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White rectangular two-pole circuit breaker with black toggle switch and slotted box lug terminals

SQUARE D

SQUARE D QOU220VH Miniature Circuit Breaker 20A 2 Pole 120/240V

SKU CH-Z00P-MBPM8

Two-pole miniature circuit breaker rated 20 A at 120/240 V AC with 22 kA interrupting capacity for QO load centres

  • 22 kA interrupting rating protects circuits during severe faults
  • 20 A two-pole design handles 120/240 V AC loads
  • 48 V DC rating adds flexibility for mixed systems
  • QO panel compatibility ensures direct fit in existing boards
  • Slotted box lug terminals accept line or load wiring either way

What this breaker does

This Square D QOU220VH miniature circuit breaker provides overcurrent protection for single-phase circuits at 120/240V AC and 48V DC. It is rated at 20 A with a high interrupting capacity of 22 kA at 120/240V AC. The two-pole toggle design suits air-conditioning, refrigeration and heating equipment in QO-series panelboards.

What the terminal style changes

Slotted box lugs with reversible line and load connections simplify wiring in either direction. Surface and DIN-rail mounting options give flexibility for panel builders. The high AIR rating of 22 kA at 120/240V AC means the breaker can safely clear larger fault currents than standard models.

What to verify before ordering

Confirm your panelboard is a QO-series unit that accepts QOU breakers. Check that the circuit requires a two-pole 20 A device and that the available fault current does not exceed 22 kA at 120/240V AC. Ensure the mounting method matches your enclosure and that 48V DC rating covers any DC control circuits.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $150.99
Pricier than about 78% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSQUARE D

Questions about this item

Will the 20 A toggle breaker itself need periodic replacement under normal service?

The breaker is a new SQUARE D QOU series unit rated 20 A with a 22 kA interrupting capacity; it is designed to operate without scheduled replacement unless it trips or shows physical damage.

What is the first limit reached when the breaker carries 20 A continuously on a 120/240 V AC circuit?

The breaker’s continuous current rating of 20 A is the primary limit; sustained loads above 20 A will cause the thermal-magnetic mechanism to trip.

How much heat or noise does the QOU220VH produce when it runs all day at full load?

At its rated 20 A the device generates only the normal warmth of a moulded-case breaker and operates silently; no fan or active cooling is present.

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