Screw Terminals

A screw terminal is an electrical connector made from plated brass that enables wires to be connected directly to a PCB and consists of a metal frame and a screw. The screw terminal is secured to the PCB using mounting legs which are snapped into holes on the PCB and soldered into place. Pre-stripped wire is wrapped under the head of the screw and the screw is tightened down using a screwdriver making a secure electrical connection between the wire and the metal frame. Wires that are terminated with connectors such as spade or ring terminals are pushed into place over the screw. Screw terminals are available with a right angle or vertical mounting body orientation, different body platings and to suit a wide range of current ratings
Some screw terminals feature colour coded screws for ease of identification and to aid trouble shooting.


Benefits of Screw Terminals


• Simple to use and easy to snap into place. Only basic hand tools required
• Allow high density wire connections to PCB
• Low cost, eliminate the need for a mating connector
• When properly tightened provide an electrically secure connection
• Can be reused in the field allowing for the replacement of wires or equipment
• Can be used with solid, stranded and pre-terminated wire
• Kinked leg versions for extra retention on the PCB


Where are screw terminals used?


PCB screw terminals allow electrical signals and current to flow to and from PCBs and electrical equipment.


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Description Price Orientation Wire Size Current Rating Minimum Wire Size AWG Snap-In Maximum Wire Size AWG Number of Legs Body Material Body Plating Colour Maximum Wire Size Minimum Wire Size
RS Stock No. 122-4953
Mfr. Part No.7460553
MYR17.65
Each
units
Vertical - 240A - - - 10 - Tin - - -
RS Stock No. 162-1292
Mfr. Part No.7460553
MYR16.548
Each (In a Box of 100)
units
Vertical - 240A - - - 10 - Tin - - -
RS Stock No. 122-4967
Mfr. Part No.7461147
MYR11.16
Each
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 163-1882
Mfr. Part No.7461147
MYR8.232
Each (In a Box of 250)
units
Vertical - 180A - - - 16 - Tin - - -
RS Stock No. 917-5327
Mfr. Part No.225677
BrandERNI
MYR21.756
Each (In a Pack of 5)
units
Vertical - 160A - - - 16 - Tin - - -
RS Stock No. 122-4951
Mfr. Part No.7460305
MYR10.43
Each
units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 122-4960
Mfr. Part No.7461090
MYR41.92
Each
units
Vertical - 340A - - - 20 - Tin - - -
RS Stock No. 718-9422
Mfr. Part No.167892-2
MYR11.34
Each
units
Straight - 40A - - - - - - - - -
RS Stock No. 178-8752
BrandRS PRO
MYR0.139
Each (In a Bag of 100)
units
Straight 3 x 20 → 3 x 16 AWG - 3 x 20AWG - 3 x 16AWG - Thermoplastic - Blue - -
RS Stock No. 122-4985
Mfr. Part No.7461114
MYR39.06
Each
units
Right Angle - 250A - - - 25 - Tin - - -
RS Stock No. 203-2512
Mfr. Part No.3RK1902-4BA00-5AA0
BrandSiemens
MYR78.81
Each
units
Straight 20 → 30 AWG 4A 30AWG Yes 20AWG 5 Polyamide - - - -
RS Stock No. 917-5355
Mfr. Part No.225686
BrandERNI
MYR39.108
Each (In a Pack of 5)
units
Vertical - 360A - - - 36 - Tin - - -
RS Stock No. 177-2738
Mfr. Part No.746600330R
MYR12.47
Each
units
Horizontal - 50A - - - - Brass Tin - - -
RS Stock No. 122-4991
Mfr. Part No.7461096
MYR13.92
Each
units
Vertical - 130A - - - 9 - Tin - - -
RS Stock No. 481-3973
Mfr. Part No.8191-2
BrandKeystone
MYR3.147
Each (In a Pack of 10)
units
Straight 22 → 14 AWG 15A - - - 4 Brass Nickel Red 14AWG 22AWG
RS Stock No. 178-8750
BrandRS PRO
MYR0.095
Each (In a Bag of 100)
units
Straight 1 x 20 AWG, 1 x 22 → 2 x 16 AWG - 1 x 20 AWG, 1 x 22AWG - 2 x 16AWG - Thermoplastic - Grey - -
RS Stock No. 162-1758
Mfr. Part No.7461082
MYR10.49
Each (In a Box of 500)
units
Straight - - - - - - Brass Tin - - -
RS Stock No. 122-5139
Mfr. Part No.7466003R
MYR10.14
Each
units
Vertical - 50A - - - - - Tin - - -
RS Stock No. 163-1856
Mfr. Part No.7461084
MYR12.999
Each (In a Box of 150)
units
Vertical - 160A - - - 8 - Tin - - -
RS Stock No. 122-4956
Mfr. Part No.7461084
MYR15.91
Each
units
Vertical - 160A - - - 8 - Tin - - -