Square D QO 22kA Miniature Circuit Breaker, Bolt-On

Square D QO 22kA Miniature Circuit Breaker, Bolt-On

The Square D QO 22kA Miniature Circuit Breaker is a thermal magnetic circuit breaker from the QO range, built for overcurrent protection and switching on AC and DC systems. Available in 1, 2, and 3-pole configurations rated for 120 V AC or 120/240 V AC systems, this bolt-on breaker delivers a 22kA interrupt rating for demanding applications. It is HACR rated and accepts AWG 8...AWG 2 copper or aluminum conductors, a dependable choice for panelboard upgrades and new installations.

Key Features

• QO Range: Part of the Square D QO family of thermal magnetic circuit breakers, available in 1, 2, and 3-pole configurations.
• Mounting: Bolt-on connection secures the breaker firmly to the panelboard bus for a reliable installation.
• Interrupt Rating: 22kA interrupt capacity supports higher fault-current applications than standard QO breakers.
• Trip Mechanism: Over-center, trip-free toggle mechanism provides quick-make, quick-break switching with positive trip indication.
• Voltage Rating: Rated for 120 V AC or 120/240 V AC operation depending on pole configuration.
• Wire Range: Accepts AWG 8...AWG 2 copper or aluminum conductors.
• Operating Temperature: Rated for ambient air operation up to 40 °C.
• Application: HACR rated for heating, air conditioning, and refrigeration circuits.

Certifications & Compliance

• UL Listed
• CSA Certified
• RoHS Compliant
• Mercury Free

Technical Specifications

• Toxic Heavy Metal Free: Yes
• Warranty Period: 18 months
• Sustainable Packaging: No
• Recycled Metal Content At Cr Level: 0 %
• H And D Enrichment Function: MCB
• Serviceability: No
• With Recycled Cardboard: No
• Range Of Product: QO
• China ROHS In Scope: No
• Legacy WEEE Scope: In
• Without Single Use Plastic: Yes
• ROHS Exemption Information: Yes
• WEEE Product Category: 5
• Mercury Free: Yes
• ROHS Eur In Scope: Yes
• Environmental Disclosure: ENVPEP2111016

Typical Applications

• Residential and Commercial Panelboards
• Load Center Circuit Protection
• HACR Equipment Circuits (Heating, Air Conditioning, Refrigeration)
• Higher Fault-Current Electrical Systems
• New Construction and Panel Upgrades

Why Square D?

Square D by Schneider Electric engineers the QO breaker line for reliable, code-compliant circuit protection, backed by an 18-month warranty and UL Listed, CSA certified construction. The trip-free toggle mechanism and bolt-on mounting are built for consistent performance in panelboard environments, while RoHS-compliant and mercury-free construction supports responsible manufacturing.