Square D | KHB36090 | Circuit Breaker | 90A | 3-Pole | 600V

Meet the Square D KHB36090 Circuit Breaker—a purpose-built solution for clean, dependable protection in three‑phase electrical systems. Engineered by Square D, this 90A, 3‑pole breaker is designed to handle demanding environments while delivering dependable interruption at up to 600V.

This unit is ideal for maintenance, retrofit, and replacement projects where exact specifications matter. When you’re upgrading panels or refreshing aging gear, using the correct part number ensures seamless compatibility and reliable protection for your distribution circuits.

Key specifications

• Amperage: 90 A
• Poles: 3‑Pole
• Voltage rating: 600V

Important note: Confirm fit and ratings before ordering. The part number KHB36090 is the best reference for compatibility with Square D panels and associated equipment.

Why choose this Square D breaker

• Specifically identified by the KHB36090 part number, reducing guesswork during replacement or retrofit.
• Delivers coordinated protection across all three phases, essential for motors, industrial controls, and multi‑circuit panels.
• Suitable for higher‑voltage distribution environments where reliable interruption is critical for safety and uptime.
• A straightforward drop‑in replacement when your panel expects a matching Square D form factor and trip characteristics.

Ideal use cases

• Upgrading aging switchgear in manufacturing or processing facilities where three‑phase protection is required.
• Retrofit projects replacing obsolete or mismatched breakers with a precise, factory‑specified Square D part.
• Maintenance cycles in commercial or light industrial panels that demand predictable performance and easy sourcing by part number.

Compatibility and installation tips

• Double‑check your panel model and the bus configuration to ensure the KHB36090 form factor is a match.
• Use the exact part number when ordering to minimize compatibility risk and ensure correct trip characteristics.
• Follow standard safety procedures during installation and verify the circuit is de‑energized before replacing the breaker.
• Test the circuit after installation to confirm proper interruption and coordination with adjacent protective devices.