Terminology:

Bounce time: The time from the first to the last closing or opening of a relay contact.

Contact configurations:

Make contact	Single Pole Single Throw Normally Open SPST-NO
Break contact	Single Pole Single Throw Normally Closed (SPST-NC)
Changeover contact	Single Pole Double Throw (SPDT)
Twin make contact	Single Pole Single Throw Normally Open (SPST-NO Double Make)
Twin break contact	Single Pole Single Throw Normally Closed (SPST-NC Double Break)
Bridging make contact	Single Pole Single Throw Normally Open (SPST-NO Bridge)

In a relay contact configuration, the three most frequent relay configurations are also known as Form A, Form B, and Form C. A normally open contact relay configuration is known as Form A. Form B contact relay configuration is known as a normally closed contact. Changeover contacts are also known as Form C.

Current Overload Protection: A feature designed into the relay to protect the relay against excessive current overload. The Overload Protection feature caused the relay to turn off immediately.

Electromechanical Relay: A power relay where the switching function of the electrical circuit results from the movement of mechanical parts. For more information about electromechanical relays, Click Here.

Dielectric Strength: The breakdown voltage rating between input and output terminals.

Dustproof Relay: A relay to protect against dust penetration.

Electro-Magnetic Interference (EMI): Electro-magnetic interference.

Hermetically Sealed Relay: The highest protected type of a sealed relay.

Open Relay: A relay without a protective case.

Operating Power: Coil power at which the relay operates.

Power Relay: A relay whose output circuit closes and opens depending on application of the electrical circuit.

Plug-in Relay: A relay that is held in the socket by a flat plug, creating contact.

Power Dissipation: The maximum average power dissipated by a Solid State Relay for a given load current.

Print Relay: A relay for soldering onto a printed circuit board.

Reed Relay: A type of relay similar to an electromechanical relay. For more information about reed relay, Click Here.

Rated Current: The standard value the relay is designed for.

Sealed Relay: A relay which is sealed against the penetration certain liquids. A sealing test is done in a water bath to determine the level of the seal.
  The various different types of Sealed relays include: relays used in Printed Circuit Board assemblies suitable for solder baths, followed by relays used in PCB assembly with an ultrasonic wash ; thirdly there are hermetically sealed relays which offer the highest level of protection within the Sealed Relay category.

Solder Relay: A relay with single solder terminals for wires.

SMD Relay: A Surface-mount-device relay.

Solid State Relay (SSR): A relay whose functions are achieved by means of electronic components without moving parts. For more information about solid state relays, Click Here.

Switching current: Current that can switch a relay contact on and off

Temperature Case: The temperature at a specified point on the relay which is used to evaluate the current capabilities of the relay

Aerolocator.com has sellers who have inventory from the following relay manufacturers:

• Allied Controls
• American Zettler
• Aromat
• Babcock
• Communication Instruments Inc. (CII)
• Coto
• CP Clare
• Crydom
• Cutler Hammer
• Deutsch
• Electronic Specialty
• Genicom
• Hamlin
• Hartman
• Hasco
• Hi-G
• Leach
• Magnecraft
• Midtek
• Omron
• Potter & Brumfield (P & B)
• Struthers Dunn
• Teledyne
• Tyco

For more information on How RelaysWork, Click Here.

For more information on Military Relays, Click Here.

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