Siemens SENTRON 5SY8 MCB, 4P, 40A Curve D, 400V AC, 72V DC, 25 kA Breaking Capacity

The Siemens Miniature Circuit Breaker is an essential component designed for reliable protection in electrical systems. Suitable for infrastructure and industrial applications, this device stands out with its only magnetic tripping operation, ensuring swift disconnection in case of fault conditions. With a compact design that integrates effortlessly into electrical panels, it features a robust build quality that guarantees a long mechanical service life. Furthermore, it operates efficiently at a voltage of up to 400 V and is engineered to handle high short-circuit currents of up to 25 kA. Its advanced technical specifications combine safety, functionality, and ease of installation to meet diverse electrical needs. Designed to resist environmental challenges, it ensures continued performance in demanding conditions, making it a trustworthy choice for professionals in the field.

Compact size facilitates easy integration into tight spaces
Designed for a mechanical service life of up to 10000 cycles
Rated for use in overvoltage category III applications
Environmentally friendly construction featuring halogen-free and silicon-free materials
Compatible with both solid and stranded conductors enhancing installation versatility
Offers touch protection for enhanced user safety
Tested for vibration resistance ensuring durability in challenging environments
Allows installation of supplementary devices enhancing functionality