
Models with built-in diodes
The diode absorbs surge from the coil.
With Diode Without Diode
Models with Built-in CR Circuits
With CR Without CR
10 20 30 40 60 7050 80
Ambient temperature (°C)
120
110
100
80
90
70
60
50
40
30
20
10
0
Coil temperature rise (°C)
No contact current
Maximum operating
temperature (120° C)
10 A
5 A
3 A
Rating: 100% applied
Rated power consumption: 1 W
7 A
10 20 30 40 60 7050 80
Ambient temperature (°C)
120
110
100
80
90
70
60
50
40
30
20
10
0
Coil temperature rise (°C)
Rating: 100% applied
Rated power consumption: 1.0 VA
No contact current
Maximum operating
temperature (120° C)
10 A
7 A
5 A
3 A
10 20 30 40 60 7050 80
120
110
100
80
90
70
60
50
40
30
20
10
0
Ambient temperature (°C)
Coil temperature rise (°C)
Rating: 100% applied
Rated power consumption: 1.4 VA
No contact current
Maximum operating
temperature (120° C)
10 A
7 A
5 A
3 A
10 20 30 40 60 7050 80
120
110
100
80
90
70
60
50
40
30
20
10
0
Ambient temperature (°C)
Coil temperature rise (°C)
Rating: 100% applied
Rated power consumption: 1.6 VA
No contact current
Maximum operating
temperature (120° C)
10 A
7 A
5 A
3 A
10 20 30 40 60 7050 80
120
110
100
80
90
70
60
50
40
30
20
10
0
Ambient temperature (°C)
Coil temperature rise (°C)
Rating: 100% applied
Rated power consumption: 1.5 W
No contact current
Maximum operating
temperature (120° C)
10 A
7 A
5 A
3 A
10 20 30 40 60 7050 80
120
110
100
80
90
70
60
50
40
30
20
10
0
Ambient temperature (°C)
Coil temperature rise (°C)
Rating: 100% applied
Rated power consumption: 1.95 VA
No contact current
Maximum operating
temperature (120° C)
10 A
7 A
5 A
3 A
OFFON
A
A’
Di To digital
memory
24 VDC
OFFON
A
A’
To digital
memory
24 VDC
140 V
Note: 1.
Make sure that the polarity is correct.
2.
The release time will increase, but the
25-ms specification for standard models
is satisfied.
3.
Diode characteristics:
Reversed dielectric strength: 1,000 V
Forward current: 1 A
A
A’
C = 0.033 μF
R = 120 Ω
282 V
80 V
4.12 ms
9.4 ms
200 AC
A
A’
A
A’
To digital
memory
scope
msec
2.5
600 V
282 V
ms
2.5
200 AC
LY
7
Malfunctioning Shock
LY2 100/110 VAC
Dimensions (Unit: mm)
Solder terminals
Y
XZ
X'
Z'
Energized
Not energized
Y'
Unit: m/s2
560
720
520
450
500
370
520
700
440
500
600
350
X'
Y' Z'
Y
X
Z
Shock direction
36 max.
21.5 max.
6.4
0.5
3
5
28 max.
Eight, 2-dia. holes
LY1
LY1N
LY1-D
LY1N-D2
Note: 1. For the DC models, check the coil polarity
when wiring and wire all connections
correctly.
2. The indicator is red f or AC and green for DC.
3. The operation indicator indicates the
energization of the coil and does not
represent conta ct operation.
Terminal Arrangement/Internal Connecti ons (Bottom View)
LY1 LY1N-D
(The coil has no polarity.)
(Check the coil polarity when wiring
and wire all connections correctly.)
LY1N
DC Models AC Models LY1N-D2
Check the coil polarity when
wiring and wire all connections
correctly.
(The coil has no polarity.)
Check the coil polarity when wiring
and wire all connections correctly.
36 max.
21.5 max.
6.4
0.5
3
5
28 max.
Eight, 3-dia. holes
LY2
LY2Z
LY2N
LY2ZN
Note: 1. For the DC models, check the coil polarity
when wiring and wire all connections
correctly.
2. The indicator is red for AC and g reen for DC.
3. The operation indicator indicates the
energization of the coil and does not
represent conta ct operation.
LY2(Z)N
DC Models AC Models LY2(Z)N-D2
Check the coil polarity when
wiring and wire all connections
correctly.
(The coil has no polarity.)
Check the coil polarity when wiring
and wire all connections correctly.
Terminal Arrangement/Internal Connecti ons (Bottom View)
LY2(Z) LY2(Z)-D
(The coil has no polarity.)
Check the coil polarity when wiring and wire all
connections correctly.
