| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Breaker Type | |
| Current Rating | |
| Current Rating (Amps) | |
| Mounting Type | |
| Number of Poles | |
| Voltage Rating |
The Phoenix Contact 0903023 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 (I N). 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 supports capacitive loads up to 20,000 µF, shutting down only in the event of an overload or short circuit. Once a fault is detected, the load output is blocked, interrupting current flow. The device can be reactivated using the electronic reset input or the manual slide switch.
With a design width of 12.5 mm, it mounts easily onto NS 35 DIN rails using a modular approach and features screw connections. Clear signaling is provided via a multi-color LED and an integrated status output, displaying operating and fault states. Wiring and signaling tasks are simplified using power rails and plug-in bridges.
The current rating is 1A.
The voltage rating is 24VDC.
It is a solid state circuit breaker.
It is mounted on a DIN rail.
Overload shutdown occurs from 1.1 times the nominal current (I N) upwards.
It can handle capacitive loads of up to 20,000 µF.
It can be reset using the electronic reset input or manually via the slide switch.