Square D | KAP36090 | Circuit Breaker | 90A | 3-Pole | 600V

Meet the Square D KAP36090 Circuit Breaker—a rugged, three‑pole, 90‑amp device rated for 600V, built to protect three‑phase power for industrial and commercial systems. Designed for maintenance, retrofit, and replacement projects where exact specs matter, this breaker ensures you can keep critical equipment protected without overhauling your panel architecture.

Key specifications

• Amperage: 90A
• Poles: 3‑Pole
• Voltage rating: 600V
• Part number: KAP36090
• Manufacturer: Square D

Compatibility and installation note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility, and this breaker is intended for panels and enclosures designed to accept Square D KAP style devices. Use this as your primary replacement or retrofit choice when your system requires a 3‑pole, 90A, 600V breaker.

What it does for your system

This 3‑pole breaker provides coordinated protection across all three phases, helping to isolate faults and protect motors, drives, and other three‑phase equipment. It supports safe, quick shutdown during overloads or short circuits, reducing downtime and damage in demanding environments.

Ideal use cases

• Replacing a failed 3‑pole breaker in existing Square D panels that require a KAP36090.
• Retrofitting a three‑phase distribution system with reliable, precise 90A protection at 600V.
• Keeping a field spare on hand for maintenance on industrial equipment such as pumps, conveyors, CNC machines, or HVAC systems.
• Planning panel upgrades where matching the exact part number ensures seamless compatibility and code compliance.

Tips for seamless upgrade and reliability

• Verify the panel’s compatibility list and bus configuration to ensure perfect fit with KAP36090.
• Check that your system’s voltage and load requirements align with a 600V, 90A three‑pole protection scheme.
• Keep the exact part number (KAP36090) on hand as the most reliable reference when ordering replacements or spares.