What is a motor protection circuit breaker? A motor protection circuit-breaker is an electric switching device that turns power off as soon as an overheating danger is suspected.
Magnetic-only circuit breakers switch off when a short-circuit arises in the motor, or somewhere in its supplying and controlling chain. Thermal-magnetic circuit breakers switch off in case of a short-circuit, and also when the motor is mechanically overloaded, or when the supplying line is electrically overloaded (for instance in case one of the three phases is accidentally disconnected).
To mitigate the main electrical risks of fire and burns, regulations in force make mandatory dedicated protection for every electric motor with rated power 500 W and above, which is achieved:
Either by a thermal-magnetic circuit breaker. Or by a magnetic circuit breaker (or a fuse carrier) combined with a motor protection overload relay or an advanced motor protection relay.
To mitigate the main electrical risks of fire and burns, regulations in force make mandatory dedicated protection for every electric motor with rated power 500 W and above, which is achieved:
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TeSys Deca - frame 2
Circuit-breakers, coordinated with TeSys Deca contactors, to protect motors up to 32 A (15 kW / 400 V) Formerly named TeSys GV2. Motor circuit breakers providing short circuit and overload protections, manual isolation, manual control and in 45 mm standard width.
Part of TeSys
TeSys Deca - frame 4
Circuit-breakers, coordinated with TeSys Deca contactors, to protect motors up to 115 A (55 kW / 400 V) Formerly named TeSys GV4. A compact, robust and innovative motor circuit breakers line.
Part of TeSys
TeSys Deca - frame 3
Circuit-breakers, coordinated with TeSys Deca contactors, to protect motors up to 80 A (45 kW / 400 V) Formerly named TeSys GV3. Motor circuit breakers providing overload and short-circuit protections, manual control and isolation, in a 55 mm wide housing.
Part of TeSysBrowse by Ranges (2)
TeSys Quickfit
Motor starter assembly and connection components For motor starters up to 32 A (15 kW/400 V)
Part of TeSys
TeSys Giga circuit-breakers
Circuit-breakers, coordinated with TeSys Giga contactors, to protect motors up to 500 A (250 kW / 400 V) Formerly named "TeSys GV5/GV6", TeSys Giga circuit-breakers protect large electric motors from overloads, short-circuits, phase unbalance and phase-loss faults.
Part of TeSys