Siemens 5SJ4203-7HG42 Circuit Breaker, 3A, 2-Pole

The Siemens 5SJ4203-7HG42 circuit breaker is engineered for industrial electrical service, maintenance, and replacement projects. With a 3 A rating and a 2-pole configuration, this genuine Siemens part delivers dependable protection while enabling safe, full isolation of circuits during service or fault conditions.

• 2-pole configuration provides simultaneous disconnection of both conductors, improving safety during maintenance and service tasks.
• 3 A trip rating is well-suited for low-current control circuits and auxiliary loads in industrial environments, helping prevent nuisance trips while protecting wiring and devices.
• Genuine Siemens component with the part number 5SJ4203-7HG42 ensures compatibility within the Siemens ecosystem and aligns with existing 5SJ-series breakers. Always verify fit by part number and application requirements.
• Ideal for replacement projects when upgrading or repairing panels that rely on Siemens protection devices, ensuring consistent performance and electrical coordination.
• Clear compatibility guidance If you’re unsure about fit, we can help verify compatibility based on your equipment and application requirements—just share the part number and context.

Compatibility and verification are straightforward: confirm the exact part number 5SJ4203-7HG42 and compare it to your equipment’s documentation or enclosure labeling. This ensures the breaker matches the intended amp rating, pole arrangement, and application needs for safe operation.

Who this is for: technicians and procurement teams responsible for industrial electrical service, maintenance, and replacement in facilities that rely on Siemens protection devices. This unit is a practical, reliable option when a 2-pole, 3 A breaker is required to protect circuits while allowing safe disconnection for servicing.

Why choose Siemens for this application? The 5SJ4203-7HG42 leverages Siemens’ established track record in electrical protection, offering a robust, purpose-built solution for industrial environments that demand consistent performance and straightforward compatibility with existing Siemens panels and accessories.