LY2-D
LY2Z-D
LY2N-D2
LY2ZN-D2
N = 20
Measurement: Shock was applied 2 times each in 6 directions along 3 axes
with the Relay energized and not en ergized to check the shock values that
cause the Relay to malfunction.
Criteria: Non-energized: 200 m/s2 , Energized: 200 m/s2
LY
8
LY3
LY3N
LY3-D
36.5 max.
31.5 max.
6.4
0.5
3
5
28 max.
Eleven, 3-dia. holes
Note: 1. For the DC models, check the coil polarity
when wiring and wire a ll connections correctly.
2. The indicator is red for AC and green for DC.
3. The operation indicator indicates the
energization of the coil and does not represent
contact operation.
Terminal Arrangement/Internal Connecti ons (Bottom View)
LY3 LY3-D
(The coil has no polarity.)
Check the coil polarity when wiring
and wire all connections correctly.
LY3N
DC Models AC Models
Check the coil polarity when
wiring and wire all connections
correctly.
(The coil has no polarity.)
LY4
LY4N
LY4-D
LY4N-D2
36 max.
41.5 max.
6.4
0.5
3
5
28 max.
Fourteen, 3-dia. holes
Note: 1. For the DC models, check the co il polarity when wiring and wire all connections correctly.
2. The indicator is red for AC and green for DC.
3. The operation indicator indi cates the energization of the coil and does not represent contact operation.
LY4N
DC Models AC Models
Check the coil polarity when
wiring and wire all connections
correctly.
(The coil has no polarity.)
Terminal Arrangement/Internal Connecti ons (Bottom View)
LY4 LY4-D
(The coil has no polarity.)
Check the coil polarity when wiring
and wire all connections correctly.
LY4N-D2
Check the coil polarity when wiring
and wire all connections correctly.
LY2-CR
LY2Z-CR
LY2N-CR
LY2ZN-CR
53 max.
21.5 max.
6.4
0.5
3
5
28 max.
Eight, 3-dia. holes*
*These dimensions are for the LY2N-CR.
Terminal Arrangement/Internal Connections (Bottom View)
LY2(Z)-CR LY2(Z)N-CR
(The coil has no polarity.)
C = 0.033 μF
R = 120 Ω
CR element
LY
9
36 max.
21.5 max.
28 max.
1 pole 2 poles 3 poles 4 poles
Five, 2.5-dia. holes Eight, 2.5-dia. holes Eleven, 2.5-dia. holes Fourteen, 2.5-dia. h
Relays with PCB Terminals
LY1-0, LY3-0,
LY2-0, and LY4-0
Note: The figures and dimensions depicted here are for the LY2-0.
The dimension with an asterisk (*) is 6.4 for the LY1-0.
Note: 1. The dimensional tolerance is 0.1 mm.
2. There are exposed parts (conductive parts) on the LY1-0
other than the termin als. Be car eful when using t his Relay
on a double-sided PCBs.
PCB Processing Dimensions (Bottom View)
LY1-0 LY2-0 LY3-0 LY4-0
Terminal Arrangement/Internal Connections (Bottom View)
(The coil has no polarity.)
Eight, 2-dia. holes*
35.5 max.
22.5 max.
29 max.
44 max.
Two, 3.5-dia. holes or
two M3 screw holes
Case-surface mounting
LY1F
LY2F
Note: The figures and dimensions depicted here are for the LY1F. The
LY2F is also conforms to these measurements.
Note: The dimensional
tolerance is ±0.1 mm.
Mounting Hole
Dimensions LY1F LY2F
Terminal Arrangement/Internal
Connections (Bottom View)
(The coil has no polarity.)
32 max.
Eleven, 3-dia. holes
36 max.
28.5 max. 44 max.
Two, 3.5 dia. holes or
two M3 screw holes
LY3F Mounting Hole
Dimensions
LY3F
Terminal Arrangement/Internal
Connections (Bottom View)
(The coil has no polarity.)
35.5 max.
Fourteen,
3-dia. holes
41.5 max.
28 max. 44 max.
Three, 3.5 dia. holes or
two M3 screw holes
LY4F Mounting Hole
Dimensions LY4F
Terminal Arrangement/Internal
Connections (Bottom View)
(The coil has no polarity.)
LY
10
Details on Safety-standard-certified Models, LY@
• Standard models are certified for the UL, CSA, and SEV safety standards.
• Refer to Model Number Structure on page 1 for a list of applicable models.
• The rated values for safety standard certification are not the same as individually defined performance values. Always check the specifications before use.
