Square D QOB120HID 1 Pole Miniature Circuit Breaker 20A

Product Description

The SQUARE D QOB120HID is a 1-pole miniature circuit breaker rated at 20 amps and 240 VAC, designed for bolt-on installation in compatible panelboards. It provides overcurrent and short-circuit protection for branch circuits in commercial and light industrial electrical distribution systems. The pressure plate terminal connection accommodates wire sizes from 14 to 8 AWG, making it suitable for a range of standard branch circuit conductors. At 0.28 pounds and compact dimensions, this breaker slots directly into the panelboard bus without adapters or additional hardware. Installation and service are performed by licensed electricians working to NEC requirements.

The QOB120HID is specified for use with Square D NQOD panelboards. This makes it a direct replacement or new-installation breaker for commercial panelboards in office buildings, retail spaces, light industrial facilities, and multi-unit residential service equipment where NQOD-style panelboards are present. The bolt-on mount type ensures a secure, vibration-resistant connection to the bus bar, which is particularly important in commercial environments subject to mechanical stress or high-cycle switching loads.

Key Features

• 20-amp overcurrent protection at 240 VAC for branch circuit applications
• Bolt-on mount provides secure, vibration-resistant bus bar connection
• Pressure plate terminals accept 14-8 AWG wire for flexible conductor sizing
• Single-pole configuration for 120V or 240V single-phase branch circuits
• UL Listed and CSA certified; RoHS compliant
• Compact form factor fits directly into Square D NQOD panelboard slots

Compatibility

Designed for use with Square D NQOD panelboards as stated by the manufacturer.

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 panelboard before removing or installing any circuit breaker. Verify that conductor wire gauge falls within the 14-8 AWG range supported by the pressure plate terminals before terminating. Do not exceed the breaker's 20-amp or 240 VAC ratings.