Square D QOB250H 2 Pole Bolt-on Circuit Breaker 50A 240V

Product Description

The SQUARE D QOB250H is a 2-pole, bolt-on miniature circuit breaker rated for 50 amps at 240 volts AC. It provides overcurrent and short-circuit protection for branch circuits in residential and light commercial electrical panels. The bolt-on mounting design secures the breaker directly to the bus bar, maintaining a firm connection under fault conditions. Box lug terminals accept wire in the 8 AWG to 2 AWG range. Licensed electricians install this breaker as part of panel upgrades, circuit additions, or direct breaker replacements.

This breaker is suited for 240-volt, 2-pole branch circuit applications such as HVAC equipment, water heaters, electric ranges, dryers, and similar double-pole loads. The bolt-on design is commonly specified in load centers and distribution panels where positive bus contact is required. Its compact footprint fits within standard panelboard configurations designed for QOB-series breakers.

Key Features

• 50-amp continuous current rating for 240-volt, 2-pole circuits
• Bolt-on mounting for secure bus bar contact
• Box lug terminal connection type accommodates 8 AWG to 2 AWG conductors
• Miniature circuit breaker form factor for space-efficient panel installation
• Provides overcurrent and short-circuit protection per NEC requirements

Compatibility

Designed as an OEM-style replacement bolt-on miniature circuit breaker for load centers and panelboards that accept QOB-series breakers.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the panel and verify the absence of voltage with a calibrated meter before handling any breaker or wiring. Ensure conductor size is within the rated terminal range before torquing lugs. Do not install this breaker in a panel that does not accept bolt-on QOB-series breakers.