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Hazardous-Location Combination Starters

Available2 products
Hazardous-location combination motor starters provide control of electrical connections in environments where the possibility of flammable gases, vapors, or liquids, ignitable fibers or flyings, or combustible dust may exist under normal and abnormal conditions. They have location ratings that classify their designated operating environment and must be mated with compatible, hazardous-location devices to comply with safety standards. Combination motor starters open and close high-current circuits and help protect downstream connections like motors, machinery, and electrical systems from damage caused by overheating, low voltage, and overcurrent. They are electrically operated motor controllers that combine contactors, overload relays, and short circuit protection in the form of circuit breakers or fused disconnect switches inside a protective enclosure.
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Circuit Breaker Starters with Thermal Overloads

Circuit Breaker Starters with Thermal Overloads

These hazardous-location combination motor starters with thermal overloads have circuit breakers that trip if the connection experiences an electrical overload or short. They shut off power immediately if there is an electrical malfunction to protect high-current industrial equipment and operators. Breakers are manually reset after they trip to resume normal operation. Thermal overloads prompt motor starters to break electrical connections with downstream equipment once a set temperature is reached to protect connected loads from overheating and causing damage. They contain either bimetallic strips or melting alloy solder materials. When the current exceeds a predetermined threshold and temperatures rise, the material bends or liquefies, causing the thermal unit to break the circuit and cause the motor starter to break its power contacts. As the materials cool down, they will return to their normally closed position and the circuit can be reset automatically or manually.

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