Square D | KCP34090 | Circuit Breaker | 90A | 3-Pole | 480V

Meet the Square D KCP34090 circuit breaker — a precisely engineered protection device built for demanding electrical environments. This 90 A, 3-pole unit is rated for 480 V, making it an ideal choice for three-phase power distribution in industrial and commercial settings where reliability matters.

Designed for maintenance, retrofit, and replacement projects where exact specifications are non-negotiable, the KCP34090 delivers dependable protection without guesswork. The part number itself is the best reference for compatibility, so you can be confident you’re selecting the correct device for your panel.

• Part number: KCP34090 — primary reference for exact compatibility
• Amperage: 90 A
• Poles: 3-Pole
• Voltage rating: 480 V
• Best use: maintenance, retrofit, and replacement in systems requiring the KCP34090 specification
• Compatibility tip: Confirm fit and ratings before ordering; the part number is your most reliable anchor

Why a 3-pole, 480V breaker matters: in a three-phase system, a 3-pole device ensures all phases are protected and disconnected simultaneously, reducing the risk of partial faults that can damage motors, drives, and feeders. The 90 A rating places it in a practical range for mid-size industrial panels and heavier commercial circuits, helping you balance protection with available capacity.

Ideal use cases include:

• Replacing a failed breaker in industrial control panels, switchgear, or motor control centers operating at 480 V three-phase
• Retrofits that require exact 90 A, 3-pole, 480 V specifications to maintain protection coordination
• Service entrances and distribution panels in manufacturing facilities, warehouses, and large commercial electrical rooms

Distinctive value comes from exact specification alignment and the trusted performance behind Square D protection products. By choosing the KCP34090, you’re aligning with a proven solution that supports safer shutdowns, predictable protection, and smoother maintenance workflows — all while keeping your system consistent with existing protection schemes.

If your project or panel calls for a 90 A, 3-Pole, 480 V circuit breaker with the precise KCP34090 reference, this Square D unit is designed to meet that need with clarity and reliability, helping you minimize downtime and keep critical equipment protected.