Overload relays prevent an electric motor from drawing too much current and overheating; includes thermal and solid state overload types

Motor starters and contactors are motor-starting devices. They combine a contactor with overload protection and are designed for starting AC or DC motors

KVA meters measure the apparent power of AC devices in kilovolt-amperes (KVA). Apparent power is the combination of a circuit’s true power and reactive power.

Electrical contactors are electrical devices used to switch high power in power circuits. Unlike relays, contactors are normally directly connected to the load (current carrying) circuit.

Electrical current sensors measure AC and/or DC current levels. They receive current inputs and provide outputs as analog voltage signals, analog current levels, switches, or audible signals.

Electrical power sensors are used to measure electric power.

Panelboards and switchgear are electrical distribution devices that convert incoming electrical power into several smaller circuits and provide overload protection in the form of fuses or circuit breakers

Circuit breakers are mechanical switching devices capable of breaking currents under specified abnormal circuit conditions.

Solid state power controllers (SSPC) are semiconductor devices that control power (voltage and/or current) supplied to a load. They perform supervisory and diagnostic functions in order to identify overload conditions and prevent short circuits

DC motor starters combine a controller (most often a contactor) with overload protection, allowing a motor or motor-controlled equipment to be turned on and off

Torque limiters and slip clutches automatically slip or disengage the clutch at a predetermined torque.

Protective relays and monitoring relays detect or monitor for abnormal power system conditions.

Thermal cutoffs and thermal protectors are nonresetting, thermally sensitive devices designed to protect domestic electrical appliances and industrial equipment from fire. They are sometimes described as thermal one-shot fuses.

AC motor starters are used to turn-on and turn-off electric motors and motor-controlled equipment. They use solid-state or electromechanical technologies, and are designed for single-phase or three-phase motors.

Gas springs provide controlled motion and speed for elements, such as lids and doors, that open and close.