Westinghouse EHD3040 - 40A, 480VAC, 3-Pole, Circuit Breaker

Westinghouse EHD3040 40A 480VAC 3-Pole Circuit Breaker — Precision Protection for Industrial Power

The Westinghouse EHD3040 is a purpose-built 40A, 480V AC circuit breaker designed to deliver reliable overcurrent protection in demanding electrical environments. Its 3-pole configuration provides robust three-phase protection, making it an ideal choice for panelboards, switchboards, and control panels where dependable safeguarding of motors, drives, and feeders is essential.

Why this 3-Pole breaker stands out

• Three-pole configuration enables balanced, synchronized protection across all three phases, simplifying wiring and improving fault response in MCCs and distribution panels.
• 40A current rating paired with a 480VAC rating supports mid-range motor control and high-load circuits common in industrial and commercial installations.
• Versatile integration designed to fit standard panelboard, switchboard, and control-panel footprints, reducing replacement time and inventory complexity for OEM projects.
• Overcurrent protection you can trust to interrupt fault or overload conditions safely, helping minimize equipment damage and unplanned downtime in critical systems.
• Westinghouse reliability brings compatibility with existing electrical architectures and a proven track record in distribution panels and motor control centers.

Ideal applications and use cases

• Industrial motor control centers (MCCs) and feeders in manufacturing lines, pumping stations, and conveyor systems.
• Commercial building distribution panels that require sturdy, three-phase protection for HVAC equipment, large lighting systems, and critical loads.
• OEM equipment where a compact, reliable 3-pole breaker is needed to safeguard integrated controls and power distribution.
• Switchboards and distribution panels that demand consistent performance across fluctuating load profiles and fault conditions.

What problems does it solve?

• Prevents damage from overloads and short circuits by quickly interrupting fault currents in three-phase systems.
• Simplifies panel design and maintenance with a single 3-pole solution suitable for many standard configurations.
• Reduces downtime risk in critical processes by providing stable, predictable protection for motors and drives.

Key specifications at a glance

• Current rating: 40A
• Voltage rating: 480VAC
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Practical tips for optimal use

When selecting the Westinghouse EHD3040, verify that your panelboard or MCC bus configuration accommodates a 3-pole device and that the intended loads operate within the 40A current range at up to 480V. For OEM or retrofit projects, consider how the 3-pole design can streamline wiring and improve phased protection across your system. Regular inspections of wiring terminations and mounting integrity will help maintain reliable performance in demanding environments.