Square D | KC34150CBA | Circuit Breaker | 150A | 3-Pole | 480V

Meet the Square D KC34150CBA circuit breaker—a precise, high-capacity protection solution for 3‑phase systems. Engineered for demanding environments, this 150A, 3‑pole unit is ideal for 480V distribution in industrial and commercial applications. When you’re performing maintenance, retrofitting an older panel, or replacing a failed breaker, matching the exact KC34150CBA specifications ensures safe, reliable operation without surprises.

Why this KC34150CBA stands out in real-world setups

• Exact electrical ratings: 150A, 3‑pole, designed for 480V three-phase power, providing dependable overcurrent protection for feeders, motors, and critical loads.
• Definitive compatibility reference: The part number KC34150CBA is the best guide for matching breakers to Square D panels and enclosures, reducing guesswork during replacement or retrofit.
• Maintenance and retrofit ready: Specifically suited for upgrades and replacements where maintaining the original spec is essential, helping you keep panel performance consistent.
• Brand-aligned reliability: As a Square D component, it aligns with the broader KC series ecosystem, supporting consistent performance across eligible distribution equipment.

Ideal use cases

• Replacing a failed or worn-out breaker in 480V, three-phase distribution within industrial facilities, manufacturing lines, or large commercial spaces.
• Retrofit projects where a precise 150A, 3‑pole, 480V specification is required to upgrade legacy panels without altering downstream wiring.
• Maintenance shutdowns where you need a verified, compatible substitute to minimize downtime and restore circuit protection quickly.

Important compatibility notes

• Always confirm fit and ratings before ordering to ensure seamless replacement in your existing panel.
• The KC34150CBA part number should be your primary reference when verifying compatibility with Square D panels and distribution equipment.
• Ensure your system operates at 480V and requires a 3‑pole configuration to fully leverage this breaker’s protection characteristics.

What you get

A single KC34150CBA circuit breaker from Square D, delivering 150A of three-pole protection for 480V three-phase circuits. Designed to integrate smoothly with compatible KC-series panels and equipment, supporting safe, reliable power distribution in demanding environments.

Practical tips for optimal results

• Before installation, double-check panel labeling and documentation to confirm that KC-series breakers are permitted and rated for your enclosure.
• During retrofits, map each circuit to its load profile to ensure the 150A capacity aligns with actual demand and minimizes nuisance tripping.
• Store replacement units in a clean, dry environment to preserve actuator mechanics and maintain consistent trip performance.