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White Square D QOU120VH miniature circuit breaker with black toggle switch and slotted box lug terminals

SQUARE D

SQUARE D QOU120VH Circuit Breaker 20A 1 Pole 120/240V

SKU CH-P0RG-D7YSM

High-interrupting miniature breaker rated 20 A, 120/240 V AC with 22 kA AIR for QO load centres

  • High interrupting capacity rated at 22 kA for reliable fault protection
  • Single-pole 20 A design fits standard QO load centres
  • 120/240 V AC rating covers residential and light-commercial circuits
  • 48 V DC rating adds flexibility for mixed-voltage panels
  • Reversible slotted box lug speeds up line and load wiring

Circuit breaker for QO load centres

This Square D QOU miniature circuit breaker provides single-pole protection at 20 A for 120/240 V AC and 48 V DC circuits. It is designed for surface or DIN rail mounting inside compatible QO series panelboards and load centres. The reversible slotted box lug accepts line or load conductors without reorientation.

High interrupting capacity for demanding circuits

The breaker delivers a 22 kA interrupting rating at 120/240 V AC, making it suitable for air-conditioning, refrigeration and heating equipment where fault currents can be high. Its single-pole, single-phase construction frees adjacent panel space for additional circuits while maintaining selective coordination within the QO system.

Toggle actuation with thermal-magnetic trip

The toggle actuator gives clear on, off and tripped indication during normal operation. Thermal-magnetic internals respond to sustained overloads and short circuits without external power. Power dissipation remains low in everyday use and the compact DIN rail footprint keeps enclosure temperatures stable.

Highlights

  • High interrupting capacity rated at 22 kA for reliable fault protection
  • Single-pole 20 A design fits standard QO load centres
  • 120/240 V AC rating covers residential and light-commercial circuits
  • 48 V DC rating adds flexibility for mixed-voltage panels
  • Reversible slotted box lug speeds up line and load wiring

Specifications

BrandSQUARE D

Questions about this item

What is the maximum interrupting rating of this 20 A breaker at 120/240 V AC?

The QOU120VH is rated for a maximum AIR of 22 kA at 120/240 V AC, providing high interrupting capacity for demanding fault conditions.

How much heat does the breaker dissipate when carrying 20 A continuously?

The miniature frame uses a toggle actuator and slotted box lugs that run cool under full load, and the high interrupting design limits let-through energy during faults.

Which load-center series must I already have for this single-pole unit to mount correctly?

It is compatible only with Square D QO panelboards and load centers, mounting on surface or DIN rail within that series.

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