PKZM4 Motor Protective Circuit Breaker Basic Unit Larger frame size than the PKZM0, but shares the same accessories e.g. auxiliary contactsHigher switching current: 50kA @ either 230Vac or 400Vac without the need for an upstream current limiter Type 1 and 2 co-ordination55mm width The short-circuit release is permanently set to 14 x I n ; the bi-metal release is set to the relevant full load motor current PKZM4 Series A member of the PKZ family of motor protection circuit breakers. Has a rotary knob for switching on or off, which gives a clear indication of the breaker status.
