Square D QBM32225TN - 225 A, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D QBM32225TN is a 225 A, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to endure demanding electrical environments, this unit delivers consistent protection you can trust across installations.

• Secure bolt-on mounting: ensures a rigid, vibration-resistant bus connection for reliable electrical contact and long-term performance.
• Thermal-magnetic trip unit: provides stable, repeatable protection by responding accurately to both overload and fault conditions.
• OEM-compatible design: ready to pair with matching OEM load centers and panelboards for a plug-and-play installation experience.
• Versatile applications: suitable for residential, commercial, and light industrial environments where dependable protection is essential.

Specifications at a glance

• Manufacturer: Square D
• Part Number: QBM32225TN
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225 A
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this breaker stands out is how it translates protection into real, everyday reliability. The thermal-magnetic trip unit minimizes nuisance trips while delivering fast response to genuine faults. The bolt-on mounting reduces the risk of loose connections in vibration-prone panels, helping maintain a consistent trip profile over time. And because it’s designed to be compatible with OEM load centers and panelboards, you can upgrade or expand your electrical system without sacrificing fit or performance.

Ideal use scenarios include upgrading distribution in residential panelboards that require robust 225 A protection, powering small commercial panels with steady overcurrent safeguards, or supporting light industrial circuits where dependable fault isolation matters. Pair this breaker with appropriate bus connections and compatible panel enclosures, and you’re equipped for reliable, long-term protection in the most demanding environments.