Square D QOB3601021 60A 240V 3-pole Bolt-on Circuit Breaker

Product Description

The SQUARE D QOB3601021 is a 3-pole, bolt-on miniature circuit breaker rated at 60 amps and 240 volts AC. It provides overcurrent and short-circuit protection in panelboards and load centers where a bolt-on mounting style is required. Box lug terminals accept wire sizes from 8 to 2 AWG, making it suitable for branch circuit and feeder applications in both residential and light commercial electrical systems. Licensed electricians install this breaker as part of panel upgrades, new construction wiring, or replacement of failed protective devices.

This breaker is designed for use with shunt trip accessories rated at 120, 208, or 240 VAC, expanding its use in systems requiring remote trip capability. Its 3-pole configuration makes it appropriate for three-phase and multi-wire branch circuits in commercial panelboards and subpanels. The bolt-on mount provides a secure, vibration-resistant connection to the bus bar, which is important in mechanical rooms and industrial-adjacent environments subject to movement or vibration.

Key Features

• 60-amp continuous current rating at 240 volts AC
• 3-pole design for three-phase or multi-wire branch circuit protection
• Bolt-on mount for secure, vibration-resistant bus bar connection
• Box lug terminals accept 8 to 2 AWG wire
• Compatible with shunt trip accessories at 120, 208, or 240 VAC for remote trip operation
• UL Listed, CSA certified, and RoHS compliant

Compatibility

For use with shunt trip accessories rated at 120/208/240 VAC. Verify panelboard compatibility with the QOB breaker series before installation.

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 panelboard and verify the absence of voltage with a calibrated meter before handling any bus bar or wiring connections. Ensure wire size and insulation rating are appropriate for the circuit load and conduit fill requirements. Do not exceed the terminal torque specifications listed on the breaker label or in the manufacturer documentation.