Product category:
Machine Safety Monitoring and Control
News Release from: Moeller Electric | Subject: Residual current circuit breakes (RCCBs)
Edited by the Engineeringtalk Editorial
Team on 20 April 2000
RCCBs provide protection from fault
currents
Moeller Electric has just introduced FIP, a new family of high quality residual-current/earth leakage circuit-breakers
New Moeller RCCBs provide fast reliable protection from fault currents Moeller Electric has just introduced FIP, a new family of high quality residual-current/earth leakage circuit-breakers designed to provide reliable detection and disconnection of fault currents Manufactured to meet or exceed the full range of national and international safety standards, FIP provides extremely reliable protection in even the most demanding environments such as building-site power distribution boards, humid manufacturing halls, mining installations and agricultural workshops
This article was originally published on Engineeringtalk on 14 Jul 2008 at 8.00am (UK)
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Employing pulse-current sensitivity FIP breakers detect both AC and pulsating DC residual currents, which occasionally occur close to rectifier systems.
In the event of a residual current arising, the devices disconnect so rapidly, with tripping times under 40ms, that neither systems nor personnel come to any harm.
Moeller offers both two- and four-pole versions.
Users have the choice of a number of different response thresholds set at 30mA, 100mA, 300mA and 500mA - the higher rated fault current values being ideal for fire protection.
Rated uninterrupted currents vary from 16A up to 125A.
The modules are surge-proof up to 250A.
A special version, the FIPS, has been developed to additionally meet the requirements for selective protection.
Surge-proof up to 5kA, this unit allows the arrangement of residual-current operated circuit-breakers in time-selective progression.
In the case of a fault only the breaker immediately upstream of the fault location trips out, while the breakers further upstream - with greater rated fault currents - do not disconnect.
Thus unaffected parts of the system continue in operation, avoiding unnecessary stoppages.
A comprehensive range of accessories are available for the FIP family including: auxiliary contacts, voltage releases, a test module and a remote-switching module, automatic reclosing as well as an automatic restart following an unintended tripping or brief disruption.
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