UL-certified Models (File No. E41643)
TÜV-certified Models (File No. R50030064, EN
61810-1)
CSA-certified Models (File No. LR31928)
SEV-certified Models (File No. 11, 0573)
• When ordering a model that is certified for VDE or Lloyd’s Register (LR) standards, always specify “VDE-certified Model” or “LR Standard-
certified Model” with your order.
VDE Certification (Certification No. 9903, 9947, EN 61810-1)
Compliance with Electrical Appliances
and Material Safety Act
All standard models comply with the Electrical Appliances and
Material Safety Act.
LR-certified Models (File No. 00/10047)
Model Number of
poles Coil ratings Contact ratings Certified number
of operations
LY
@
1
6 to 240 VAC
6 to 120 VDC
15 A, 30 VDC resistive load
6,000 operations15 A, 240 VAC inductive load
1/2 HP, 120 V AC rated horsepower
TV-5, 120 VA C , TV r ating 25,000 operations
2
15 A, 120 VAC resistive load
6,000 operations
15 A, 28 VDC resistive load
12A, 240 V A C indu ctive loa d
1/2 HP, 120 V AC rated horsepower
TV-3, 120 VA C , TV r ating 25,000 operations
3
4
10A, 30 VD C resistive load
6,000 operations10A, 240 V A C indu ctive loa d
1/3 HP, 240V AC rated horsepower
Model Number of
poles Coil ratings Contact ratings Certified number
of operations
LY
@
1
6 to 240 VAC
6 to 110 VDC
15 A, 110 VDC resistive load
200,000
operations
10 A, 110 VAC inductive load
10 A, 250 VAC resistive load
7A, 250 VAC inductive load
10 A, 30 VDC resistive load
7 A, 30 VDC inductive lo ad
2
10 A, 110 VAC resistive load
7.5A, 110 VAC inductive load
7A, 250 VAC resistive load
4 A, 250 VAC inductive load
7 A, 30 VD C re sistiv e load
4 A, 30 VDC inductive lo ad
3
410 A, 110 VAC resistive load 100,000
operations
7.5A, 110 VAC inductive load
Model Number of
poles Coil ratings Contact ratings Certified number
of operations
LY
@
1240 VAC m a x.
120 VDC m a x.
15A, 30 V D C re sistive lo ad
6,000 oper ation s10 A, 120 V A C indu ctive loa d
10A, 240 VAC inductive load
TV-5, 120 VAC, TV rating 25,000 operations
2
6 to 240 VAC
6 to 120 VDC
15 A, 30 VD C resistive load
6,000 oper ation s
15A, 120 VAC inductive load
10A, 240 VAC inductive load
1/3 HP, 120 V AC rated horsepower
240 VAC m a x.
120 VDC m a x. TV-3, 120 VAC, TV rating 25,000 operations
3
46 to 240 VAC
6 to 120 VDC 10A, 30 V D C re sistiv e load 6,000 oper ation s
10A, 240 VAC inductive load
Model Number of
poles Coil ratings Contact ratings Certified number
of operations
LY
@
16 to 110 VDC
2 to 240 VAC 15 A at 24 VDC
6,000 oper ation s
15 A at 220 VAC
2 to 4 6 to 110 VDC
2 to 240 VAC 10 A at 24 VDC
10 A at 220 VAC
Model Number of
poles Coil ratings Contact ratings Certified number
of operations
LY
@
-VD
1
6, 12, 24, 50,
110, or 22 0 V A C
6, 12, 24, 48,
or 110 VDC
10 A, 220 VAC resistive load
200,000
operations
7 A, 220 VAC inductive load
10 A, 28 VDC resistive load
7 A, 28 VDC inductive lo ad
2
7 A, 220 VAC resistive load
4 A, 220 VAC inductive load
7 A, 28 VD C re sistiv e load
4 A, 28 VDC inductive lo ad
Model Number of
poles Coil ratings Contact ratings
LY
@
16 to 240 VAC
6 to 120 VDC
15 A at 200 VAC
2
3
410A at 200 VAC
Model Number of
poles Coil ratings Contact ratings
LY
@
26 to 240 VAC
6 to 110 VDC 7.5 A, 230 VAC inductive load
4 5 A, 24 VDC inductive load
LY
11
Connection Sockets (Refer to Common Socket and DIN Track Products for external dimensions.)
Relay Hold-down Clips (Refer to Common Socket and DIN Track Products for external dimensions.)
