Siemens 5SJ4101-7HG40 Mcb 1 Pole 240V

Product Description

The SIEMENS 5SJ4101-7HG40 is a 1-pole miniature circuit breaker (MCB) from the 5SJ4 series, rated for 240 volts. It provides overcurrent and short-circuit protection for branch circuits in residential, commercial, and light industrial electrical systems. Licensed electricians install this device in distribution boards and load centers where DIN-rail mounting is required. The compact single-pole design and 240-volt rating make it a direct-fit choice for standard panel configurations requiring reliable thermal-magnetic trip protection.

This MCB is suited for single-pole branch circuit protection in applications such as lighting circuits, small motor loads, and general-purpose receptacle circuits. It is designed for use in DIN-rail-mounted enclosures and distribution panels operating at 240 volts. The 5SJ4 series is a widely deployed product line in both residential and light commercial electrical installations where space-efficient, modular circuit protection is required.

Key Features

• 1-pole configuration for single-phase branch circuit protection
• 240-volt rating suitable for standard North American and international panel voltages
• Thermal-magnetic trip mechanism provides both overload and short-circuit protection
• DIN-rail mount design for modular installation in distribution enclosures
• Compact footprint: 3.661 inches long x 0.827 inches wide x 3.268 inches tall

Compatibility

Designed as an OEM-style replacement or new-installation MCB for DIN-rail-mounted distribution panels and load centers rated at 240 volts accepting 5SJ4 series miniature circuit breakers.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize the panel and verify absence of voltage with a meter before handling or installing the breaker. Snap the unit firmly onto a compatible DIN rail and ensure all load and line conductors are torqued to panel manufacturer specifications. Do not install in a panel with live busbars or energized conductors.