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The most popular configuration for magnetic protectors is the series trip where the sensing coil and contacts are in series with the load being protected. The handle position conveniently indicates circuit status. In addition to providing conventional overcurrent protection, it’s simultaneously used as an on-off switch.
In the event that over-current protection is not desired, the coil mechanism can be deleted, providing an excellent low cost, single or multi-pole power switch.
100 megohm minimum at 500Vdc between all electrically isolated terminals.
3750Vac (3750V~) shall withstand AC voltages 50/60Hz for 60 seconds between all electrically isolated terminals.
Circuit breakers shall operate a minimum of 10,000 operations; 6,000 with rated current and voltage and 4,000 with no load.
–40°C to +85°C.
IEC 144 Classification
Type handle spacings–IP40. Terminals–IP00.
10 days, 95 percent relative humidity at 40°C in accordance with IEC68-2-3, test C.
Five percent solution at 35°C in accordance with IEC68-2-11, test K, 48 hours.
50g, 11m sec, half sine with rated current, except no current with handle down. Instantaneous units use 80 percent rated current. Test in accordance with IEC68-2-27, test Ea. This assumes that adequate end stops are used to prevent longitudinal movement of the circuit protector.
4g, 5–500Hz (maximum double amplitude displacement 1.5mm) with rated current except no current with handle down. Instantaneous units use 80 percent rated current, in accordance with IEC68-2-6, test F, method A, one hour per plane. This assumes that adequate end stops will be used to prevent longitudinal movement of the circuit protector.