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Compact beige plastic circuit breaker with black toggle switch and slotted terminal lugs

SQUARE D

SQUARE D QOU115 Circuit Breaker 15A 1 Pole 120/240V AC

SKU CH-5PP1-0D3T7

A 15 A single-pole miniature circuit breaker rated 120/240 V AC and 48 V DC with a 10 kA interrupting rating for QO load centres

  • Protects circuits up to 10 kA interrupting capacity
  • Handles 15 A single-phase loads at 120/240 V AC
  • Fits QO panelboards with reversible slotted box lugs
  • Rated 48 V DC for mixed voltage panels
  • Mounts on surface or DIN rail in 100 A frame

QOU115 Miniature Circuit Breaker

The SQUARE D QOU115 is a standard single-pole miniature circuit breaker rated at 15 A for 120/240 V AC systems. It belongs to the QO series and mounts on surface or DIN rail hardware. The toggle actuator provides clear on-off indication. It is suited for residential and light commercial branch-circuit protection.

Verify panel series and mounting before ordering

Confirm the load center or panelboard is a compatible QO series unit before purchase. The breaker uses a slotted box lug terminal that accepts reversible line and load connections. Ensure the available mounting space matches the surface or DIN rail requirement. The maximum AIR rating is 10 kA at 120/240 V AC.

Replaces standard QO single-pole breakers

This unit serves as a direct replacement for existing QO series single-pole breakers with the same amperage and voltage ratings. The upgrade is worthwhile when a breaker has tripped repeatedly or shows signs of wear. It also supports circuits for air conditioning, refrigeration and heating equipment rated at 48 V DC.

How it compares

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

Price $17.99
Cheaper than about 82% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSQUARE D

Questions about this item

Does the breaker ship with mounting hardware or must I buy DIN-rail clips separately?

The unit is designed for surface or DIN-rail mounting in QO-series panels; mounting hardware is not included and must be sourced separately.

Should I select the 15 A single-pole version or a different amperage for a standard 120 V branch circuit?

Choose the 15 A single-pole model when the circuit is rated for 15 amps at 120/240 V AC; other amperages are separate part numbers.

What does the 10 kA interrupting rating mean when the breaker is installed in a live panel?

It indicates the breaker can safely interrupt up to 10 kA of fault current at 120/240 V AC without damage.

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