Square D QO240C 40A Double Pole Circuit Breaker 240V

Product Description

The Square D QO240C is a 40-amp, double-pole circuit breaker rated for 240 volts, designed for use in QO-style residential and light commercial load centers. It provides overcurrent protection for 240-volt branch circuits, interrupting the circuit automatically when a fault or overload condition is detected. The breaker ships in a recloseable clamshell package in a quantity of three units. Licensed electricians install this type of breaker as part of panel upgrades, new circuit additions, or direct replacement of failed breakers in compatible load centers.

This breaker is suited for residential and light commercial electrical systems where 240-volt double-pole protection is required. Typical applications include branch circuits serving appliances such as dryers, ranges, HVAC equipment, water heaters, and similar 240-volt loads. The double-pole configuration interrupts both hot legs of the circuit simultaneously, which is required for proper protection of 240-volt branch circuits under NEC guidelines.

Key Features

• 40-amp double-pole configuration for 240-volt branch circuit protection
• Simultaneous interruption of both hot legs on overload or fault
• Recloseable clamshell packaging included
• Sold in a package quantity of three units
• Designed for QO-style load center installations

Compatibility

Designed as an OEM-style replacement for QO-series residential and light commercial load centers requiring a 40-amp double-pole circuit breaker.

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 the main breaker is off before handling any breaker or bus bar connection. Confirm the load center is compatible with QO-series breakers before installation. Do not exceed the breaker ampacity for the connected circuit conductors.