Thermal Overload Heater

Motor overload relays and thermal units help prevent motor damage and extend motor life.

Thermal overload heater. 5hp 1 phase 230v definite purpose motor starter for electric motor from square d model 8911dpsg32v09 8911dpso32v09 4 2 out of 5 stars 16. Nema 12 rated switches are protected from oil coolant dripping. 600 only type w class 20 type wl class 30 description overload relay class designation united states industry standards nema ics 2 part 4 designate an overload relay by a class number indicating the maximum time in. New square d thermal overload heater element unit b45 or b 45 5 0 out of 5 stars 2.

Combine a switch with a thermal overload element to build a starter that can handle high current rated motors. Manual motor protectors can keep equipment from overheating and overloading. Thermal overload elements shut motors off if current exceeds the full load current rating. Thermal units are for use in motor starters to help provide motor protection up to 266 full load amps.

Heater table number is found in the column under the type of overload and phase. Thermal overload heaters allen bradley cutler hammer general electric siemens ite square d westinghouse. If motor amps are not known an approximate value may be found on. Get it as soon as mon oct 5.

Refer to the specified table and use control size and motor amps to select the heater code number. Thermal units are rated in amperes and are selected on the basis of motor full load current not horsepower. Iec overload relays help adjust the maximum current a motor is allowed to draw. All are housed in a durable steel enclosure.

Special offers and product promotions. Need help finding the right renewal part. More buying choices 4 59 6 used new offers new square d thermal overload heater element unit b70 or b 70. Find heater table number below using the product class type of enclosure and control size.

Three elements are required. New square d thermal overload heater element unit b17 5 or b 17 5. More renewal parts overload relays auxiliaries. Thermal overload heaters contact kits heater accessories aux.

They re also known as nema starters. Non compensated bimetallic bimetallic thermal overload relays employ a u shape bimetal strip associated with a current carrying heater coil when an overload occurs the. Contacts aux contacts contact kits heater accessories overload heaters shop online shopping. Thermal overload heaters.

5 0 out of 5 stars 5.