Square D QOB225VH1021 25A 2-Pole 225 V Circuit Breaker Potential Transformer

The Square D QOB225VH1021 is a dependable 25A, 2-Pole, 225V circuit breaker designed to protect circuits and simplify panel configurations in commercial and industrial environments. As part of the trusted Square D family, this device delivers reliable protection performance with a compact footprint and straightforward installation.

Key specifications

• Current rating: 25 A
• Poles: 2
• Voltage rating: 225 V
• Part number: QOB225VH1021
• Brand: Square D

What makes this breaker unique

With a two-pole configuration, this breaker provides simultaneous disconnection of both hot legs, which enhances safety and ensures consistent protection for 240V circuits. Built to meet the demands of commercial and industrial panels that support Square D devices, the QOB225VH1021 offers dependable trip performance when overcurrent conditions occur. The inclusion of the potential transformer option in its design supports integration with monitoring and protection schemes, expanding its utility in more complex electrical systems.

Ideal use cases

• Protecting 240V branch circuits in commercial panels or industrial control stations
• Upgrading or retrofitting installations that require a 25A, two-pole protection device
• Systems that integrate with metering or protection schemes using a potential transformer

Installation and compatibility

Ensure your enclosure accepts Square D QOB-series breakers and follow local electrical codes during installation. This unit is designed for straightforward replacement in compatible panels, with secure terminal connections and proper alignment to bus bars. Always switch off main power and verify isolation before servicing.

Reliability and longevity

Manufactured to stringent standards, the QOB225VH1021 delivers stable trip performance and durable construction for long service life in demanding environments. Its 225V rating supports a broad range of residential and commercial 240V applications where precise overcurrent protection is essential.