Square D QOU325 25A 240V 3-pole Miniature Circuit Breaker

Product Description

The SQUARE D QOU325 is a 3-pole miniature circuit breaker rated at 25 amps and 240 volts AC, designed for panel mount installation in commercial and residential electrical distribution systems. It provides overcurrent and short-circuit protection for branch circuits serving air conditioning, refrigeration, and heating equipment. The QOU325 uses box lug terminal connections and accepts wire sizes from 14 to 2 AWG, making it compatible with a range of conductor gauges common in HVAC and refrigeration branch circuit wiring. Licensed electricians install this breaker during new construction, panel upgrades, or equipment changeouts requiring a dedicated 3-pole circuit.

The QOU325 is suited for branch circuit protection in light commercial and residential applications where 3-pole, 240-volt overcurrent protection is required. Typical installations include dedicated circuits for packaged HVAC units, refrigeration compressors, and electric heating equipment. The breaker is panel mount style, fitting into compatible QOU-style load centers. It meets CSA, IEC, UL, and RoHS standards, making it appropriate for projects with strict compliance requirements.

Key Features

• 25-amp overcurrent protection on a 3-pole, 240-volt AC circuit
• Box lug terminal connections accommodate 14 to 2 AWG wire
• Panel mount design for installation in compatible QOU-style load centers
• Rated for air conditioning, refrigeration, and heating equipment circuits
• Certified to CSA, IEC, and UL standards; RoHS compliant

Compatibility

Designed for use with air conditioning and refrigeration equipment circuits and heating systems requiring 3-pole, 240-volt panel mount overcurrent protection in compatible QOU-style load centers.

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 the panel and verify absence of voltage before handling any breaker or wiring connections. Ensure conductor size falls within the rated 14 to 2 AWG range and that terminal connections are properly torqued per the load center manufacturer instructions. Do not exceed the breaker ampere rating for the connected load.