HMCA3400 | Circuit Breaker | 400A | 3-Pole | 600V

The HMCA3400 Circuit Breaker is an industrial-grade protective device designed for demanding electrical environments. With a 400A rating, a 3-Pole configuration, and a 600V maximum, it delivers reliable, coordinated protection for three-phase power systems while helping minimize downtime during maintenance or upgrades.

Why the HMCA3400 stands out

• Three-phase protection in one unit: The 3-pole design ensures all phases trip together, reducing the risk of phase imbalance and safeguarding connected equipment.
• High-current capability: At 400A, this breaker is well-suited for mid-to-heavy load applications commonly found in manufacturing, processing, and industrial controls.
• Voltage tolerance up to 600V: Built for modern industrial distributions, supporting a wide range of panel and switchgear configurations.
• Maintenance, retrofit, and replacement ready: Specifically positioned for tasks where exact specifications are required to match existing systems.
• Clear compatibility reference: The part number HMCA3400 is the best reference to verify fitment and ratings before ordering.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Reference: HMCA3400 (best compatibility identifier)

Ideal use cases

• Maintenance projects on existing 3-phase panels that require exact 400A, 600V protection
• Retrofit and upgrade of aging switchgear where compatibility with HMCA3400 is essential
• Replacement parts for spare parts inventories to minimize equipment downtime
• New installations in industrial environments that run on three-phase power up to 600V

Fitment, compatibility, and practical tips

Before ordering, confirm fit and ratings to ensure seamless replacement. Use the HMCA3400 as the primary reference to match panel design, mounting style, and bus connections. If you’re cataloging spare parts for a facility, pairing this breaker with corresponding accessories and a compatible enclosure helps maintain regulatory compliance and consistent performance across your electrical distribution system.

Maintenance and care for long-term reliability

Plan regular visual inspections of the breaker and its terminals, watch for signs of heat or discoloration, and ensure connections stay torqued to manufacturer specifications by a qualified electrician. Keeping a current HMCA3400 on hand supports rapid replacement during scheduled maintenance or unforeseen outages, helping keep critical processes online with minimal disruption.