Part of the Schneider Electric Square D QO series, the QO390VH is a miniature circuit breaker engineered for plug-in mounting. This 3-pole breaker is designed to provide robust circuit protection in electrical distribution systems, commonly found in commercial buildings and industrial facilities requiring reliable overcurrent and short-circuit safeguarding.

Technical details

• Series: Square D QO
• Poles: 3
• Voltage Rating: 120/240V AC
• Amperage Rating: 90A
• Interrupting Capacity: 22kA
• Mounting Type: Plug-in
• Trip Type: Thermal-Magnetic
• Wire Size Compatibility: Consult manufacturer datasheet for specific conductor size ranges.

Applications & compatibility

The QO390VH is suitable for use in various electrical panels and load centers within commercial and light industrial settings. Its 3-pole configuration makes it ideal for protecting three-phase circuits found in motor control applications, HVAC systems, and general power distribution where a common trip is required across all phases.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric Square D QO390VH or contact our technical team for cross-reference assistance with compatible QO series components.