1SYS274022R0201

The ABB SB204M I-D20 is a four-pole miniature circuit breaker designed to provide overload and short-circuit protection in low-voltage electrical installations. It has a rated current of 20 A and a D-type tripping characteristic. The breaker uses a thermal tripping mechanism for overload protection and an electromagnetic tripping mechanism for short-circuit protection. It is suitable for compatible industrial and electrical distribution applications where the circuit's operating characteristics require a D-curve breaker. Installation must comply with the manufacturer's requirements and applicable electrical standards, with suitable conductor sizing and fault-current coordination.