Specification Guides

Specification Guides explain a range of products and services across the industrial world.
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Electromechanical Relays

Electromechanical relays are devices that complete or interrupt a circuit by physically moving electrical contacts into contact with each other.

High Voltage Relays

High voltage relays are used to transfer power for high voltage and high frequency applications. They are heavily insulated and consist of strong materials to increase contact life.

Motor Starters and Contactors

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

Protective Relays and Monitoring Relays

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

Reed Relays

Reed relays are electrically-operated switching devices that consist of two thin, magnetic strips (reeds) encapsulated in a glass envelope. They are used to switch industrial components such as solenoids, contactors and starter motors.

Relay Sockets

Relay sockets are devices that accept relays, electromechanical switches in which the variation of current in one electric circuit controls the flow of electricity in another circuit.

Safety Relays

Safety relays and control modules differ from conventional relays in that they have force-guided or positive-driven contacts.

Solid State Relays

Solid state relays (SSR) or semiconductor relays are semiconductor devices that can be used in place of mechanical relays to switch electricity to a load in many applications.

Thermal Overload Relays

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

Time Delay Relays

Time delay relays and solid state timers use solid state electronic devices to provide a time delay.