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White rectangular miniature circuit breaker with black toggle actuator and slotted box lug terminals

SQUARE D

SQUARE D QOU115HM Circuit Breaker 15A 1 Pole 120/240V

SKU CH-63F4-FDV46

Miniature circuit breaker rated 15 A with high-magnetic trip for air-conditioning and refrigeration loads, single-pole 120/240 V AC, 48 V DC, 10 kA interrupting.

  • High magnetic trip protects A/C and refrigeration motors
  • 15 A single-pole rating fits standard 120/240 V panels
  • 10 kA interrupting capacity clears faults safely
  • Reversible slotted box lug speeds wiring on line or load
  • DIN-rail or surface mount suits QO load centres

15 A QOU Miniature Breaker

This Square D QOU miniature circuit breaker carries a 15 A rating on a single pole. It protects 120/240 V AC branch circuits and is rated for 48 V DC as well. The high-magnetic trip curve suits air-conditioning, refrigeration and heating loads where inrush current is common.

QO Panelboard Upgrade

The breaker mounts on a DIN rail or surface and fits QO-series panelboards or load centres. Its reversible slotted box lug accepts line or load conductors without re-wiring the terminal orientation. A 10 kA interrupting rating at 120/240 V AC replaces lower-rated devices when higher fault-current protection is required.

Build Integration

The toggle actuator provides clear on/off indication for maintenance crews. The 100 A frame size leaves space in the same panel for additional single-pole breakers. Installers needing multi-pole or higher-amperage protection must select a different QOU model.

Highlights

  • High magnetic trip protects A/C and refrigeration motors
  • 15 A single-pole rating fits standard 120/240 V panels
  • 10 kA interrupting capacity clears faults safely
  • Reversible slotted box lug speeds wiring on line or load
  • DIN-rail or surface mount suits QO load centres

Specifications

BrandSQUARE D

Questions about this item

Does the 15 A QOU115HM fit a standard QO load center?

Yes, it is built for the QO panelboard series and mounts on a DIN rail or surface mount within that system.

How do I install the breaker and what step is often missed?

Snap the single-pole unit onto the DIN rail, then torque the slotted box lug terminals — reversible line and load — to the specified value so connections stay secure.

When should the 10 kA high-magnetic breaker be replaced?

Replace it after a fault trip that exceeds the 10 kA interrupting rating, if the toggle mechanism feels loose, or when the 15 A thermal element shows signs of overheating.

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