Siemens SWITCH 3+N-POL 40A

The Siemens SWITCH 3+N-POL 40A is a high-quality modular switching device designed for reliable control of electrical systems within distribution boards and control cabinets. Engineered for DIN-rail mounting, this component is part of the robust SENTRON series, ensuring seamless integration into professional electrical installations. It provides a dependable solution for switching small loads on or off, making it an essential element for both infrastructure and industrial electrical setups.

Advantages

This switching device offers significant benefits, including a user-friendly mounting and connection process that simplifies installation for professionals. Its standardized design allows for the easy addition of accessories, ensuring flexibility as system requirements evolve. The device is built with an integrated design philosophy that saves space on standard mounting rails while maintaining high safety standards. Furthermore, it features optimized touch protection and reach-around safety, providing peace of mind during both installation and daily operation.

Suitable for

• Control cabinets and electrical distribution boards
• Switching small electrical loads
• Infrastructure and industrial electrical installations
• Systems requiring manual switching control

When it may not be suitable

This device is intended for switching small loads and is not designed for high-power industrial motor starting or heavy-duty circuit protection applications. It should not be used as a substitute for a dedicated circuit breaker or residual current device where specific protection against overcurrent or earth faults is required.

Key specifications

• Rated current: 40 A
• Number of poles: 3+N
• Voltage rating: 400 V
• Mounting type: Standard DIN-rail
• Device series: SENTRON

How to use

The device is designed for quick and secure installation onto a standard DIN-rail within a distribution board. Ensure the power supply is disconnected before mounting or wiring the unit. Connect the incoming and outgoing conductors to the appropriate terminals, ensuring that all connections are tightened to the manufacturer's specified torque. Once installed, the switch can be operated manually to control the connected load. Always verify that the wiring matches the system diagram before energizing the circuit.

What to consider before purchase

• Verify that the 40A rating is sufficient for your specific load requirements.
• Ensure the 3+N pole configuration matches your circuit design.
• Confirm that your distribution board has sufficient space on the DIN-rail.
• Check compatibility with any additional remote control accessories you may intend to use.

Usage recommendations

Always ensure that the installation is performed by a qualified electrician in accordance with local electrical regulations and safety standards. Regularly inspect the terminals for tightness to maintain optimal performance and safety.