Westinghouse | 504C740G27 | Circuit Breaker | 350A | 3-Pole | 600V | Bolt-On

Westinghouse 504C740G27 Circuit Breaker delivers reliable overcurrent protection for three-phase power systems. This 350A, 3-pole, 600V bolt-on unit is engineered for maintenance, retrofit, and replacement projects where exact specifications matter. If you’re upgrading aging panels or replacing a failed breaker in compatible equipment, this model is designed to keep your electrical distribution running smoothly.

Key specifications

• Part number: 504C740G27
• Amperage: 350 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Mounting: Bolt-On

Important: Confirm fit and ratings before ordering. The part number is the best reference for compatibility.

What makes this breaker stand out

• Bolt-On mounting for secure, durable attachment in compatible enclosures, helping ensure solid performance in vibration-heavy or high-load environments.
• 350 A rating suits mid-to-large feeders in commercial and light-industrial panels, enabling robust protection where higher current demand exists.
• 3-Pole configuration provides coordinated protection across all three phases in 600V systems, essential for balanced three-phase distribution.
• 600V capability aligns with typical industrial power networks and motor-control circuits, supporting a wide range of applications.
• Backed by Westinghouse engineering pedigree, offering predictable performance and compatibility within established panel platforms.

Ideal use cases

• Replacement for aging or failed breakers in bolt-on compatible panels and switchgear.
• Retrofit projects where a precise 350A, 3-pole, 600V protection device is specified.
• New installations in three-phase distribution setups requiring secure bolt-on protection with straightforward serviceability.

Installation and maintenance tips

• Use the 504C740G27 part number to verify compatibility with your enclosure and panel model before purchasing.
• Ensure proper bolt-on mounting torque and clean, undamaged mounting surfaces to maintain solid electrical contact.
• Inspect the device and surrounding wiring for signs of wear or corrosion prior to installation to prevent premature failure.
• Keep a record of the part number and panel compatibility notes for future replacements or upgrades.