Square D KC34225 - 225 A, 480 V, 3-Pole Plug-In Circuit Breaker | AmpState

Square D KC34225, available from AmpState, is a 225 A, 480 V, 3-Pole Plug-In Molded Case Circuit Breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers.

• Fast plug-in connection enables rapid installation and straightforward replacement, reducing downtime during panel upgrades or servicing.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining a thermal element for overload with a magnetic element for short circuits.
• OEM panel compatibility is engineered to mount in matching Square D load centers and panelboards, ensuring a secure, code-compliant fit.
• Versatile across environments suitable for residential, commercial, and light industrial applications where reliable 480 V protection is required.

The KC34225 is specifically designed for 3-Pole applications in 480 V systems, protecting feeders and large circuits while safeguarding motor-driven equipment. Its plug-in mounting simplifies field swaps, minimizes wiring mistakes, and keeps downtime to a minimum during maintenance or panel expansions.

Key technical details

• Manufacturer: Square D
• Part Number: KC34225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits from this 3-Pole plug-in breaker? Engineers and electricians building or maintaining 3-phase commercial systems, panel manufacturers integrating dependable protection into distributed loads, and facilities managers overseeing light industrial equipment. This breaker helps protect circuits against overloads and short circuits without adding complexity to installation or future panel upgrades.

How it stands up to alternatives: when fast replacement, reliable protection, and OEM panel compatibility are priorities, the KC34225’s plug-in design reduces labor time and minimizes setup errors. Its thermal-magnetic protection aligns with standard protection strategies in Square D OEM panels, delivering predictable performance under fault conditions.

Practical tips: confirm panelboard compatibility with the exact Square D load center model, follow safe handling practices for molded case breakers, and keep spare KC34225 units on hand for quick replacements in mission-critical panels. Built for 480 V three-phase distribution, this breaker supports durable, ongoing electrical system integrity.