Square D | KA360901021 | Circuit Breaker | 90A | 3-Pole | 600V

Designed for demanding three‑phase electrical systems, the KA360901021 Square D circuit breaker delivers dependable protection for critical equipment. With a 90‑amp rating, a 3‑pole configuration, and 600V capability, this unit is built to handle the high‑load profiles found in commercial, industrial, and data‑center environments.

• Amperage: 90A
• Poles: 3‑pole
• Voltage rating: 600V
• Reference: Part number KA360901021 is the best compatibility cue for replacement, retrofit, or maintenance
• Type: Genuine Square D circuit breaker designed for use in compatible panels

Key use cases

Ideal for maintenance, retrofit, and replacement when your panel requires a 90A, 3‑pole, 600V protection device. Perfect for upgrading aging networks, reconfiguring three‑phase equipment, or repairing damaged breakers without risking compatibility issues.

What sets this breaker apart

• Exact compatibility: The KA360901021 part reference minimizes guesswork, ensuring you match the panel’s required specs and maintain electrical safety.
• Three‑phase protection: The 3‑pole design reliably interrupts all three phases, helping preserve balanced loads and protecting downstream equipment.
• Robust, field‑friendly design: Built for regular maintenance and ready for retrofit projects in industrial and commercial settings.
• Clear ordering path: When the panel or refurbishment project specifies KA360901021, this breaker provides a direct, trustworthy replacement without improvisation.

Compatibility and installation notes

Before ordering, confirm that your equipment calls for a 90A, 3‑pole, 600V breaker and that KA360901021 is the correct part reference for your panel. Use this part for panels and datasets that list Square D breakers with the KA360901021 designation to ensure a safe, code‑compliant fit and reliable performance in service interruptions.

In practical terms, this Square D breaker is a solid choice for professionals upgrading or maintaining three‑phase electrical systems that demand dependable overcurrent protection at 600V. It’s a precise, purpose‑built solution designed to keep systems running smoothly and safely.