Siemens 5SJ4106-7HG42 - Miniature Circuit Breaker (MCB)

Siemens 5SJ4106-7HG42 Miniature Circuit Breaker (MCB) is a compact, dependable overcurrent protector designed to perform in demanding electrical environments. Built by Siemens, this MCB delivers fast, predictable disconnection in the event of overloads or short circuits, safeguarding wiring, devices, and operators from damage and downtime. Where it shines

• Panel-level protection for panelboards, switchboards, and control panels—easy integration into new builds or retrofit projects.
• OEM equipment protection—the reliable component you can trust in controllers, machines, and automation gear.
• Ideal for industrial, commercial, and OEM applications that require steady, safe operation in distribution panels and motor control centers.

Why choose this Siemens MCB

• Trusted Siemens engineering and seamless integration within the Siemens ecosystem for easier sourcing, testing, and maintenance.
• Clear, decisive disconnection during overcurrent events to minimize risk to downstream circuits and components.
• Designed for dependable performance in demanding systems, delivering reliable protection for critical electrical infrastructure.

Practical use cases

Whether you’re a panel builder, automation technician, or facility manager, the 5SJ4106-7HG42 helps you maintain uptime in:

• Factory automation lines with motor drives and control logic
• Commercial electrical distribution within service panels and switchgear
• OEM enclosures in equipment racks and control cabinets

Customer guidance

When selecting an MCB, ensure the current rating and trip characteristics align with your circuit and enclosure specifications. For detailed electrical ratings and installation guidelines, consult the official Siemens datasheet for 5SJ4106-7HG42.