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The Phoenix Contact 0903042 is an electronic miniature circuit breaker designed to selectively protect 24V DC load circuits. It offers active electronic current limitation for short circuits and an overload shutdown function starting from 1.1 times the nominal current. This ensures faster reaction to overloads than the power supply unit, with residual current restricted to 1.3 - 1.8 times the nominal current.
This circuit breaker enables the switch-on of capacitive loads up to 20,000 µF. It features a manual on/off slide switch and an electronic reset input. Clear signaling is provided via a multi-color LED and an integrated status output. The device has a compact design width of 12.5 mm and can be easily snapped onto NS 35 DIN rails. It is equipped with screw connections for wiring.
Key properties include selective load protection with an electronic shutdown characteristic curve, active current limitation, and safe overload shutdown. It supports fixed nominal current strengths and provides clear status indication. The unit is adapted to the nominal current with an integrated fail-safe element.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The current rating is 1A.
The voltage rating is 24V.
It is a solid state circuit breaker.
It provides safe overload shutdown from 1.1 times the nominal current upwards.
It supports capacitive loads of up to 20,000 µF.
It is mounted on a DIN rail.