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Eaton Series G Molded Case Circuit Breaker Undervoltage Release Accessory
Model: EAT-UVR120APK
Eaton Series G Molded Case Circuit Breaker Undervoltage Release AccessoryThe Eaton Series G Molded Case Circuit Breaker Undervoltage Release Accessory is an internal trip mechanism designed for use...
Eaton
$967.54
Eaton Series G Motor Circuit Protector, Molded Case Circuit Breaker Accessory
The Eaton Series G Motor Circuit Protector is a molded case circuit breaker accessory engineered to deliver adjustable magnetic-only motor branch-circuit protection for industrial control panel applications. Built on the Frame J-K platform with three-pole construction, this device offers a magnetic trip range of 9-30 A and carries a voltage rating of 480 V (600 Y/347 V max), making it suitable for demanding commercial and industrial power distribution systems. Non-aluminum terminals and CSA-certified construction reinforce its reliability for professional installations that require dependable, code-aware short-circuit protection.
Key Features
- Magnetic Trip Range: Adjustable trip type covering 9-30 A for precise motor branch-circuit coordination.
- Three-Pole Design: Three-pole configuration for balanced protection across all phases of motor circuits.
- Frame Size: Frame J-K platform compatible with Eaton Series G molded case circuit breakers.
- Voltage Rating: Rated 480 V with a maximum voltage of 600 Y/347 V for versatile system compatibility.
- Terminal Material: Non-aluminum terminals for dependable, corrosion-resistant electrical connections.
- Compact Footprint: Measures 3 in wide by 6.5 in deep by 5.5 in high, sized for standard control panel layouts.
- Series G Platform: Part of the Eaton Series G circuit breaker family for consistent panel integration.
Certifications & Compliance
- CSA Certified
Technical Specifications
- Product Width: 3 in
- Magnetic Trip Range: 9-30 A
- Voltage Rating: 480 V
- Amperage Rating: 3 A
- Product Length/Depth: 6.5 in
- Product Height: 5.5 in
- Type: Motor circuit protector
- Number of Poles: Three-pole
- Terminal Material: Non-aluminum
- Series: Series G
- Frame Size: Frame J-K
- Voltage - Max: 600 Y/347 V
- Trip Type: Adjustable
- Certifications: CSA Certified
Typical Applications
- Industrial Control Panel Motor Protection
- Molded Case Circuit Breaker Upgrades and Retrofits
- Commercial and Industrial Electrical Installations
- Motor Branch-Circuit Short-Circuit Protection
- Series G Circuit Breaker Panel Assemblies
Why Eaton?
Eaton's Series G motor circuit protector combines an adjustable 9-30 A magnetic trip range, non-aluminum terminals, and CSA-certified construction to deliver dependable performance in demanding industrial environments. Its Frame J-K compatibility and three-pole design make it a trusted accessory for professionals who need code-aware, reliable motor branch-circuit protection in Eaton Series G breaker installations.
Manufacturer Resources
Product Specs
- Product Width:
- 3 in
- Magnetic Trip Range:
- 9-30 A
- Voltage Rating:
- 480V
- Amperage Rating:
- 3A
- Product Length/Depth:
- 6.5 in
- Product Height:
- 5.5 in
- Product Type:
- Motor Circuit Protector
- Number Of Poles:
- Three-pole
- Terminal Material:
- Non-aluminum
- Series:
- Series G
- Frame Size:
- Frame J-K
- Compliances:
- Contact Manufacturer
- Voltage - max:
- 600 Y/347 V
- Trip Type:
- Adjustable
- Certifications:
- CSA Certified
- Department:
- Electrical
- Configuration:
- 3-Pole
- Listing:
- CSA Certified
- Product Group:
- Circuit Protection
- Product Subgroup:
- Circuit Breakers
- Product Weight:
- 3 lb
- Product Length:
- 6.5 in
Eaton HMCPE003A0C – Frequently Asked Questions
1) Does the Eaton HMCPE003A0C motor circuit protector provide overload protection, or only short-circuit protection?
The HMCPE003A0C is a magnetic-only motor circuit protector. Its adjustable magnetic trip covers 9 to 30 A, which handles instantaneous short-circuit protection on the motor branch circuit. It does not give running overload protection, so the starter or panel still needs a separate overload relay sized to the motor. That is the normal arrangement in a combination motor controller.
2) What motor sizes does the 9-30 A magnetic trip range on the Eaton HMCPE003A0C cover?
The magnetic trip is field adjustable from 9 A up to 30 A, so the pickup point is set to clear motor inrush without nuisance tripping. The device itself is the 3 A frame rating in the HMCP series, and the setting you dial in has to be coordinated with the full load amps of the motor and the overload relay in the starter. If your motor's locked rotor current pushes the required instantaneous setting above 30 A, you need a higher rated HMCP.
3) Can I use an Eaton HMCPE003A0C on a 600V wye system?
Voltage rating is 480 V, with a maximum of 600Y/347 V. That means it can be applied on a solidly grounded wye system where line to neutral is 347 V, but not on a 600 V corner grounded delta or ungrounded 600 V system, where the full 600 V can appear across a single pole.
4) Will the HMCPE003A0C fit my Eaton Series G breaker panel or starter enclosure?
It is built on the Frame J-K platform in the Eaton Series G family, so it mounts where a Series G Frame J-K device is expected. Overall it is 3 in wide, 6.5 in deep and 5.5 in high, which is the number to check against the pan space and door clearance in your control panel or combination starter. It will not drop into a frame that was prepped for a different Eaton frame class.
5) Is the Eaton HMCPE003A0C three-phase, and can I use one pole for a single-phase motor?
Three-pole construction, intended to break all three phases of a three-phase motor circuit at once. It is sold and applied as a three-pole device, not as individual poles, so a single-phase application would still use the assembled three-pole protector with the unused pole idle rather than a split-off pole.
6) What wire can I land on the terminals of this Eaton motor circuit protector?
Terminals on the HMCPE003A0C are non-aluminum, so they are intended for copper conductors. If your feed to the starter is aluminum, you need a listed transition, either an AL-rated terminal kit or a copper pigtail with an AL/CU connector, rather than landing aluminum directly.
7) Is the Eaton Series G HMCPE003A0C approved for use in Canada?
It is CSA Certified, which is what an inspector in a Canadian industrial control panel will look for. For any other agency listing or specific code compliance on your project, the certification on record here is CSA.
8) Should I specify a motor circuit protector or a standard thermal magnetic breaker for a motor branch circuit?
A thermal magnetic breaker trips on both overload and short circuit, so it has to be oversized to ride through motor inrush, which blunts its short-circuit response. A magnetic-only device like this Eaton HMCP lets you set the instantaneous pickup, 9 to 30 A here, tight to the motor while the starter's overload relay handles the running overload. That combination gives closer coordination in a control panel. If there is no overload relay in the circuit, do not use a magnetic-only protector.
9) What is the exact Eaton part number for this three-pole 9-30 A motor circuit protector?
The catalog number is HMCPE003A0C, an Eaton Series G, Frame J-K, three-pole motor circuit protector with a 9-30 A adjustable magnetic trip rated 480 V.
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Does the Eaton HMCPE003A0C come with a warranty?
Absolutely. The Eaton HMCPE003A0C is backed by a manufacturer’s warranty.
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