HEF425040 | Circuit Breaker | 400A | 3-Pole | 600V

The HEF425040 Circuit Breaker is a rugged industrial protection device engineered for demanding electrical environments. With a 400A rating, a 3-Pole design, and a 600V maximum, it delivers reliable overcurrent protection for three‑phase systems, making it an essential component for maintenance, retrofit, and replacement projects where exact compatibility matters.

Built for durability and precise compatibility, this unit is ideal when you need a seamless fit in existing panels, switchgear, or distribution boards. The part number HEF425040 serves as the best reference to ensure you’re selecting a breaker that matches your current configuration and electrical demands.

Why this HEF425040 stands out

• Three‑pole protection: Specifically designed to safeguard all three phases in a three‑phase installation, helping prevent imbalanced loading and equipment damage.
• High current rating: 400A capacity supports sizable feeders and industrial circuits common in manufacturing, facilities, and mechanical systems.
• 600V operating range: Suitable for standard industrial distribution and motor-control environments where higher voltage protection is required.
• Explicit compatibility reference: Rely on the part number HEF425040 to confirm fit and ratings, reducing guesswork during retrofits and component replacements.
• Versatile application: A dependable choice for maintenance routines, panel refurbishments, or stock-up replacements to minimize downtime.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V

Typical use cases

• Maintenance and service upgrades in three-phase panels and switchgear.
• Retrofits where existing breakers require replacement with a matching 3-Pole, 600V unit.
• Spare part for aging systems to ensure quick, reliable restoration of power to critical loads.
• New installations that mirror the exact specifications of current equipment to maintain consistency in protection schemes.

Buying and installation tips

Before ordering, confirm fit and ratings to ensure compatibility with your equipment. Use the part number HEF425040 as the definitive reference to match the exact specifications your system requires. If you’re replacing a failed component or updating an older installation, keep this breaker’s 3‑pole, 400A, 600V profile in mind to maintain reliable protection and streamlined panel integration.