Feature Overview
Feature Overview
ComPacT NSXm devices have the following features:
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Circuit breakers rated from 16 to 160 A
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Available constructions: 3 and 4 poles
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Standard compliance to IEC/EN 60947-2 (circuit breakers and earth-leakage circuit breakers) and IEC/EN 60947-3 (switch-disconnectors)
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Breaking capacities: 16, 25, 36, 50, 70 kA at 415 Vac
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Voltage up to 440 Vac for earth-leakage circuit breakers (compliance to IEC/EN 60947-2)
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Voltage up to 690 Vac for circuit breakers (compliance to IEC/EN 60947-2) and switch-disconnectors (compliance to IEC/EN 60947-3)
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Field installable electrical accessories
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Optional terminations
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Optional operating mechanisms
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Optional voltage releases
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Optional auxiliary contacts
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Optional insulation accessories
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Optional locking accessories
Isolation Characteristics
Circuit breakers offer positive contact indication and are suitable for isolation in accordance with standards IEC/EN 60947-2 and IEC/EN 60947-3.
The following markings on the device identification label indicate that the devices are capable of isolation:
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Circuit breaker |
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Switch-disconnector |
To confirm the isolation capability, the IEC/EN 60947-2 and 3 standards require specific shock withstand tests.
In accordance with installation rules, circuit breakers can be locked in the O (OFF) position so that work can be carried out with the power off. Circuit breakers can be locked in the O (OFF) position only when they are open.
The choice of locking device depends on the type of actuator: