Voltage control relay
-
17.5 mm MUS 12 DC Part number 84872140
Control relays monitoring their own power supply
-
MUS :
Over/undervoltage control
Selectable latching (memory) function
-
MUSF :
Over/undervoltage control
Adjustable time delays
Control in 50 Hz, 60 Hz or DC
True RMS measurement
LED status indication
Part numbers
Specifications
Type
Functions
Controlled ranges
84872140
MUS 12 DC
Under/Overvoltage control
9→15VDC
Polarity with DC voltage
AC supply voltage frequency
50 / 60 Hz
±
10 %
Galvanic isolation of power supply/measurement
No
Immunity from micro power cuts
10 ms
Max. measuring cycle time
250 ms/True RMS measurement
Display precision
±
10 % of full scale
Repetition accuracy with constant parameters
±
0,5 %
Measuring error with voltage drift
< 1 % across the whole range
Measuring error with temperature drift
±
0,05 % / °C
Delay on thresold crossing
0,1→10sec(0,+10%)
Repetition accuracy with constant parameters
±
0,5 %
Reset time
1,5 s
Delay on pick
-up
500 ms in AC / 1 s in DC
Type of output
1 single pole changeover relay
Type of contacts
No cadmium
Maximum breaking voltage
250 V AC/DC
Max. breaking current
5 A AC/DC
Min. breaking current
10 mA / 5 V DC
Electrical life (number of operations)
1 x 105
Breaking capacity (resistive)
1250 VA AC
Maximum rate
360 operations/hour at full load
Operating categories acc. to IEC/EN 60947
-5-1
AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations)
30 x 106
Nominal insulation voltage IEC/EN 60664
-1
250 V
Insulation coordination (IEC/EN 60664
-1)
Overvoltage category III : degree of pollution 3
Rated impulse withstand voltage (IEC/EN 60664
-1)
4 KV (1,2 / 50
μ
s)
Dielectric strength (IEC/EN 60664
-1)
2 KV AC 50 Hz 1 min
Insulation resistance (IEC/EN 60664
-1)
> 500 M
Ω
/
500 V DC
Display power supply
Green LED
Display relay
Yellow LED
Casing
17,5 mm
Mounting
On 35 mm symmetrical DIN rail, IEC/EN 60715
Mounting position
All positions
Material : enclosure plastic type VO to UL94 standard
Incandescent wire test according to IEC 60695-2-
11 & NF EN 60695
-2-11
Protection (IEC/EN 60529)
Terminal block : IP 20
Casing : IP 30
Connecting capacity IEC/EN 60947
-1
Rigid : 1 x 4
2 - 2 x 2.52
mm
2
1 x 11 AWG - 2 x 14 AWG
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014 www.crouzet.com
Accessories
Overview
MUS and MUSF voltage control relays monitor single
-phase DC network voltages.
These products monitor their own supply voltage.
MUS relays allow the user to choose between two operating modes :
- Under/overvoltage
- With or without fault latching
An adjustable time delay, on threshold crossing, provides immunity from transient phenomena, thus preventing spurious triggering of the output relay.
Operating principle
MUS - Under/Overvoltage controller
The operating mode is set by the user.
A switch is used to select under or overvoltage modes, with or without latching.
The switch position, and hence the operating mode, is read by the product on energisation.
If the switch is set to a non-conforming position, the product goes into fault mode, the output relay stays open, and the LEDs flash to signal the position error.
If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the voltage selected on energisation prior to the change of position.
The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation.
Flexible with ferrules : 1 x 2.52 - 2 x 1.52
mm
2
1 x 14 AWG - 2 x 16 AWG
Max. tightening torques
IEC/EN 60947
-1
0,6→1Nm/5,3→8,8Lbf.In
Operating temperature IEC/EN 60068
-2
-
20→+50°C
Storage temperature IEC/EN 60068
-2
-
40→70°C
Humidity IEC/EN 60068
-2-30
2 x 24 hr cycle 95 % RH max. without condensation 55 °C
Vibrations according to IEC/EN60068
-2-6
10→150Hz,A=0.035mm
Shocks IEC/EN 60068
-2-6
5 g
Marking
CE (LVD) 73/23/EEC
-
EMC 89/336/EEC
Product standard
NF EN 60255
-
6 / IEC 60255
-
6 / UL 508 / CSA C22.2 N°14
Electromagnetic compatibility
Immunity EN 61000
-6-
2/IEC 61000
-6-2
Emission EN 61000
-6-
4/EN 61000
-6-3
IEC 61000
-6-
4/IEC 61000
-6-3
Emission EN 55022 class B
Certifications
UL, CSA, GL
Conformity with environmental directives
RoHS, WEEE
Nominal voltage (V)
12 V DC
Power consumption at Un
1 W in DC
Operating range
7→20VDC
Range of adjustment
9→15VDC
Hysteresis
5→20%ofthreshold
Weight
75 g
Description
Code
Removable sealable cover for 17.5 mm casing
84800000
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014 www.crouzet.com
The under or overvoltage threshold value is set by a graduated potentiometer by reading the Un scale to be monitored directly.
The hysteresis is set by a graduated potentiometer from 5 to 20 % of the preset threshold. The hysteresis value cannot be higher than the extremes of the measurement range.
In overvoltage mode, if the controlled voltage exceeds the preset threshold for longer than the time set on the front face (0.1 to 10 s), the output relay opens and LED R is extinguished. During the
time delay, this LED flashes.
Once the voltage falls below the threshold value minus the hysteresis, the relay closes instantaneously.
In undervoltage mode, if the controlled voltage falls below the preset threshold for longer than the time set on the front face (0.1 to 10 s), the output relay opens and LED R is extinguished. During
the time delay, this LED flashes.
Once the voltage rises above the threshold value plus the hysteresis, the relay closes instantaneously.
If "with memory" mode has been selected, the relay opens and stays in this position when threshold crossing is detected. The power supply must be disconnected to reset the product.
N
o
Legend
Threshold
Hysteresis
Overvoltage function relay
Undervoltage function relay
Controlled signal
Delay on threshold crossing (Tt)
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014 www.crouzet.com
N
o
Legend
Threshold
Hysteresis
Overvoltage function relay
Undervoltage function relay
Controlled signal
Delay on threshold crossing (Tt)
N
o
Legend
1 A fast-blow fuse or cut-out
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014 www.crouzet.com
Customisable colours and labels
Fixed threshold in the generic measurement range
Fixed or adjustable time delay
Adjustable hysteresis
Adaptations dedicated to MUS 12 DC, MUS 80 AC, MUS 260 AC :
Possible to delete settings
Adjustable fixed hysteresis
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
23/06/2014 www.crouzet.com
Mouser Electronics
Authorized Distributor
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Crouzet:
84872140