Siemens SENTRON Miniature Circuit Breaker, 4-Pole, 40A, Type B, 400V AC, 72V DC, 10 kA Breaking Capacity 5SY4440-6

Siemens 5SY4440-6 SENTRON Miniature Circuit Breaker is a 4-pole device designed for automatic cut-out protection in electrical installations. It operates at a rated current of 40A, with Type B tripping characteristic providing sensitive overload protection suited for use in industrial, commercial, and residential sectors. The breaker supports a rated voltage of 400V AC and 72V DC and has a breaking capacity of 10 kA, enabling safe interruption under short-circuit conditions.

The product features a DIN rail mounting system allowing for fast and convenient assembly and removal. Screw terminal connections provide secure and reliable wiring. Its compact form factor of 90mm height, 76mm width, and 90mm depth ensures efficient use of panel space. An IP20 rating offers basic protection against solid foreign objects.

This miniature circuit breaker complies with international standards IEC/EN 60898-1 and IEC/EN 60947-2 and UL1077 approvals, ensuring reliable and safe operation. The toggle switch actuator enables quick manual reset. Manufactured in Germany, the device promises high quality and extended product life under Siemens' Better World sustainability initiative.

Typical applications include industrial machinery protection, distribution boards in residential and commercial buildings, and safeguarding circuits with generators, long cables, transformers, and motors. Its Type B characteristic is suitable for general use circuits with low surge currents.

Features a 4-pole configuration for balanced circuit protection. Rated current is 40 amperes for medium power circuits. Equipped with Type B tripping characteristic for sensitive overload protection. Rated voltage of 400V AC and 72V DC for versatility.

Breaking capacity of 10 kA ensures safe interruption of fault currents. DIN rail mountable for quick and convenient installation. Constructed with screw terminal connections for secure wiring. Compact dimensions with height, width and depth all 90mm or less.

IP20 rated for protection against solid objects. Complies with IEC/EN 60898-1, IEC/EN 60947-2, and UL1077 standards. Explore Siemens products and Miniature Circuit Breakers in the Electronics & Electricals category on EnvMart for quality and safety.