Square D | KAL360901021 | Circuit Breaker | 90A | 3-Pole | 600V

Square D KAL360901021 is a precisely rated circuit breaker engineered for maintenance, retrofit, and replacement projects where exact specifications matter. This 90A, 3-pole device is built to protect three-phase circuits up to 600V, providing reliable, consistent protection for your electrical system.

Key specifications

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

Why this matters for your electrical system

In three-phase installations, a 3-pole breaker like the KAL360901021 ensures balanced protection across all three phases, helping prevent unbalanced loads and protecting equipment from overcurrent. This Square D component is ideal for panel upgrades, service improvements, or replacing a worn or failed breaker with an exact-match part number.

Who it's for

Facilities managers, electrical contractors, and maintenance teams overseeing commercial or light industrial panels that require a 90A, 3-pole, 600V protection solution. If your project demands a part-number-specific replacement, this breaker is designed to align with compatibility requirements when KAL360901021 is the reference.

Compatibility and installation notes

Before purchasing, confirm fit and ratings for your system. The part number is the most reliable reference for compatibility, so cross-check KAL360901021 against your panel model and manufacturer catalogs. This is a straightforward replacement in systems that require a 90A, 3-pole, 600V circuit breaker.

Practical use cases

• Replacing a failed 90A, 3-pole unit in a three-phase commercial panel.
• Retrofit projects where a like-for-like Square D breaker is needed to maintain panel labeling and warranty conditions.
• Maintenance upgrades for aging electrical infrastructure requiring precise specifications and reliable performance.

Tips for best results

Prepare by having your panel’s documentation handy and verify that the replacement part number (KAL360901021) matches the required amperage, pole configuration, and voltage. If in doubt, reference the panel’s installation guide or contact a licensed electrician to ensure proper fit and safe operation.