Cooper Bussmann BP/MB-15 Circuit Breaker 15A 125V

Product Description

The COOPER BUSSMANN BP/MB-15 is an Edison base plug fuse circuit breaker rated at 15 amps and 125 volts. It installs into standard Edison base fuse sockets and functions as a resettable overcurrent protection device, replacing single-use plug fuses in residential and light commercial panelboards and fuse boxes. Licensed electricians and qualified electrical contractors install this type of device when converting a fused panel position to a resettable breaker format without replacing the enclosure. The carded retail packaging makes it suitable for both shop stock and field carry.

This breaker is used in residential fuse panels, older light commercial distribution equipment, and retrofit applications where Edison base fuse sockets are already present. It is a common replacement in older homes and buildings that retain fused electrical panels rather than modern breaker panels. A package quantity of 5 units supports service calls requiring multiple positions to be converted or replaced in a single visit.

Key Features

• Resettable circuit breaker in an Edison base plug fuse form factor — no fuse replacement required after a trip
• Rated 15 amps at 125 volts for standard branch circuit protection
• Fits standard Edison base fuse sockets without modification
• Carded packaging, 5 units per package for efficient field stocking
• Compact footprint: 5.5 inches long, 2.75 inches wide, 1.25 inches tall

Compatibility

Designed as an OEM-style replacement for residential and light commercial Edison base plug fuse sockets rated for 15-amp, 125-volt branch circuits.

Installation Notes

Installation must be performed by a licensed electrician in accordance with applicable NEC requirements. Always shut off the main disconnect and verify the circuit is de-energized before removing an existing fuse or inserting the breaker. Confirm the socket and panel are rated for 125 volts before installation. Do not install in panels or sockets rated above the breaker voltage rating.