Description
Description
The Square D QO290 is a heavy-duty, commercial- and residential-grade miniature circuit breaker designed to provide reliable overload and short-circuit protection for electrical distribution systems. As part of Square D’s industry-leading QO product line, this two-pole thermal-magnetic breaker is engineered to plug easily into compatible QO load centers, NQ/NQOD panelboards, and Speed-D switchboard distribution panels. Known for its dependability and compact footprint, it is an ideal choice for safeguarding higher-amperage household or light-commercial sub-panels, large appliances, and HVAC equipment.
Features
- Amperage & Voltage Rating: Rated for 90 Amps with a voltage capacity of 120/240 VAC, making it well-suited for heavy load requirements.
- Poles & Trip Type: Features a 2-pole configuration with a common-trip mechanism, ensuring that if a fault occurs on one line, both poles simultaneously disconnect to completely cut off power.
- Interrupting Rating: Offers a 10 kA (10,000 Amp) AIR (Ampere Interrupting Rating) at 120/240 VAC.
- Mounting Style: Utilizes a convenient plug-in mounting design for fast, secure installation into compatible enclosures.
- Wire Compatibility: Equipped with sturdy box lug terminals that accommodate wire sizes ranging from 4 AWG to 2/0 AWG for both copper and aluminum conductors.
- HACR Rated: Certified safe for use with heating, air conditioning, and refrigeration equipment applications.
- Certifications: UL Listed and CSA Approved, meeting stringent industry safety and performance standards.
