Westinghouse | LM3275 | Circuit Breaker | 275A | 3-Pole | 600V

When your three‑phase electrical system demands dependable protection, the Westinghouse LM3275 circuit breaker is built to deliver. This 3‑pole unit operates at 600V with a robust 275A rating, making it a practical choice for commercial and industrial applications where reliable interruption is non‑negotiable. Whether you’re performing routine maintenance, retrofitting an older panel, or replacing a failed breaker, the LM3275 is engineered to keep your process running smoothly and safely.

• Amperage: 275 A
• Poles: 3‑Pole
• Voltage rating: 600 V

Why this matters in real-world use. A three‑pole breaker like the LM3275 protects all phases of a three‑phase system and guarantees coordinated disconnection during a fault. That means reduced arc exposure, minimized equipment damage, and quicker fault isolation—critical outcomes for motor control centers, distribution panels, and large‑load feeders common in manufacturing, data centers, and HVAC infrastructure.

Key benefits and unique value

• The part number LM3275 is your best reference for fitting the right replacement or retrofit, simplifying ordering and reducing the risk of mismatched sizing.
• Standardized ratings and mounting compatibility help you modernize panels without reconfiguring existing bus assemblies.
• Suitable for continuous duty environments where three‑phase protection and quick, predictable tripping are essential.
• A straightforward fit‑and‑function option for projects that require exact specs and minimal guesswork.

Ideal use cases

• Upgrading or replacing breakers in three‑phase motor drives, pumps, and compressors.
• Retrofits in commercial buildings, manufacturing lines, and processing facilities where 600 V systems are standard.
• Spare or service stock for maintenance programs that prioritize rapid part identification by exact model number.

Practical tips for a smooth lifecycle

• Always confirm fit and ratings before ordering. The LM3275 part number should be your primary compatibility reference.
• Match your feeder and conductor sizes to the 275 A rating to avoid nuisance trips or undersized protection.
• Refer to your panel’s labeling and installation instructions to ensure correct mounting, alignment, and contact usability.
• Keep a standby LM3275 on hand for planned maintenance windows to minimize equipment downtime.

If you’re upgrading a panel, replacing a failed unit, or stocking a reliable spare for critical three‑phase circuits, the Westinghouse LM3275 275A, 3‑pole, 600V circuit breaker offers precise compatibility, solid protection, and decision‑maker clarity through its straightforward part‑numbers guidance. Add it to your next maintenance project and protect your investment with a breaker that’s built for steady performance in demanding environments.