Description

The EC-E... electronic miniature circuit-breaker selectively protects all 24 V DC load circuits on power supply units. A combination of active electronic current limitation for short circuits and an overload shutdown function from 1.1 x IN upwards ensures that the miniature circuit-breaker can react to overloads faster than the power supply unit. In this case, the residual current is constantly restricted to 1.3 - 1.8 times the nominal current.

This enables capacitive loads of up to 20, 000 μF to be switched on; loads are shut down only in the event of an overload or short circuit.

Once an overload or short circuit has been detected in the load circuit, the load output of the EC-E... is blocked. The current flow in the faulty circuit is interrupted. The EC-E... and, therefore, the current circuit can be activated again using the electronic reset input or manually on the device using the slide switch.

Wiring and signaling tasks can be implemented easily using power rails and plug-in bridges.

A multi-color LED and the integrated status output display the operating and fault state.

The miniature circuit-breaker has a design width of 12.5 mm and can be snapped onto NS 35 DIN rails using a modular approach. It is equipped with screw connections.

Properties

–Selective load protection, electronic shutdown characteristic curve

–Active current limitation when switching on capacitive loads of up to 20, 000 μF and in the event of an overload/short circuit

–Nominal current can be selected in fixed current strengths from 0.5 A ... 12 A

–Safe overload shutdown from 1.1 x IN upwards, even with long load lines or small cable cross-sections

–Manual on/off switch (S1)

–Clear signaling by means of LED, SF status output, or F alarm output (signal contact), (can be combined)

–RE electronic reset input (option)

–Integrated fail-safe element, adapted to nominal current

–Straightforward wiring using LINE+ power rail and 0 V, as well as signal rails and signal bridges