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Circuit breaker offers remote disconnection via sensor or logic circuitry

01 September 2006

E-T-A Circuit Breakers has introduced a new version of an award winning magnetic circuit breaker which now offers remote disconnection by means of a sensor or control circuitry. The device is suitable for rack, panel or plug-in mounting in telecommunications equipment, plant control systems, the rail industry and other applications where reliable protection in a compact package is essential.
The new variant E-T-A 8345 magnetic circuit breaker for equipment (CBE) is available in single and multi-pole versions, with current ratings from 0.1A to 125A at up to 240Vac or 110Vdc. Without affecting normal over-current operation of the circuit breaker, the addition of a separate relay trip coil enables the main contacts to be opened by means of a sensor, such as a thermostat, or by logic control circuitry. The 125A maximum rating, which E-T-A claims is 25A higher than the industry norm, allows designers to meet increasing demands for power availability without the need for additional space.
The type 8345 is fully approved to UL489, UL1077 and EN 60934 standards. Meeting these standards requires the circuit breaker to be fit for purpose after interrupting a short circuit at its maximum specified fault rating. An extra measure of protection for expensive electrical equipment is assured, reducing costly downtime caused by power interruption. Different mounting methods, toggle colours, water splash covers and mechanical toggle guards are available.

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