Siemens HEM3M003 3A 3P 480V Circuit Breaker, Bolt-On | AmpState

The Siemens HEM3M003 3A 3P 480V Bolt-On Circuit Breaker is engineered for dependable three-phase protection in panelboards, load centers, and electrical distribution networks. Designed with retrofit and maintenance in mind, this part helps you keep your stock consistent while ensuring critical circuits stay protected in industrial environments.

Key specifications

• Manufacturer: Siemens
• Part Number: HEM3M003
• Product Type: Circuit Breaker
• Amperage: 3 A
• Poles: 3
• Voltage Rating: 480 V
• Mounting: Bolt-On

Why this breaker stands out

• Bolt-On mounting enables quick, secure installation in compatible Siemens panelboards and load centers, making retrofit projects and on-site maintenance faster and more reliable.
• Three-pole, 480V design is ideal for three-phase industrial power systems, delivering dependable protection across each phase.
• 3 A trip rating provides precise overload protection for control circuits, instrumentation, small motors, and other sensitive loads within industrial environments.
• Part integrity for maintenance planning retaining a consistent part number simplifies stocking, ordering, and long-term service scheduling.

Practical use cases

Use the Siemens HEM3M003 in environments where 480V three-phase distribution is common—manufacturing floors, HVAC control panels, motor control centers, and equipment racks requiring reliable protection without changing existing wiring or panel configurations. It’s especially valuable when retrofitting or updating panels that rely on a specific Siemens part number for compatibility and inventory.

Compatibility and support

This bolt-on circuit breaker is designed to fit compatible Siemens panelboards and load centers that support the HEM3 series. If you’re matching a part number for a repair or upgrade, AmpState offers support to confirm fit and compatibility with your current system setup.

Ready to secure your critical circuits with a trusted Siemens solution? AmpState has the HEM3M003 3A 3P 480V bolt-on breaker in stock. If you need help confirming compatibility, send us a message and we’ll verify fit for your panel and application.