The Siemens circuit breaker size S3 is engineered for optimal performance in starter combinations, ensuring reliable protection and control for your electrical systems. Designed with advanced functionalities, it supports a rated current of 75 A with an impressive short-circuit breaking capacity of up to 100 kA, providing robust defence against electrical faults. The auxiliary switch and enhanced operation range from -20 to +60 °C make it adaptable to diverse environments. With a proven mechanical service life of 25, 000 operating cycles, this circuit breaker demonstrates durability and efficiency, essential for industrial applications. The compact design allows for versatile installation while meeting strict safety standards, making it an ideal choice for those looking for dependability in their electrical systems.

Compact size maximises space efficiency in control panels
Designed for flexibility with wide operating voltage range
Enhanced thermal overload release protects against damage
Robust mechanical and electrical endurance guarantees reliability