SQUARE D
SQUARE D QOB120HID Miniature Circuit Breaker 20A 1 Pole 120/240V
Protects high-intensity discharge lighting circuits at 20 A with a 10 kA interrupting rating, bolting into Square D QO load centres
- 20 A rating protects lighting circuits
- High-intensity discharge design handles lamp inrush
- 10 kA interrupting capacity clears faults safely
- Bolt-on mounting fits QO load centres
- 48 V DC rating adds low-voltage versatility
QOB Series 20 A Breaker
The Square D QOB120HID is a single-pole miniature circuit breaker rated at 20 amps for 120/240 V AC and 48 V DC systems. It mounts by bolting onto compatible QO-series panelboards and load centres. The paddle actuator provides clear on/off indication. This breaker suits residential and light-commercial panels that require a bolt-on format.
High-Intensity Discharge Rating
The HID designation means the breaker is tested for the high inrush currents of HID lighting circuits without nuisance tripping. It carries a 10 kA interrupting rating at 120/240 V AC, providing adequate short-circuit protection for typical branch circuits. The 100 A frame size sets the physical envelope, but the 20 A trip unit limits continuous load to that value. Circuits with sustained loads above 20 A or fault currents exceeding 10 kA need a different device.
Bolt-On QO Compatibility
The breaker installs only in Square D NQOD panelboards and QO-series load centres that accept bolt-on QOB frames. The pressure-plate terminals accept standard copper conductors. Builders using plug-on QO panels or other manufacturers' enclosures cannot use this unit. Verify the panelboard series before purchase.
Highlights
- 20 A rating protects lighting circuits
- High-intensity discharge design handles lamp inrush
- 10 kA interrupting capacity clears faults safely
- Bolt-on mounting fits QO load centres
- 48 V DC rating adds low-voltage versatility
Specifications
| Brand | SQUARE D |
|---|
Questions about this item
Will this 20 A QOB breaker bolt onto my existing QO-series panelboard?
Yes, it mounts bolt-on and is compatible with Square D QO and NQOD panelboards.
How can I verify the breaker is operating correctly once installed?
The paddle actuator provides clear on/off/trip positions; a successful reset after a fault confirms proper operation.
Does the package include mounting hardware or terminal lugs?
The breaker uses pressure-plate terminals and bolt-on mounting; hardware and lugs are supplied with the panelboard, not the breaker.
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