SQUARE D
SQUARE D QOB160 Miniature Circuit Breaker 60A 1 Pole 120/240V AC
A 60 A single-pole breaker rated 120/240 V AC with 10 kA interrupting capacity for QO load centres
- 60 A single-pole protection for 120/240 V AC circuits
- 10 kA interrupting rating handles high fault currents
- Bolt-on mounting fits Square D QO load centres
- 48 V DC rating adds low-voltage versatility
- Compact 3.1 × 0.8 × 2.9 in frame saves panel space
What This Breaker Is and Who Uses It
The SQUARE D QOB160 is a miniature circuit breaker rated at 60 amps for single-phase 120/240V AC systems. It fits QO series panelboards and NQOD load centres with a bolt-on mounting style. The paddle actuator provides clear on-off indication. It is suited for electricians and facility managers protecting branch circuits in commercial or light-industrial panels.
What the Specifications Mean for Installation
A 10kA interrupting rating at 120/240V AC handles typical fault currents in these panels. The breaker also carries a 48V DC rating for limited low-voltage use. Lug terminals accept standard copper conductors. The 100A frame size determines the physical envelope and bus compatibility within the QO series.
What to Verify Before Ordering
Confirm the panelboard is a Square D QO or NQOD model that accepts bolt-on QOB breakers. Ensure the available slot matches the 3.1 inch length, 0.8 inch width and 2.9 inch depth. Verify the circuit requires a single-pole 60A device and that the ambient temperature at the panel meets the 77 degree F minimum operating specification.
Highlights
- 60 A single-pole protection for 120/240 V AC circuits
- 10 kA interrupting rating handles high fault currents
- Bolt-on mounting fits Square D QO load centres
- 48 V DC rating adds low-voltage versatility
- Compact 3.1 × 0.8 × 2.9 in frame saves panel space
Specifications
| Brand | SQUARE D |
|---|
Questions about this item
Will the bolt-on lug terminals need re-torquing after installation?
Bolt-on lug terminals should be torqued to spec during installation and inspected periodically; no scheduled replacement interval is defined for the breaker itself.
At what current does the 10 kA interrupting rating limit protection?
The breaker interrupts faults up to 10 kA at 120/240 V AC; sustained loads must stay at or below the 60 A rating.
How warm does the 3.1 in frame get during continuous 60 A operation?
The 100 A frame size and bolt-on mounting dissipate heat into the panelboard; ambient temperature should not exceed 77 °F for rated performance.
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