Designed for robust electrical protection in commercial and industrial settings, the Schneider Electric Square D QOB390VH1021 is a three-pole miniature circuit breaker from the QOB series. This breaker is engineered to manage circuits with a voltage rating of 120/240 VAC and a significant current carrying capacity of 90 Amps, making it suitable for demanding power distribution applications.

Technical details

• Series: Square D QOB
• Poles: 3
• Voltage Rating: 120/240 VAC
• Current Rating: 90 Amps
• Interrupt Rating: 22 kA
• Mounting Type: Bolt-on
• Terminal Type: Load side lug (VH1021 designation indicates specific terminal configuration, consult datasheet for full details)
• Frame Size: QOB frame (standard for this series, consult datasheet for specific dimensions)

Applications & compatibility

The QOB390VH1021 is commonly specified for use in electrical distribution panels, motor control centers, and branch circuit protection within manufacturing facilities, data centers, and commercial buildings. Its three-pole configuration is ideal for protecting three-phase loads or circuits requiring simultaneous switching of all conductors.

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 QOB390VH1021 or contact our technical team for cross-reference assistance with compatible Square D QOB components.