Description
The Siemens HEM3M070 is a 3-pole motor circuit breaker rated for 70 A at 480 V AC, designed with magnetic-only protection. Built on a 125 A frame, it provides reliable short-circuit protection for motor circuits in industrial applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Siemens |
| Category |
Circuit Protection |
| Part Number |
HEM3M070 |
| Subcategory |
Motor Circuit Breakers |
| Type |
Motor Circuit Protector |
| Current Rating |
70 A |
| Frame Size |
125 A |
| Voltage Rating |
480 V AC |
| Poles |
3 |
| Phase |
3-phase |
| Trip Unit |
Magnetic only |
| Protection |
Instantaneous short-circuit protection |
| Connection |
Bolt-on |
| Functions |
I – Instantaneous |
| Standards |
UL, CSA, NOM, IEC |
| Application |
Motor circuit protection |
| Interrupting Capacity |
High interrupt |
| Lugs |
No lugs included |
| Mounting |
Panel/Bolt-on installation |
| Weight |
2.70 lbs |
Information About HEM3M070
The HEM3M070 is part of Siemens’ motor circuit protection line, designed to safeguard motors against short-circuit events with magnetic-only trip functionality. This device is rated at 70 A and supports up to 480 V AC, making it suitable for a wide range of industrial motor applications. Built on a 125 A frame size, it delivers robust performance while ensuring compact installation. Certified under UL, CSA, NOM, and IEC standards, the HEM3M070 ensures compliance with global electrical safety requirements. Its bolt-on connection design allows straightforward integration into motor control panels and distribution systems.
Key Features:
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70 A Current Rating: Provides dependable protection for motors operating at 480 V AC.
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Magnetic-Only Trip Unit: Delivers instantaneous short-circuit protection without thermal overload.
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3-Pole, 3-Phase Design: Ensures compatibility with standard industrial motor circuits.
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High Interrupt Capacity: Built to handle fault conditions effectively in demanding environments.
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125 A Frame Size: Compact design that maintains strength and reliability in protection applications.
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Bolt-On Connection: Simplifies installation in control panels and switchgear assemblies.
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Standards Compliance: Meets UL, CSA, NOM, and IEC requirements for safe and certified operation.
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No Lugs Supplied: Allows flexible termination methods based on installation needs.
The HEM3M070 delivers the reliability and precision required for protecting industrial motor circuits from short-circuit damage.
