Circuit Breakers (2,673 items)

Selective main automatic circuit breaker for mounting direct on 4- or 5 pole 40 mm-busbar system 12 x 5 mm² and 12 x 10 mm², fixing: busbar (with quick adapter) - top-hat rail (with adapter), termi...

Selective main automatic circuit breaker for mounting direct on 4- or 5 pole 40 mm-busbar system 12 x 5 mm² and 12 x 10 mm², fixing: busbar (with quick adapter) - top-hat rail (with adapter), termi...

Selective main automatic circuit breaker for mounting direct on 4- or 5 pole 40 mm-busbar system 12 x 5 mm² and 12 x 10 mm², fixing: busbar (with quick adapter) - top-hat rail (with adapter), termi...

Series NZM..-M circuit-breakers cover all application cases with just four compact sizes and are suitable for the IEC market. Modular function groups always make mounting flexible. With thermomagne...

Basic device motor-protective circuit-breaker, isolating function, can be expanded without tools with PKE-XTU... electronic control units for motor protection. Expandable with auxiliary contacts, v...

Basic device motor-protective circuit-breaker, isolating function, can be expanded without tools with PKE-XTU... electronic control units for motor protection or system/cable protection. Expandable...

String circuit-breakers PKZ-SOL are the fuseless alternative for the protection of photovoltaic modules against short-circuit currents. With their variable tripping range, they can be optimally adj...

String circuit-breakers PKZ-SOL are the fuseless alternative for the protection of photovoltaic modules against short-circuit currents. With their variable tripping range, they can be optimally adj...

String circuit-breakers PKZ-SOL are the fuseless alternative for the protection of photovoltaic modules against short-circuit currents. With their variable tripping range, they can be optimally adj...

Motor-protective circuit-breaker according to IEC/EN60947, 3 pole size PKZM01, with adjustable overload and non-delayed short-circuit release, phase failure sensitive, screw and snap fitting, cap i...