Cam switch 25A, Three-phase reversing starter switch, base rail mounting front grey knob black SK25-5.8538\BS03

Three-phase reversing starter switch

This three-phase cam switch with a rated current of 25A is a robust solution for controlling electric motors. Designed for both professional and end-user applications, it provides reliable circuit switching with the ability to change the direction of rotation. The construction with a knob and gray housing, combined with a black knob, guarantees convenient operation and a clear position indicator.

Construction and application

The cam switch SK25-5.8538\BS03 is designed for mounting on a TH35 rail (DIN rail). Its housing made of plastic provides mechanical strength and resistance to environmental conditions – the IP65 protection rating guarantees protection against dust and water jets. This switch is used in motor controllers, electrical switchboards, and anywhere reliable switching of three-phase circuits with the ability to change the direction of rotation is required. The possibility of indirect mounting increases installation flexibility.

Key features and benefits

• Durability and reliability: Made of high-quality materials, it ensures long-lasting and trouble-free operation even in harsh conditions.
• Versatility: The ability to change the direction of rotation makes it an ideal solution for applications requiring precise motor control.
• Safety: IP65 protection protects against external factors, minimizing the risk of short circuits and failures.
• Easy installation: Designed for quick mounting on a TH35 rail, which significantly reduces installation time.
• Suitable for working in harsh conditions: A wide range of operating temperatures (-40°C to +70°C) allows it to be used in various industrial environments.
• High switching power: The rated operating power for AC-3 is 8 kW at 400V, allowing control of motors with significant power.
• Safe connection of wires: Screw connection of the main contacts ensures a secure and durable connection of wires with a cross-section of 4...10 mm².

Operating parameters

The continuous rated current (Iu) is 25A, making it suitable for most standard motor applications. The rated switching power in category AC-3 is 8 kW at 400V, and in category AC-23A it reaches even 11 kW at 400V. The construction without auxiliary contacts makes the switch simple to operate and reliable in operation. It has a "0" position, which allows for safe disconnection of the circuit. Mechanical endurance at 3 million switching cycles guarantees a long service life of the device.