This Product Selection Guide contains information to help select products in the Contactors (Electromechanical) category on DigiKey.com
Contactors (Electromechanical) are a device that turns a large load on or off using a smaller control signal.
SelectionCharacteristics
Mounting Type: Indicates how the device is attached.
Coil Voltage: The nominal voltage that must be applied to a relay’s control coil to actuate the device.
Contact Form: Describes the contact closures provided by a relay or relay-output device, in terms of the number of independent circuits that are actuated in parallel, the number of contact positions available for each, and their default states. For more information see Switch Basics, Examples of Pole and Throw
Contact Rating (Current): Typically the maximum amount of current that a relay’s contacts are rated to interrupt when switching a resistive load. Ratings may differ for reactive loads and when switching AC or DC current.
Switching Voltage: The voltage that a relay’s output contacts are rated to interrupt.
Features: These are different capabilities or properties of the device such as a diode or test button.
Termination Style: Selection of termination style used to connect the device to a system, such as PC pins, screw terminals, or wire leads.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and/or other system components.
Must Operate Voltage: The minimum voltage needed to energize the coil.
Must Release Voltage: The maximum applied voltage at which a relay must return to an inactive state.
ProductExamples
| MFR PART # | B88269X3330C011 |
|---|---|
| DIGI-KEY PART # | 495-B88269X3330C011-ND |
| MANUFACTURER | EPCOS - TDK Electronics |
| DESCRIPTION | Component Mount TO-18 Circular 0.060" (1.52mm) White |
| DATASHEET | Click Here |
| MFR PART # | 5-1618388-8 |
|---|---|
| DIGI-KEY PART # | A122275-ND |
| MANUFACTURER | TE Connectivity Aerospace, Defense and Marine |
| DESCRIPTION | Component Mount TO-18 Circular 0.060" (1.52mm) White |
| DATASHEET | Click Here |
| MFR PART # | 22.32.0.024.1320 |
|---|---|
| DIGI-KEY PART # | 2066-22.32.0.024.1320-ND |
| MANUFACTURER | Finder Relays, Inc. |
| DESCRIPTION | Component Mount TO-18 Circular 0.060" (1.52mm) White |
| DATASHEET | Click Here |
SchematicSymbol
Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.
MediaLinks
Videos
How to Choose a Relay - Another Teaching Moment | DigiKey
Relay Basics - Another Teaching Moment | DigiKey Electronics | DigiKey
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