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Eaton Series C Molded Case Motor Circuit Protector, Three-Pole
The Eaton Series C Molded Case Motor Circuit Protector is a three-pole motor circuit protector engineered to deliver dedicated short-circuit protection ahead of motor starters and controllers. Built on Eaton's Series C molded case platform with an adjustable magnetic trip range and a 600 V, 250 Vdc maximum voltage rating, this Eaton device pairs line and load terminals with non-aluminum terminal construction for dependable, code-compliant motor branch-circuit protection in commercial and industrial applications.
Key Features
- Type: Motor circuit protector designed to provide short-circuit-only protection for motor branch circuits, coordinated with a motor starter for overload protection.
- Magnetic Trip Range: Adjustable magnetic trip range allows the instantaneous trip point to be set to match motor inrush characteristics.
- Number of Poles: Three-pole configuration for use on three-phase motor circuits.
- Voltage Rating: Rated up to 600 V, 250 Vdc maximum for use across a wide range of motor circuit applications.
- Terminals: Line and load terminals constructed of non-aluminum material for reliable, long-lasting connections.
- Auxiliary Switch: Available with auxiliary switch options for remote status indication and circuit monitoring.
- Platform: Part of Eaton's Series C molded case circuit breaker platform.
- Compact Dimensions: Compact form factor for straightforward panel and enclosure fitment.
Certifications & Compliance
- CSA Certified
Technical Specifications
- Terminals: Line and load
- Type: Motor circuit protector
- Number of Poles: Three-pole
- Terminal Material: Non-aluminum
- Series: Series C
- Voltage - Max: 600 V, 250 Vdc
- Certifications: CSA Certified
Typical Applications
- Motor Branch-Circuit Short-Circuit Protection
- Three-Phase Motor Starter and Controller Coordination
- Commercial and Industrial Electrical Installations
- Motor Control Center (MCC) Assemblies
- Panelboard and Switchboard Motor Feeder Protection
Why Eaton?
Eaton's Series C molded case motor circuit protectors combine rugged molded case construction with non-aluminum line and load terminals and an adjustable magnetic trip range, giving electrical contractors the flexibility to precisely coordinate protection with motor characteristics. Backed by CSA certification and Eaton's manufacturer warranty, this device delivers the dependable, code-compliant performance professionals expect for demanding motor circuit protection tasks.
Variant Specifications
| Amperage | Model | SKU |
|---|---|---|
| 50A | HMCP050K2CA06 | HMCP050K2CA06 |
| 3-70A | Standard | HMCP070M2C |
Manufacturer Resources
Product Specs
- Department:
- Electrical
- Terminal Material:
- Non-aluminum
- Compliances:
- Contact Manufacturer
- Series:
- Series C
- Product Type:
- Motor Circuit Protector
- Number Of Poles:
- Three-pole
- Frame Size:
- Frame J-K
- Product Group:
- Circuit Protection
- Product Subgroup:
- Circuit Breakers
- Product Weight:
- 4.5 lb
Eaton HMCP070M2C – Frequently Asked Questions
1) Can an Eaton HMCP motor circuit protector be used as the only protection on a motor branch circuit?
No. The Eaton Series C HMCP is a motor circuit protector, which means it provides short-circuit-only protection. Overload protection has to come from the motor starter's overload relay downstream. Used alone it will not protect the motor from a sustained overload, so it is always applied as part of a listed starter/controller combination.
2) What is the difference between the HMCP050K2CA06 and the HMCP070M2C?
Both are three-pole Series C motor circuit protectors; the difference is the current rating and the trip adjustment. The HMCP050K2CA06 is the 50A device, and the HMCP070M2C covers a 3-70A range. Pick the one whose adjustable magnetic trip band brackets the locked-rotor inrush of the motor you are feeding.
3) Will an Eaton HMCP fit a Frame J or Frame K molded case cavity in a motor control center?
Yes. These Series C motor circuit protectors are built on the Frame J-K molded case frame, which is what determines the mounting footprint and the bucket or panel cavity it drops into. Confirm the MCC bucket or panelboard interior is prepped for a J-K frame before ordering.
4) Why does an HMCP have an adjustable magnetic trip instead of a fixed one?
Motor starting inrush can run several times full-load current, and a fixed instantaneous trip either nuisance-trips on start or sits too high to be useful. The Series C HMCP lets you set the instantaneous trip point to match the motor's inrush, so the protector rides through starting and still clears a genuine fault fast.
5) Can I land aluminum conductors on the lugs of an Eaton Series C HMCP?
The line and load terminals on these Series C motor circuit protectors are non-aluminum construction. That describes the terminal body material, not the conductor it accepts, so check the lug's own wire marking for AL/CU suitability before terminating aluminum feeders.
6) Is the Eaton Series C motor circuit protector approved for use in Canada?
The Series C HMCP is CSA Certified, which is the listing Canadian inspectors look for on motor branch-circuit devices.
7) Can I get remote status indication from an Eaton HMCP for a control panel?
Yes, the Series C motor circuit protector platform offers auxiliary switch options for remote status indication and circuit monitoring. That contact is what you wire back to a PLC input or pilot light to show breaker position, so specify the auxiliary switch at order time rather than trying to add it later.
8) Where do motor circuit protectors like the Eaton HMCP typically get installed?
They sit ahead of the starter or controller on the motor branch circuit. Common spots are motor control center buckets, panelboard and switchboard motor feeder positions, and combination starter enclosures in commercial and industrial plants. The three-pole build is for three-phase circuits.
How fast can I get the Eaton HMCP070M2C delivered?
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Does the Eaton HMCP070M2C come with a warranty?
Absolutely. The Eaton HMCP070M2C is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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