
Siemens
- Available:
- 0 pcs.On RequestUpdated at: 05-09-2026
- Offer from:
Trusted supplier — Italy, member since 2021, 10–19 employees
- Warranty:
- 12 months
Meet global industrial automation leaders at ANEXPO 2027| Learn More
Need more information?
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.

Siemens
Register now to explore 36 mln offers from verified suppliers worldwide.
Datasheet for Siemens 5SY4540-8, including specifications and features.
3D CAD model and technical drawings, ready for your design software.

Get real-time analytics and market data to optimize your purchasing decisions for this component and similar products