This Product Selection Guide contains information to help select products in the Terminal Blocks - Specialized category on DigiKey.com
Specialized Terminal Blocks are devices used to join conductors to each other and are attached to a metal rail or channel. The characteristics are mounting type, number of positions, number of levels, terminal width, termination style, current IEC, voltage IEC, current UL, voltage UL, and wire gauge. The number of positions range from 1 to 960 and the number of levels range from 1 to 16.
SelectionCharacteristics
Type: Indicates the style and configuration of the device.
Mounting Type: Indicates how the device is attached.
Number of Positions: Indicates the number of distinct conductors presented at a connector’s mating interface and the number of electrical contact points present within a connector.
Number of Levels: Indicates the number of rows of contact positions incorporated in a device, called “levels” in reference to the rows’ varying distance from the mounting surface.
Terminal - Width: Describes a terminal block dimension that is typically perpendicular to the axis of wire entry.
Termination Style: Selection of termination style used to connect the device to a system, such as bolt and nut, push in, or stud.
Current - IEC: The rated operational current carrying capacity of a device according to standards established by the International Electrotechnical Commission.
Voltage - IEC: The rated maximum working voltage of a device according to standards established by the Internation Electrotechnical Commission.
Current - UL: Indicates a device’s maximum continuous current rating, per standards established by Underwriters Laboratories.
Voltage - UL: The rated maximum working voltage of a device, per standards established by Underwriters Laboratories.
Wire Gauge or Range - AWG: The wire size or size range with which a product is designed for use, expressed in terms of American Wire Gauge.
Wire Gauge or Range - mm²: The wire size or size range with which a product is designed for use, expressed in terms of cross-sectional area in square millimeters.
Features: These are different capabilities or properties of the device such as angled, diode, or LED.
Housing Color: The dominant color of the housing of the device.
ProductExamples
| MFR PART # | 1780850000 |
|---|---|
| DIGIKEY PART # | 281-4755-ND |
| MANUFACTURER | Weidmüller |
| DESCRIPTION | 1 Position Terminal Block Beige Post - Single 17.8mm |
| DATASHEET | Click Here |
| MFR PART # | 3270157 |
|---|---|
| DIGIKEY PART # | 277-11747-ND |
| MANUFACTURER | Phoenix Contact |
| DESCRIPTION | 16 Position Terminal Block Gray Marshalling Connector 8.3mm |
| DATASHEET | Click Here |
| MFR PART # | 264-701 |
|---|---|
| DIGIKEY PART # | 2946-264-701-ND |
| MANUFACTURER | WAGO Corporation |
| DESCRIPTION | 2 Position Terminal Block Gray Middle 6.0mm |
| DATASHEET | Click Here |
| MFR PART # | 2016066163 |
|---|---|
| DIGIKEY PART # | WM17289-ND |
| MANUFACTURER | Molex |
| DESCRIPTION | 3 Position Terminal Block Gray Universal Clamp 49.5mm |
| DATASHEET | Click Here |