MUS12

KEY FEATURES

  • Control relays monitoring their own power supply
  • Over/undervoltage control
  • Selectable latching (memory) function
  • Over/undervoltage control
  • Adjustable time delays
  • Control in 50 Hz, 60 Hz or \⎓
  • True RMS measurement
  • LED status indication
FunctionsControlled rangesCode
Under/Overvoltage control9 →15 V ⎓84872140
Under/Overvoltage control in window mode9 →15 V ⎓-

Specifications


Supply voltage Un 12 V ⎓
Operating range 7 →20 V ⎓
Power consumption at Un 1 W in ⎓

Hysteresis 5 →20 % of threshold

Weight 75 g

Polarity with ⎓ voltage
Galvanic isolation of power supply/measurement No
Immunity from micro power cuts 10 ms

Frequency of measured signal 0 Hz, 50... 60 Hz
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 Tt 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 ∿ / 1 s in ⎓

Type of output 1 single pole changeover relay
Type of contacts No cadmium
Maximum breaking voltage 250 V ∿/⎓
Max. breaking current 5 A ∿/⎓
Min. breaking current 10 mA / 5 V ⎓
Electrical life (number of operations) 1 x 105
Breaking capacity (resistive) 1250 VA ∿
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 μs)
Dielectric strength (IEC/EN 60664-1) 2 KV ∿ 50 Hz 1 min
Insulation resistance (IEC/EN 60664-1) > 500 MΩ / 500 V ⎓

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 42 - 2 x 2.52 mm2 1 x 11 AWG - 2 x 14 AWG Flexible with ferrules : 1 x 2.52 - 2 x 1.52 mm2 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

Product standard IEC/EN 6025561
Electromagnetic compatibility (EMC) IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4
Certifications UL, CSA, GL
Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC
Conformity with environmental directives RoHS, WEEE

Technical sketches

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. 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.

MUS - Under/overvoltage - without latching

MUS - Under/overvoltage - without latching
Legend
1-
Threshold
2-
Hysteresis
3-
Overvoltage function relay
4-
Undervoltage function relay
5-
Controlled signal
6-
Delay on threshold crossing (Tt)
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.

MUS - Under/overvoltage - with latching

MUS - Under/overvoltage - with latching
Legend
1-
Threshold
2-
Hysteresis
3-
Overvoltage function relay
4-
Undervoltage function relay
5-
Controlled signal
6-
Delay on threshold crossing (Tt)
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.

MUS - MUSF

MUS - MUSF

MUS - MUSF

MUS - MUSF
Legend
1-
Fusible ultra rapide 1 A ou coupe circuit

MUS

MUS
PH RMC2 MUS 12DC

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