Siemens 5SY4540-8

The miniature circuit breaker features a 1P+N configuration with a current rating of 40 A and operates at a voltage of 230 V. It complies with UL1077 standards and is classified under IEC Mini Circuit Breakers.

With a trip characteristic class of D, this device is designed for environments requiring a high level of protection. It has a width of 36 mm and a depth of 70 mm, making it suitable for various installations.

This model is rated for a short-circuit breaking capacity of 10 kA at 230 V according to EN 60898 and 15 kA under IEC 60947-2 standards. Additionally, it operates effectively in ambient temperatures ranging from -40 °C to 70 °C, with a maximum relative humidity of 95% at 55 °C.

The unit is equipped with touch protection and features a DIN rail mounting method. It allows for the connection of solid-core conductors with a minimum cross section of 0.75 mm² and can accommodate various conductor sizes.

For further specifications, refer to the UL File E116386 in Vol. 1 Sec. 2.