APEM www.apem.com 1
21000N series
Low profile toggle switches
Distinctive features and specifications
❑ Available with threaded or plain bushing, both with
mounting plate
❑ Low profile - same height for single and double pole
❑ Wave solderable only
MATERIALS
• Case and cover : PBT
• Actuator : brass, nickel plated
• Bushing : brass, nickel plated
• Contacts
A: silver
LD : brass, gold plated
ELECTRICAL SPECIFICATIONS
• Max. current/voltage rating with resistive load :
- silver contacts (A) : 4A 30VDC
- gold plated brass contacts (LD) : 100mA 30VDC
• Minimum load :
- silver contacts (A) : 100mA 10V
- gold plated brass contacts (LD) : 10µA 5VDC - 10mA 50mV
• Initial contact resistance : 20 mΩ max.
• Insulation resistance : 1.000 MΩ min. at 500VDC
• Dielectric strength :
1.000 Vrms 50 Hz min. between terminals
2.000 Vrms 50 Hz min. between poles
2.000 Vrms 50 Hz min. between terminals and frame
• Electrical life at full load :
- silver contacts (A) : 20.000 cycles
- gold plated brass contacts (LD) : 50.000 cycles
• Low level or mechanical life : 100.000 cycles
GENERAL SPECIFICATIONS
• Operating temperature : -40°C to +85°C
2 APEM
www.apem.com
21000N series
Low profile toggle switches
Overview
21 N
SERIES
Terminals and bushings
1Straight PC terminals,
threaded bushing
2Straight PC terminals,
plain bushing
Number of poles
3Single pole
4Double pole
Electrical functions
6ON - ON
9ON OFF ON
7MOM OFF MOM
8ON OFF MOM
2ON - MOM
Version
N
For all models.
Finish
Blank Bright chrome
finish
GBlack finish on
bushing, actuator and
hardware.
Contact materials
A
Silver
LD Brass, gold plated
Sealing
Blank Epoxy sealed
terminals standard
KSealing by O-ring
ABOUT THIS SERIES
On the following pages, you will find successively :
- model structure of switches
- options in the same order as in above chart
Dimensions : first dimensions are in mm while inches are shown as bracketed numbers.
Mounting accessories : standard hardware supplied with all models with threaded bushing : 2 hex nuts 8 mm (.314) across flats.
Standard and special hardware available are presented in section I.
Packaging unit : 50 pieces for SP models, 25 pieces for DP.
APEM www.apem.com 3
21000N series
Low profile toggle switches
Threaded bushing - double pole
Threaded bushing - single pole
MODEL
STRUCTURE
III II I
2-3 1-2
21136N ON - ON
21139N ON OFF ON
21137N MOM OFF MOM
21138N ON OFF MOM
21132N ON - MOM
III II I
2-3 1-2
5-6 4-5
21146N ON - ON
21149N ON OFF ON
21147N MOM OFF MOM
21148N ON OFF MOM
21142N ON - MOM
Plain bushing - single pole
III II I
2-3 1-2
21236N ON - ON
21239N ON OFF ON
21237N MOM OFF MOM
21238N ON OFF MOM
21232N ON - MOM
• Epoxy sealed terminals standard
• 1 and 2 pole configurations
(.043 DIA)
Ø1.10
5.08 10.16
10.16
2.54
(.100)
(.200) (.400)
(.400)
11.30
5.08
0.60
10.16
11.50
6.75
17.007.00
Ø3.00
3.60
2.54
11.00
0.50
10.16
0.60
(.019)
(.023)
(.444)
(.400)
(.433)
(.100)
(.118 DIA)
(.141)
(.265)
(.400)
(.023)
(.200)
22˚
(.452)
(.275) (.669)
I
II
III
(.246 DIA)
Ø6.25
EPOXY
17.007.00
(.275) (.669)
11.50
(.452)
22˚
5.08
0.60
10.16
(.400)
(.023)
(.200)
3.60
(.141)
Ø6.35-40UNS
(1/4-40UNS)
6.75
(.265)
Ø3.00
(.118 DIA)
(.100)
(.400)
(.826)
(.444)
(.019)
(.023)
(.400)
11.30
21.00
0.50
10.16
0.60
10.16
(.400)
5.08
(.200)
(.400)
10.16
(.043 DIA)
Ø1.10
(.200)
5.08
10.16
2.54
III
II
I
EPOXY
(.669)(.275)
(.452)
22˚
(.200)
(.023)
(.400)
(.265)
(.141)
(1/4-40UNS)
(.118 DIA)
(.100)
(.433)
(.400)
(.444)
(.023)
(.019) 0.60
10.16
0.50
11.00
2.54
3.60
Ø3.00
7.00 17.00
6.75
11.50
10.16
0.60
5.08
Ø6.35-40UNS
11.30
(.400)
(.400)(.200)
(.100)
2.54
10.16
10.165.08
Ø1.10
(.043 DIA)
I
II
III
EPOXY
4 APEM
www.apem.com
21000N series
Low profile toggle switches
Plain bushing - double pole
III II I
2-3 1-2
5-6 4-5
21246N ON - ON
21249N ON OFF ON
21247N MOM OFF MOM
21248N ON OFF MOM
21242N ON - MOM
PANEL CUT-OUT PCB MOUNTING
POSITIONS AND CONNECTIONS
Bottom view
Function 6 ON - ON
Function 9 ON OFF ON
Function 7 MOM OFF MOM
Function 8 ON OFF MOM
Function 2 ON - MOM
2.54
10.16
5.08
(.200)
Ø1.10
(.043 DIA)
10.16
(.400)
(.200)
5.08 (.400)
10.16
0.60
10.16
0.50
21.00
11.30
(.400)
(.023)
(.019)
(.444)
(.826)
(.400)
(.100)
(.118 DIA)
Ø3.00
(.265)
6.75
(.141)
3.60
(.200)
(.023)
(.400)
10.16
0.60
5.08
22˚
(.452)
11.50
(.669)(.275)
7.00 17.00
Ø6.25
(.246 DIA)
I
II
III
EPOXY
Ø6.50
(.255 DIA)
(.118MAX)
(.307)
7.80
3.00Maxi
(.161)
4.10
1
3
2
54
6
2.3
5.6
6
4
3
1
5
2
6
4
3
1
2
5
4.5
1.2
III II I
APEM www.apem.com 5
21000N series
Low profile toggle switches
CONTACT MATERIALS
ASilver
LDBrass, gold plated
Blank Bright chrome finish on actuator, nickel plating for bushing and hardware.
GBlack finish on bushing, actuator and hardware
KBushing internally sealed by one O-ring (version without washer U360).
Protects the switch against water and dust.
FINISH
SEALING
Blank No sealing except standard.
Epoxy sealed terminals are standard.
➀ O-ring
1
(.110 MAX)
2.8 Maxi
