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The SIEMENS 5SJ4104-7HG41 is a miniature circuit breaker (MCB) from the 5SJ4 series, designed to provide overcurrent and short-circuit protection in single-pole, 240-volt applications. This compact DIN-rail-mounted breaker is a standard component in residential and light commercial electrical panelboards, control panels, and distribution boards. Licensed electricians install this device as part of branch circuit protection systems where reliable, resettable overcurrent protection is required. The unit ships as a single device and weighs 0.377 pounds, making it straightforward to handle and position during panel assembly.
The 5SJ4104-7HG41 is suited for single-pole branch circuit protection in 240-volt systems, including residential electrical panels, commercial control enclosures, and industrial distribution boards. Its compact footprint allows installation in space-constrained panel layouts without sacrificing protection performance. This MCB is appropriate wherever a resettable, single-pole overcurrent device is needed in place of a one-time fuse.
Designed as an OEM-style single-pole miniature circuit breaker for use in DIN-rail-compatible electrical enclosures and distribution panels rated for 240-volt operation.
Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the panel and verify absence of voltage with a meter before installing or replacing any circuit breaker. Secure the breaker firmly onto the DIN rail and confirm all load and line conductors are properly terminated before re-energizing. Do not exceed the breaker rated voltage or attempt to use the device outside its intended single-pole configuration.
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