Eaton Hydraulic Magnetic Suppl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$166.81
Eaton Hydraulic Magnetic Supplementary Protector, IP20 Enclosure

Eaton Hydraulic Magnetic Supplementary Protector, IP20 Enclosure

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Model: SPHM1RM0015

In Stock (leaves warehouse same day if ordered before 3pm ET)

$166.81
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Eaton Hydraulic Magnetic Supplementary Protector, IP20 Enclosure

The Eaton Hydraulic Magnetic Supplementary Protector is engineered to deliver dependable circuit protection for equipment and control panel applications. Built with a medium time delay and an 18X inrush delay rating, this protector is designed to ride through momentary inrush currents from motors and transformers without nuisance tripping. It is rated for 50-60 Hz frequency systems and housed in an IP20 enclosure, making it a solid choice for panel-mounted supplementary protection in commercial and industrial electrical systems.

Key Features

  • Time Delay: Medium time delay setting provides controlled circuit interruption timing.
  • Inrush Delay: 18 X inrush delay rating helps prevent nuisance tripping caused by motor and transformer inrush currents.
  • Frequency Rating: 50-60 Hz frequency rating supports compatibility with standard AC power systems.
  • Enclosure: IP20 enclosure rating provides protection against solid foreign objects and accidental contact with live parts.
  • Hydraulic Magnetic Design: Hydraulic magnetic tripping mechanism offers consistent, temperature-stable performance compared to thermal-only designs.

Technical Specifications

  • Time Delay: Medium
  • Inrush Delay: 18 X
  • Frequency Rating: 50-60 Hz
  • Enclosure: IP20
  • Product Type: Electrical Component

Typical Applications

  • Supplementary Protection for Control Panels and Equipment
  • Motor and Transformer Circuit Protection
  • Industrial Machinery and Process Equipment
  • Commercial and Industrial Electrical Installations
  • Panel-Mounted Circuit Protection Systems

Why Eaton?

Eaton supplementary protectors combine hydraulic magnetic tripping technology with a compact IP20 enclosure to deliver consistent, reliable circuit protection for demanding electrical environments. With a medium time delay and 18 X inrush delay rating tuned for 50-60 Hz systems, this protector is built to support code-compliant, dependable performance for professional electrical installations. Choose Eaton for equipment protection you can count on in commercial and industrial settings.

Product Specs

Time Delay:
Medium
Inrush Delay:
18 X
Frequency Rating:
50-60 Hz
Configuration:
IP20
Product Type:
Supplementary Protector
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers

Eaton SPHM1RM0015 – Frequently Asked Questions

1) What amperage ratings does the Eaton SPHM supplementary protector come in?
The Eaton SPHM hydraulic magnetic supplementary protector is offered in 2.5, 5, 7.5, 10 and 15 amperes. Single-pole versions cover 5 A (SPHM1RM0005), 7.5 A (SPHM1RM07R5), 10 A (SPHM1RM0010) and 15 A (SPHM1RM0015). Three-pole versions are 2.5 A (SPHM3RM02R5) and 15 A (SPHM3RM0015). Pick the pole count to match the circuit first, then the amperage, since not every rating exists in both pole counts.
2) Can I use this Eaton supplementary protector as the main branch circuit breaker in a panelboard?
No. The SPHM is a supplementary protector, which means it protects equipment and internal control circuits downstream of a branch circuit that is already protected. It is not a branch circuit breaker and does not replace one. Use it inside a control panel or piece of machinery, fed from a properly sized branch circuit device.
3) Will this protector nuisance trip on motor or transformer inrush?
It is built to ride through it. The SPHM carries a medium time delay curve and an 18X inrush delay rating, so it tolerates a starting surge up to 18 times the handle rating for the delay period before tripping. That is the reason it gets specified ahead of motor starters, transformer primaries and switch-mode supplies where a fast-acting device would trip on every start.
4) Do I need the three-pole version or will single poles work for my three-phase load?
For a three-phase motor or transformer, use the three-pole SPHM, available as SPHM3RM02R5 at 2.5 A and SPHM3RM0015 at 15 A. The poles trip together, so a fault on one phase drops all three and you avoid single-phasing the load. Three separate single-pole units do not do that. Single poles are the right call for individual control circuits, 120 V loads and DC circuits within the ratings offered.
5) Does a hydraulic magnetic breaker hold its trip point in a hot control cabinet?
That is the main reason to pick one. The SPHM trips on a magnetic solenoid damped by a fluid-filled tube rather than a bimetal strip, so the trip point does not drift with ambient temperature the way a thermal breaker's does. In a cabinet that runs hot, or one mounted outdoors that swings from freezing to baking, the same device keeps the same curve. A thermal-magnetic device in that spot typically has to be derated.
6) Is this Eaton protector good for 50 Hz equipment being shipped overseas?
Yes. The SPHM is rated 50-60 Hz, so the same part works on 60 Hz North American power and 50 Hz export machinery. OEMs building panels for both markets can standardize on one device instead of stocking two.
7) What does the IP20 rating on this Eaton protector actually protect against?
IP20 means finger-safe against solid objects 12.5 mm and larger and no protection against water. In practice that makes the SPHM a device for the inside of an enclosure or control panel, where the terminals need to be touch-safe for a tech working live but the cabinet itself is doing the dust and moisture duty. Do not mount it in a wash-down area or an exposed outdoor location without a rated enclosure around it.
8) What amperage should I pick for a small control transformer circuit?
Size the SPHM to the continuous load, not the inrush, because the 18X inrush delay is already there to cover the magnetizing surge. Small control transformers and sensor buses usually land on the 2.5 A or 5 A units, while larger contactor coil banks and machine control circuits typically run 7.5 A or 10 A. The 15 A units are the top of the range in both single and three pole.
How fast can I get the Eaton SPHM1RM0015 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton SPHM1RM0015 come with a warranty?
Absolutely. The Eaton SPHM1RM0015 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton SPHM1RM0015?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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