Siemens 5SJ4301-7HG41 - 1A, 3-Pole, Miniature Circuit Breaker (MCB)

Meet the Siemens 5SJ4301-7HG41 — a precise 1A, 3-Pole miniature circuit breaker (MCB) designed to deliver dependable overcurrent protection where it matters most. Built for three-phase systems, this compact device provides streamlined protection across all three conductors, making it ideal for panelboards, switchboards, and control panels in busy industrial environments.

Key specifications

• Current rating: 1A
• Poles: 3-Pole
• Breaker type: Miniature Circuit Breaker (MCB)

Why this matters

• Three-phase protection in one unit: The 3-Pole design guards all phases with a single device, reducing wiring complexity and simplifying panel layouts.
• Reliable overcurrent protection: Engineered to interrupt fault currents quickly, helping to safeguard motors, control circuits, and downstream equipment from damage and downtime.
• Versatile for multiple environments: Suitable for industrial, commercial, and OEM applications where safe, consistent protection in distribution panels and motor control centers is critical.

Ideal use cases

Use in panelboards, switchboards, and control panels requiring compact, dependable three-phase protection. Perfect for automation racks, manufacturing lines, and other setups where a single MCB must reliably guard all three phases.

Practical guidance

• Installation: Designed to integrate with standard three-phase distribution schemes; ensure proper termination and secure mounting within compatible enclosures.
• Maintenance: Regularly verify the device is securely seated and that conductors are clean and tightened to maintain optimal protection performance.