The Schneider Electric Square D QOB3901021 is a miniature circuit breaker designed for reliable electrical protection in commercial and industrial environments. This 3-pole breaker, part of the QOB series, is engineered for branch circuit protection, offering a robust solution for safeguarding equipment and personnel. Its construction ensures consistent performance in demanding applications.

Technical details

• Series: QOB
• Poles: 3
• Amperage Rating: 90 A
• Voltage Rating: 240 VAC (compatible with 120/240 VAC systems)
• Interrupting Rating: Not specified in provided information; consult manufacturer datasheet for details.
• Terminal Type: Not specified in provided information; consult manufacturer datasheet for details.
• Mounting Type: Not specified in provided information; consult manufacturer datasheet for details.
• Trip Unit Type: Thermal-Magnetic

Applications & compatibility

This circuit breaker is commonly utilized in electrical distribution panels for protecting circuits in commercial buildings, manufacturing facilities, and data centers. It is suitable for applications requiring protection of motor loads, lighting circuits, and general-purpose branch circuits where a 3-pole, 90-amp device is specified.

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 QOB3901021 or contact our technical team for cross-reference assistance with compatible Square D QOB components.