Connection Socket and Hold-down Clip Application Table
Mounting Height with Sockets
Used with Socket
Used with Socket mounting
plate
For models with built-in CR circuits
PYC-A1 PYC-P PYC-S Y92H-3 PYC-1
Item Front-mounting Sockets Back-mounting Sockets
Applicable Relay Number
of poles
Track or screw mounting Solder terminals, wrapping terminals, or PCB
terminals
PTF08A PTF11A PTF14A
Applicable
Hold-down
Clips
PT08(QN)
PT08-0 PT11(QN)
PT11-0 PT14(QN)
PT14-0
Applicable
Hold-down
Clips
• Standard models: LY@
• Bifurcated contact models:
LY@Z
• Models with built-in
operation indicators: LY@N
• Models with built-in diodes:
LY@-D(2)
1 or 2
PYC-A1
PYC-P
3
4
• Models with built-in CR
circuits: LY@-CR 2Y92H-3 PYC-1
Note: The PTF@A-E Relays have finger protection. Round terminals cannot be used.
Use forked terminals.
Item Front-mounting
Sockets Back-mounting Sockets
Number
of poles Tr ack or screw
mounting Solder terminals Wrapping terminal s Relays with PCB
Terminals
1 or 2 PTF08A(-E) PT08 PT08QN PT08-0
3PTF11A PT11 PT11QN PT11-0
4
PTF14A(-E) PT14 PT14QN PT14-0
The following front connector sockets are all
individually certified for UL/CSA: PTF08A,
PTF11A, and PTF14A.
Model Standards No.
PTF08A
PTF11A
PTF14A
UL File No. E87929
CSA
File No. LR31928
Approx. 3
Approx. 2.5
Front-mounting Sockets Back-mounting Sockets
Note: 1. The PTF@A can be mounted on a track or with screws.
2. The measurements in parentheses are for the LY@-CR
(built-in CR circuit).
LY
12
Socket Mounting Plates (t = 1.6)
OMRON can provide Socket Mounting Plate for convenient Socket
installation. Please use these Plates as required.
Type
Safety Precautions
Refer to the Common Relay Precautions for precautions that apply to all Relays.
• Use two M3 screws to attach case-surface-mounted models
(LY1F, LY2F, LY3F, and LY4F) and tighten the screws securely.
(Normal tightening torque: 0.98 N·m)
• For Relays with Tab Terminals, select a wire diameter for the lead
wires that connect to the faston receptacle terminals that is within
the allowed range for the load current.
• Do not impose excessive external force on the Relay when
inserting the Relay to the faston receptacle or pulling the Relay out
from the faston receptacle. Do not attempt to insert a terminal
diagonally or insert or pull out more than one terminal at the same
time.
• LY Single-contact Relays are for power switching applications. Do
not use the LY Series for switching minute loads of 100 mA or less,
such as signals.
About the Built-in Diode and CR Elements
The diode or CR element that are built into the Relay are designed to
absorb the reverse voltage from the Relay coil. If a large surge in
voltage is applied to the diode or CR element from an external source,
the element will be destroyed.
If there is the possibility of large voltage surges that could be applied
to the elements from an external source, take any necessary surge
absorption measures.
Applying 10 A or More When Using an LY Relay
with the Following Sockets
When you use an LY-series relay in combination with the PTF08A,
PTF08A-E, or PT08, connect each of the following terminal pairs: (1)
to (2), (3) to (4), and (5) to (6).
Relay Replacement
To replace the Relay, turn OFF the power supply to the load and
Relay coil sides to prevent unintended operation and possible
electrical shock.
Number of
sockets 110 12 18
Sockets
PT08
PT08QN PYP-1 --- --- PYP-18
PT11
PT11QN PTP-1-3 --- PTP-12 ---
PT14
PT14QN PTP-1 PTP-10 --- ---
Precautions for Correct Use
59
52±0.1
42±0.1 49
7.7
R5
Four,
3.4-dia. holes
28
42
5.1 49
Two, 3.4-dia. holes
49
42±0.1
42±0.1 49
7.7
R5 Four, 3.4-dia. holes
17×27.4 = 465.8±0.6
17×27.4 = 465.8±0.6
17×27.4 = 465.8±0.6
492
4942±0.1
5.1
21.6
21.6
13.1
4.5
3.4 R1.7
72, oval holes
PYP-1 PTP-1-3 PTP-1 PYP-18
49
42
±0.1
7.7
9×49.4 = 444.6
±0.6
7.4
9×49.4 = 444.6
±0.6
23.7
492
9×49.4 = 444.6
±0.6
7.4
R1.7
40, oval holes
4.5
1.1 3.4
49
42
±0.1
7.7
11×39.4 = 433.4
±0.6
13
11×39.4 = 433.4
±0.6
11×39.4 = 433.4
±0.6
29.3
492
R2.25
48, oval holes
4.5
3.4
12, square holes
PTP-10 PTP-12
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products
were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate
modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining
suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2013.6
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2013 All Right Reserved.