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The Phoenix Contact 0903034 is an electronic miniature circuit breaker designed to selectively protect 24V DC load circuits. It features an active electronic current limitation for short circuits and an overload shutdown function that reacts faster than the power supply unit. This breaker can handle capacitive loads up to 20,000 µF and provides clear signaling through a multi-color LED and integrated status output.
With a current rating of 3A and a voltage rating of 24VDC, this solid state circuit breaker is suitable for various applications requiring reliable protection. It has a design width of 12.5 mm and is designed for easy mounting onto NS 35 DIN rails using screw connections. The device can be reset manually via a slide switch or electronically through a dedicated reset input.
Key features include selective load protection with an electronic shutdown characteristic curve, active current limitation, and safe overload shutdown from 1.1 times the nominal current. The breaker's residual current is restricted to 1.3 - 1.8 times the nominal current during faults. Wiring and signaling tasks are simplified with power rails and plug-in bridges.
| 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 3A.
The voltage rating is 24VDC.
It is a solid state circuit breaker.
It can be activated again using the electronic reset input or manually on the device using the slide switch.
It enables capacitive loads of up to 20,000 µF to be switched on.
Safe overload shutdown occurs from 1.1 x IN upwards.