Westinghouse | HMA3500 | Circuit Breaker | 500A | 3-Pole | 600V | 35kA

Meet the Westinghouse HMA3500 Circuit Breaker—a rugged, three-pole protective device built for reliability in demanding 600V systems. With a 500A continuous rating and a robust 35kA interrupting capacity, this breaker is engineered for maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 500A
• Poles: 3-Pole
• Voltage: 600V
• Interrupting rating: 35kA

Why this breaker stands out

Designed to uphold Westinghouse’s longstanding commitment to safety and performance, the HMA3500’s 3-pole configuration provides balanced, three-phase protection across your distribution circuits. The 35kA interrupting capacity ensures reliable fault interruption, helping to minimize collateral damage to panelboards and downstream equipment when a fault occurs. This isn’t a generic replacement—it’s a purpose-built solution for serious, real-world electrical protection.

Ideal use cases

• Retrofits and replacements in existing 600V systems where the HMA3500 precisely matches the original spec
• New installations in commercial or light industrial panels that require solid three-phase protection
• Maintenance projects aiming to standardize protection across three phases with a proven, durable device

Compatibility and installation tips

Before ordering, confirm fit and ratings against your equipment. The part number HMA3500 is the best reference for compatibility with your panel or switchgear. When replacing an older unit, verify that the bus arrangement, mounting style, and trip characteristics align with your protection scheme. Installation and testing should be performed by a qualified electrician in accordance with local electrical codes.

Practical considerations

Keep a spare HMA3500 on hand for planned maintenance or rapid replacements. Store in a dry, cool environment to preserve performance, and handle carefully to maintain reliable high-current operation when installed.