Square D | HJP36090 | Circuit Breaker | 90A | 3-Pole | 600V

Meet the Square D HJP36090 — a genuine 90A, 3-pole, 600V circuit breaker designed for reliable protection in industrial and commercial electrical systems. Built for maintenance, retrofit, and replacement, this device gives you exact spec alignment with your existing Square D panels, ensuring seamless compatibility and dependable operation when it matters most.

Key specifications

• Amperage: 90A
• Poles: 3-Pole
• Voltage rating: 600V
• Part number: HJP36090

What makes this 3-pole, 600V breaker special

As a genuine Square D component, the HJP36090 delivers consistent trip performance and mechanical reliability that professional technicians rely on in three-phase networks. The exact part-number match minimizes retrofit guesswork, reducing downtime and ensuring you’re protected by the same standards used in original installations. This isn’t a generic replacement—it’s a deliberate, spec‑accurate upgrade that preserves coordination with upstream devices, panel labeling, and field-proven protection characteristics.

Ideal use cases

• Replacement for a failed 3-pole, 600V circuit breaker in a Square D panel or switchgear
• Retrofit of older equipment to modern, code-aligned protection without changing your panel infrastructure
• Maintenance stocking: a ready-to-install 90A protection device for motor drives, pumps, compressors, and other 3‑phase loads

Fit, compatibility, and procurement tips

Before you order, verify that your panel model and bus-stab arrangement match the HJP36090. The part number is the most reliable reference for compatibility, so keep it handy when consulting your distributor or catalog. If your panel requires 3-pole, 600V protection with a 90A rating, this unit is a precise, drop-in match.

Practical installation and use tips

• Have a qualified electrician perform installation to ensure proper torque on terminals and correct bus alignment.
• Confirm that the protected circuit’s load and short-circuit current are within the breaker’s rating to avoid nuisance trips.
• Store spare HJP36090 in a dry, temperature-controlled area to preserve performance and avoid corrosion.

Whether you’re refreshing a legacy panel, upgrading to maintain safety standards, or stocking a reliable spare for service crews, the Square D HJP36090 delivers the precise protection you expect from a trusted OEM. Use the part number as your guide to exact compatibility, and protect your three-phase equipment with confidence.