Siemens 5SY4103-7 Miniature Circuit Breaker

Product Description

The SIEMENS 5SY4103-7 is a miniature circuit breaker (MCB) designed to provide overcurrent and short-circuit protection in low-voltage electrical distribution systems. This compact breaker interrupts fault current automatically, protecting downstream wiring, equipment, and personnel. It is built for installation in residential, commercial, and light industrial panelboards and distribution enclosures. Licensed electricians and electrical contractors typically install and service this type of device as part of branch circuit protection work.

The 5SY4103-7 is suited for branch circuit and feeder protection applications where a compact DIN-rail-mounted breaker is required. Its small footprint makes it appropriate for use in tight enclosures and modular distribution boards. It is commonly specified in commercial fit-outs, industrial control panels, and residential sub-panel configurations requiring reliable overcurrent protection.

Key Features

• Automatic overcurrent and short-circuit interruption for branch circuit protection
• Compact DIN-rail mounting profile for use in modular distribution enclosures
• Lightweight construction at 0.27 pounds for easy handling and installation
• Low-profile dimensions suited for space-constrained panel applications
• UPC verified product: 75455487535

Compatibility

Designed as an OEM-style miniature circuit breaker for use in DIN-rail-compatible low-voltage distribution boards and modular panel enclosures.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the panel before installing or replacing any circuit breaker. Verify that the breaker rating is appropriate for the circuit load and conductor size before energizing. Do not exceed the rated current or interrupt capacity of the device.

Technical Specifications

• Weight: 0.27 pounds
• Length: 4 inches
• Width: 3 inches
• Height: 1 inch
• UPC: 75455487535

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 5SY4103-7