Siemens HEM3M070 70A 3-Pole 480 V Circuit Breaker

Siemens HEM3M070 is a rugged, three‑pole circuit breaker engineered for demanding 480 V three‑phase power networks. With a 70 A current rating and a three‑pole configuration, this device delivers dependable protection for industrial equipment and control circuits in commercial or manufacturing environments.

Key specifications at a glance:

• Current rating: 70 A
• Poles: 3
• Voltage rating: 480 V
• Part number: HEM3M070

Why this model stands out:

• Three‑pole design ensures simultaneous disconnection of all three live conductors, enhancing safety for balanced 3‑phase loads and reducing arc risk during fault conditions.
• Specifically suited for 480 V distribution, making it a reliable choice for industrial panels, machine control centers, and process lines that operate at higher voltages.
• Built with the durability and reliability associated with Siemens, designed to withstand the rigors of daily industrial use and maintain consistent protection over time.

Practical use cases:

• Protections for motors, conveyors, and other 3‑phase equipment in manufacturing facilities powered by 480 V systems.
• Distribution panels and service enclosures in warehouses, data centers, and building services that employ 480 V three‑phase networks.
• Main protection device in industrial plants requiring a 70 A, three‑pole interruption to safeguard critical loads.

How it helps you manage risk and uptime:

• Interrupts fault current quickly and cleanly to prevent damage from overloads or short circuits on 3‑phase circuits.
• Seamless integration within Siemens ecosystems, supporting straightforward maintenance and reliable long‑term protection.

Notes on compatibility and installation:

• Best utilized in Siemens‑compatible panels and switchgear designed for 480 V three‑phase operation.
• Ensure alignment with your panel’s ampacity rating and trip characteristics to maintain system protection and compliance.