Eaton H1025 Overload Relay Heater Element

Product Description

The EATON H1025 is a thermal overload relay heater element designed to protect motors and electrical loads from sustained overcurrent conditions. It functions as a sacrificial sensing component inside a compatible overload relay assembly, responding to excess current by generating heat proportional to load current, which trips the relay mechanism before damage occurs to the motor winding or downstream equipment. Licensed electricians and industrial maintenance technicians install this component as part of motor starter and contactor assemblies in both commercial and industrial electrical systems.

The H1025 heater element is sized for specific full-load amperage ranges and is matched to the overload relay housing by heater selection charts provided by EATON. Typical installation scenarios include motor control centers, panel-mounted starters, and combination starter units where motor branch-circuit protection is required. It is suited for use in Type ST, BNC, and LT overload relay configurations, covering a broad range of motor control applications.

Key Features

• Thermal heater element sized for precise overcurrent trip response
• Compatible with Type ST, BNC, and LT overload relay housings
• Provides motor overload protection proportional to actual current draw
• Lightweight construction at approximately 0.01 pounds for easy handling during replacement
• Drop-in replacement form factor for field serviceability

Compatibility

Designed for use with EATON Type ST, BNC, and LT overload relay assemblies. Consult the EATON heater selection chart to confirm the correct heater element for the motor full-load amperage and relay series in the application.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NFPA 70 (NEC) and applicable local codes. De-energize and lock out the motor starter and verify absence of voltage before replacing any heater element. Confirm the heater element rating matches the motor full-load amperage using the manufacturer heater selection table before installation. Do not operate the overload relay with a missing or incorrect heater element installed.

Technical Specifications

• Type: ST / BNC / LT Overload Heater Element
• Weight: 0.01 pounds
• UPC: 78211321259

Standard Information

• Brand: EATON
• Manufacturer Part Number: H1025