Cam switch 40A, Disconnector 0-1 (3-pole), base mounting rail front closure black SK40-2.8211\BS07

Cam Switch – Reliable Circuit Disconnection

This three-pole cam switch with a rated current of 40A is a robust solution for switching electrical circuits on and off. Designed for both professional and domestic applications, it provides safe and convenient operation. Model SK40-2.8211\BS07, manufactured by Spamel, is characterized by high quality workmanship and durability.

Construction and Application

The cam switch is designed for mounting on a DIN rail (TS35) with a closable front, which increases safety and protects against accidental contact with conductive elements. The construction allows for easy installation and integration with existing electrical systems. Thanks to the ability to change the knob position, the device can function as a disconnector (0-1 position) or a switch in more complex installations. It will be useful in circuits of low-voltage electrical installations, as a switch, disconnector or control switch.

Key Features and Benefits

• High mechanical resistance: Durable construction ensures long-lasting and trouble-free operation even in harsh conditions.
• Safety of use: IP65 protection rating guarantees protection against dust and water jets, which is particularly important in humid environments.
• Universal mounting: Possibility of mounting on a DIN rail facilitates integration with existing electrical systems.
• Adapted to work in a wide temperature range: The device retains its properties in the range of -40°C to +70°C, allowing it to be used in various climatic conditions.
• High rated power: The rated power for AC-3 is 12 kW at 400V, making it suitable for powering various electrical devices.
• Resistance to external factors: Meets the requirements of PN-EN 60947-3 and IEC 60947-3, which confirms its high quality and safety. Additionally resistant to vibrations, shocks and atmospheric factors (salt mist).
• Solid connections: Type of connection of the main contacts – screw connection – ensures a secure and durable connection of wires.

Technical Parameters in Practice

The rated continuous current at 40A allows for safe power supply to devices with significant power consumption. The lack of auxiliary contacts (normally open and normally closed) simplifies the design and reduces the cost of the device, while fulfilling the basic functions of a disconnector. The housing material – plastic – provides electrical insulation and corrosion resistance. The inability to return to the 0 position increases the certainty of the device's operation in critical situations.