General Electric V17340 40A 3-Pole 277 V Circuit Breaker Potential Transformer

Meet the General Electric V17340, a purpose-built circuit protection solution designed for demanding 3-phase environments. This 40A, 3-pole unit is rated for 277V, making it an ideal choice for commercial and light industrial panels that orchestrate three-phase power distribution and lighting systems. Built on GE’s heritage of reliability, the V17340 helps you maintain safe, consistent shutdowns across all three phases when faults occur, reducing downtime and protecting downstream equipment.

Key specifications

• Part number: V17340
• Current rating: 40 A
• Poles: 3
• Voltage rating: 277 V

Why this 3-pole, 277V breaker matters

Three-pole protection ensures simultaneous disconnection of all three phases during a fault, preventing dangerous open-phase conditions that can stress equipment and wiring. The 277V rating aligns with common commercial power distribution for lighting and motor loads, delivering dependable performance where 277V systems are standard. Partnered with General Electric’s engineering lineage, the V17340 is built to endure the rigors of daily operation in busy electrical rooms and distribution panels.

Real-world use cases

• Three-phase lighting feeders in office complexes, retail centers, and schools that run on 277V systems.
• Motor and machinery feeders in manufacturing and processing facilities where coordinated phase protection is critical.
• Distribution panels in commercial buildings that require reliable fault interruption across all phases to protect downstream equipment.

How it delivers value

Unlike single- or two-pole breakers, this 3-pole arrangement provides comprehensive protection for multi-phase circuits, helping prevent nuisance trips and ensuring proper coordination with metering or protection schemes that rely on consistent phase shutdown. The V17340 is a straightforward replacement or integration within GE-compatible panels, supporting smooth maintenance and system upgrades without extensive rework.

Practical guidance and considerations

• Ensure the panel and load configuration are designed for 277V three-phase operation and that a 40A protection level matches the connected loads.
• Use in systems where potential transformers or metering sensors are part of the protection and monitoring strategy, to support accurate fault indication and safe isolation.
• Follow appropriate installation practices for circuit breakers within GE-compatible enclosures, including correct alignment, secure mounting, and verification of electrical clearances in the panel.

Durability and reliability you can count on

As part of General Electric’s esteemed lineup, the V17340 embodies robust construction and consistent performance under normal and fault conditions. This 40A, 3-pole, 277V breaker is designed to handle the demands of modern electrical distribution, delivering dependable protection with clear, trip-ready action when faults occur.