This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
The SFset circuit breaker has an integrated and independent protection system
The SFset circuit breaker comprises an SF1 into which is integrated a protection system comprising:
• a set of current sensors installed on the lower current terminals of the pole units.
• Two interchangeable sensors,CSa4 and CSb4, sufficient to cover all requirements from 0 A to 630 A
• a VIP type protection relay mounted on the control unit.
• a “Mitop” low consumption, release unit installed on the switching device.
• The unit is fully independent and functions without an auxiliary power supply.
Operating principle:
The protection system is supplied power by sensors which supply:
• the “current” information, processed by the protection unit
• the electrical power required for the whole protection system to operate ;
VIP unit and Mitop release.
All settings are visible and accessible from the front of the device.
The SFset circuit breaker comprises an SF1 into which is integrated a protection system comprising:
• a set of current sensors installed on the lower current terminals of the pole units.
• Two interchangeable sensors,CSa4 and CSb4, sufficient to cover all requirements from 0 A to 630 A
• a VIP type protection relay mounted on the control unit.
• a “Mitop” low consumption, release unit installed on the switching device.
• The unit is fully independent and functions without an auxiliary power supply.
Operating principle:
The protection system is supplied power by sensors which supply:
• the “current” information, processed by the protection unit
• the electrical power required for the whole protection system to operate ;
VIP unit and Mitop release.
All settings are visible and accessible from the front of the device.
Released for: Schneider Electric Egypt and North East Africa
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