Siemens 40 A SIRIUS Motor Protection Circuit Breaker, 20 → 690 V

The Siemens circuit breaker is designed for efficient motor protection, incorporating a thermal overload relay function that is suitable for various operational scenarios. Featuring a robust switching capacity of 100 kA, it ensures reliability and longevity, making it ideal for demanding applications. The device boasts a mechanical service life of approximately 25, 000 cycles, ensuring durability in high-use environments. Its compact design allows for easy installation on a DIN rail, offering flexibility in mounting options. With an operational current rated value of 40 A, this product is versatile enough to cater to a range of operational requirements while maintaining high safety standards.

Supports a wide installation altitude of up to 2, 000 metres
Facilitates easy maintenance thanks to its user-friendly design
Provides a significant breaking capacity for high short-circuit currents
Includes a finger-safe front protection class for added safety