Siemens 5SJ4104-7HG40 Circuit Breaker, 4A, 1-Pole, 240V

Meet the Siemens 5SJ4104-7HG40 circuit breaker — a purpose-built protective device designed for industrial electrical service, maintenance, and replacement projects. With a single pole and a 4 A rating at 240 V, this breaker provides targeted overcurrent protection for small- to mid-sized circuits within commercial or light industrial panels.

Key specifications at a glance:

• Part number: 5SJ4104-7HG40
• Amperage: 4 A
• Poles: 1-Pole
• Voltage rating: 240 V

Why choose a Siemens 5SJ4104-7HG40 for your project? Because it’s a genuine Siemens replacement designed to match the exact electrical characteristics of your existing panel, reducing installation risk and ensuring reliable protection for sensitive loads. This part is ideal when you need a precise, low-current protection device that fits in standard Siemens-compatible enclosures.

Use cases:

• Replacing a worn or tripped breaker in an industrial control panel, switchgear, or service panel
• Protecting low-amperage circuits such as sensors, relays, and small automation equipment
• As a ready-to-go spare part for maintenance crews and field technicians

Compatibility and installation notes:

• Verify fit by the exact part number (5SJ4104-7HG40) and by confirming your application requirements match (amperage, pole, and voltage).
• If you’re unsure about compatibility, our team can help confirm fit — just send us a message and we’ll assist with part-number matching and recommendations.

Practical considerations:

• Choosing the correct amperage rating helps protect equipment without nuisance trips, balancing safety and uptime.
• Use in environments that require reliable, Siemens-manufactured protection for critical processes.