Schneider Electric QOB1151021 Circuit Breaker 15A 1P

Product Description

The SCHNEIDER ELECTRIC QOB1151021 is a single-pole, bolt-on miniature circuit breaker rated for 15 amps at 120/240 VAC (50/60 Hz) and 48 VDC. It uses thermal-magnetic tripping technology to protect branch circuits in NQ Series panelboards against overcurrent and short-circuit faults. The breaker includes a Visi-Trip indicator that visually flags a tripped condition, making it straightforward for electricians to identify a fault during panel inspection. A shunt trip accessory (120/208/240 VAC) is included. The compact Q-frame body measures 0.75 inches wide, keeping single-pole installations space-efficient in high-density panels. Interrupting rating is 10 kiloamperes (kA) at 120/240 VAC and 5 kA at 48 VDC. Approved by UL and CSA.

The QOB1151021 is suited for branch circuit protection in residential and light commercial applications including appliance and lighting circuits. It installs via bolt-on mounting in NQ Series panelboards. The 15-amp rating and single-pole configuration make it a standard choice for 120-volt branch circuits in commercial distribution panels where NQ-style hardware is already in service. The breaker accepts 14 to 8 AWG aluminum or copper conductors, or two 14 to 10 AWG copper conductors, covering a wide range of wire gauge combinations encountered in the field.

Key Features

• Thermal-magnetic trip mechanism provides both overload and short-circuit protection
• Visi-Trip indicator gives a clear visual signal when the breaker has tripped
• Includes 120/208/240 VAC shunt trip for remote disconnect capability
• Compact 0.75-inch wide body minimizes footprint in single-pole slots
• Accepts aluminum or copper conductors from 14 to 8 AWG
• UL and CSA listed; RoHS/REACH compliant

Compatibility

Designed for bolt-on installation in Square D NQ Series panelboards.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the panelboard before removing or installing any circuit breaker. Verify that conductor size and material are within the breaker's listed wire range before terminating. Do not exceed the panelboard's rated bus ampacity when adding branch breakers.