U.S. Ground
Parcel Shipments
See Shipping Policy

Starter Thermal Elements

Overload relays protect motors, controllers and branch-circuit conductors against excessive heating due to prolonged motor overcurrents. Protection of the motor, and the other branch-circuit components, from higher currents is a function of the branch-circuit fuses, circuit breakers or motor short-circuit protectors.

Thermal overload relays are very effective in providing motor running overcurrent protection. They will produce a shorter trip time at a higher current, similar to the way a motor will reach its temperature limit in a shorter time at a higher current. In a high ambient temperature, a thermal overload rely will trip at a lower current, allowing the motor to be used to its maximum capacity in its particular ambient temperature. Once tripped, the thermal overload relay will not reset until it has cooled, allowing the motor to cool before it can be re-started.

Schneider Electric melting alloy thermal overload relays allow the motor current to pass through a small heater winding. Under overload conditions, the heat causes a solder to melt causing a ratchet shell to spin free, opening the control circuit contacts. Bimetallic thermal overload relays utilize a U-shape bimetal strip associated with a current carrying heater coil. When an overload occurs, the heat will cause the bi-metal to deflect and operate a control circuit contact. Bimetallic overload relays are used where the controller is remote or difficult to reach. Melting alloy and bimetallic overload relays are designed to approximate the heat actually generated in the motor. As the motor temperature increases, so does the temperature of the thermal unit.

Products

Products Per Page: Sort By:
$101.66
Eaton FH92 - Used with A200 Starter Sizes 4, 3-Phase Only, A200 Heater, NEMA, Ambient 123-129A, Non-Comp 111-122A, Used with A200 Starter Sizes 4, 3-Phase Only, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH91 - Used with A200 Starter Sizes 4, 3-Phase Only, A200 Heater, NEMA, Ambient 111-122A, Non-Comp 100-110A, Used with A200 Starter Sizes 4, 3-Phase Only, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH87 - Used with A200 Starter Sizes 3 and 4, 3PH Only, A200 Heater, NEMA, Ambient 79-84A, Non-Comp 73-77A, Used with A200 Starter Sizes 3 and 4, 3PH Only, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH74 - Used with A200 Starter Sizes 3 and 4, 3PH Only, A200 Heater, NEMA, Ambient 23.0-25.2A, Non-Comp 21.2-23.2A, Used with A200 Starter Sizes 3 and 4, 3PH Only, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH69 - Used with A200 Starter
$101.66
Eaton FH49 - Used with Starter Sizes 1, and 2, A200/B100 Heater, NEMA, Ambient 19.9-21.7, 23.0-25.2A, Non-Comp 18.4-20.2, 22.0-23.9A, Used with Starter Sizes 1, and 2, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH47 - Used with Starter Sizes 0,1, and 2, A200/B100 Heater, NEMA, Ambient 19.0 20.8, 16.4-18.0A, Non-Comp 15.2-16.7, 18.4-20.0A, Used with Starter Sizes 0,1, and 2, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH43 - Used with Starter Sizes 0,1, and 2, A200/B100 Heater, NEMA, Ambient 11.4-12.4, 13.2-14.3A, Non-Comp 10.6-11.5, 12.8-14.0A, Used with Starter Sizes 0,1, and 2, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH31 - Used with Starter Sizes 0,1, and 2, A200/B100 Heater, NEMA, Ambient 3.74-4.07, 4.32-4.71A, Non-Comp 3.48-3.79, 4.23-4.61A, Used with Starter Sizes 0,1, and 2, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH25 - Used with Starter Sizes 0,1, and 2, A200/B100 Heater, NEMA, Ambient 2.16-2.35, 2.49-2.72A, Non-Comp 2.0-2.19, 2.44-2.67A, Used with Starter Sizes 0,1, and 2, Type A and B, Thermal and Fast Trip
$101.66
Eaton FH18 - Used with Starter Sizes 0,1, and 2, A200/B100 Heater, NEMA, Ambient 1.12-1.22, 1.29-1.41A, Non-Comp 1.14-1.25, 1.39-1.52A, Used with Starter Sizes 0,1, and 2, Type A and B, Thermal and Fast Trip