Siemens 5SJ4225-7HG41 - 25A, 240VAC / 125VDC, 2-Pole, Miniature Circuit Breaker (MCB)

Meet the Siemens 5SJ4225-7HG41 Miniature Circuit Breaker (MCB), a compact yet robust solution designed to safeguard electrical distribution in panelboards, switchboards, and control panels. With a 25A rating and versatile voltage capability, this 2-pole MCB delivers dependable overcurrent protection for both AC and DC circuits in industrial, commercial, and OEM applications.

• Model: Siemens 5SJ4225-7HG41
• Current rating: 25 A
• Voltage rating: 240 VAC / 125 VDC
• Poles: 2-Pole
• Breaker type: Miniature Circuit Breaker (MCB)
• Applications: Suitable for panelboards, switchboards, and control panels; ideal for motor control centers and distribution gear

Why this MCB stands out

• Dual voltage versatility—protects both AC and DC circuits thanks to the 240 VAC / 125 VDC rating, simplifying cross-domain protection in mixed installations.
• 2-Pole configuration provides coordinated protection and a compact footprint, making it easy to integrate into dense panel layouts and multi-pole protective schemes.
• Reliability you can trust—engineered by Siemens for consistent performance in demanding environments where dependable operation matters most.

Practical use cases and scenarios

• Installing in new or retrofit panelboards and switchboards that require precise overcurrent protection for both AC and DC circuits.
• Motor control centers and control panels where compact 2-pole protection improves space utilization without sacrificing safety.
• OEM equipment builds that demand a rugged, ready-to-install MCB with clear current and voltage specifications.

What problems this solves

• Prevents damage from overcurrent events by quickly interrupting fault currents, protecting wiring, components, and downstream devices.
• Reduces downtime and maintenance headaches with a dependable, easy-to-source protective device that aligns with standard Siemens panel configurations.
• Supports mixed-voltage installations, eliminating the need for separate protection strategies for AC and DC sections.

Tips for optimal use

• Verify that the circuit load does not exceed 25 A and that the connected circuits comply with the rated voltage (240 VAC or 125 VDC).
• Ensure proper alignment and seating within compatible Siemens panelboards or switchboards designed for 2-pole MCBs.
• Use as part of a broader protection strategy that includes upstream fusing or safeguarding devices as required by local codes and standards.

In summary, the Siemens 5SJ4225-7HG41 is a purpose-built, dual-voltage, 2-pole miniature circuit breaker that delivers reliable overcurrent protection for a wide range of industrial, commercial, and OEM applications. Its precise specifications and trusted Siemens lineage help you build safer, more resilient electrical distribution systems.