Comprehensive selection: single and three phase, 30 to 400 amps, 2 to 42 circuits, indoor and outdoor versions, separate flush or surface mount covers, full complement of accessories. Breaker format: 3/4″ circuit breaker width.

The QO load center and circuit breaker family is designed to satisfy individual requirements with a comprehensive selection:

• Single and three phase
• 30 to 400 amps 2 to 42 circuits
• Indoor and outdoor versions
• Separate flush or surface mount covers
• Full complement of accessories

Features

• New – Backed Out Neutral Screws save labor and installation time
• Exclusive shielded copper bus features electro tin plated copper bus bars sandwiched between two rugged polymer shields to insulate and secure the interior.
• Straight-in mains wiring and uniform termination lugs help minimize service cable bends, cutting waste and saving installation time.
• Convertible mains allow fast field conversion between main breaker and main lugs to meet changing job requirements.
• Standard 22,000/10,000 ampere series short circuit current rating on main breaker load centers provides increased application capability.
• QO three-phase main circuit breaker panels can be field upgraded to provide 100,000A short circuit current ratings.
• Single, captive interior mounting screw can’t be lost. Interior mounts quickly and can easily be removed during rough-in for paint or theft protection.
• Split branch neutral with up to 50% more terminations than UL requirement — simplifies wiring and reduces clutter.
• Indoor enclosures designed to rotate 180 degrees to accommodate top or bottom service entrance feed, saving expensive service cable.
• Combination slot/square-drive neutral, ground, and cover screw accommodate both standard flat blade screwdrivers and square-head drivers. Three ground bar mounting locations (left, right, and end) make it easier to wire.