MX Shunt Realse and MN Undervoltage Release

Circuit breakers controlled by MX or MN: when the circuit breakers have been tripped by an MX or MN release, they must be reset before it can be closed.
MX shunt release opens the circuit breakers via an impulse-type (≧20ms) or maintained order, when MX release is supplied, it automatically opens the circuit breaker, opening is ensured for a voltage U≧0.7xUn;
MN under voltage opens the circuit breakers when its supply voltage drops to a value below 35% of rated voltage Un:
■​ Automatic opening of circuit breaker is ensured when the continuous voltage supply to release U≦0.35xUn;
■​ If the supply voltage is between 0.35 and 0.7 Un, opening is possible, but not guaranteed. Above 0.7 Un, opening does not take place;
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Electrical characteristics of shunt release MX

Power supply

VAC

50/60Hz: 24-48-100/130-200/240

50Hz: 380/415, 60Hz: 208/277

VDC

12-24-30-48-60-125-250

Operating range

0.7 to 1.1 Un

Consumption, VA or W

Pick-up: 10

Response time, ms

50

Electrical characteristics of under voltage release MN

Power supply

VAC

50/60Hz: 24-48-100/130-200/240

50Hz: 380/415, 60Hz: 208/277

VDC

12-24-30-48-60-125-250

Operating threshold

Opening

0.35 to 0.7 Un

Closing

0.85 Un

Operating range

0.85 to 1.1 Un

Consumption, VA or W

Pick-up: 10, Hold: 5

Response time, ms

50

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