Siemens 5SY4202-7 Miniature Circuit Breaker 2A 400V 2-Pole

The Siemens 5SY4202-7 is a high-quality 2-pole miniature circuit breaker engineered to provide robust protection for electrical circuits against overloads and short circuits. Designed for precision and reliability, this device operates at a rated current of 2 A and a voltage of 400 V, making it a dependable component for maintaining electrical safety in various environments. Its construction reflects German engineering standards, ensuring long-term durability and consistent performance in demanding electrical systems.

Advantages

This miniature circuit breaker offers exceptional reliability due to its high-quality manufacturing standards. The 2-pole design allows for the simultaneous disconnection of both phases, enhancing safety during maintenance or fault conditions. Its compact design and standardized mounting dimensions facilitate easy integration into existing distribution boards, while the robust internal mechanism ensures a long service life even under frequent switching operations.

Suitable for

• Residential electrical distribution boards
• Industrial control panels
• Protection of low-current control circuits
• Commercial building electrical infrastructure

This device may not be suitable for high-current applications exceeding its 2 A rating, as it will trigger a trip. It is also not designed for outdoor environments without an additional protective enclosure, as the IP20 rating indicates it is not protected against water ingress or dust accumulation.

Key specifications

• Rated current: 2 A
• Operating voltage: 400 V
• Number of poles: 2
• Tripping characteristic: C
• Breaking capacity: 10 kA
• Mounting depth: 70 mm
• Protection rating: IP20

Installation should be performed by a qualified electrician in accordance with local electrical codes. The device is mounted onto a standard DIN rail within a distribution cabinet. Ensure that the supply voltage and load requirements match the specifications of the breaker before connecting the cables to the terminals. Once installed, the toggle switch can be used to manually open or close the circuit.

What to consider before purchase

• Verify that the 2 A rated current is appropriate for your specific load requirements
• Ensure the 400 V voltage rating matches your electrical system
• Check that the 70 mm mounting depth fits your existing distribution board enclosure
• Confirm that the C-type tripping characteristic is suitable for your specific application

For optimal performance and safety, ensure all terminal connections are tightened to the manufacturer's specified torque settings and periodically inspect the device for signs of wear or thermal damage.