Contact Blocks & Light Blocks

Contact Blocks
A contact block is an electrical circuit connector that is used to turn on (make) or turn off (break) an electrical circuit. Contact blocks are commonly found connected to switches, relays and circuit breakers, once these devices are active the contact block allows current to flow and complete a circuit.
Types of Contact Block
Contact blocks are usually designed as an accessory to fit a specific device, therefore matching the correct contact block and device are essential. The contact blocks are available with a wide range of contact configurations that allow the main device to change a circuit in many different ways. Typical contact configurations available are:
• 1NO (One normally open contact)
• 1NC (One normally closed contact)
• 1NO/1NC (One normally open and one normally closed)
• 2NO (Two normally open contact)
• 2NC (Two normally closed contact)
• 2NO/2NC (Two normally open and two normally closed)

Light Blocks
Push button light blocks are an addon block that mount to the rear of a push button switch alongside the contact blocks to act as an indicator light. The light blocks are turned on when the push button is pressed and illuminate through the button head.
Types of Light Block
Light blocks are available in two types:
• LED - These light blocks feature a fixed bright LED that is designed to last the lifetime of the push button. LED light blocks are available in a variety of colours to match the button colour.
• Incandescent - These light blocks feature a changeable incandescent bulb. The bulbs produce a white light that shines through the button head to produce the required colour.

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Description Price Series Block Type Contact Configuration Illumination Colour Voltage Rating Illumination Type Terminal Type Body/Fixing Collar Included Current Rating LED Included For Use With Accessory Type
RS Stock No. 173-6843
Mfr. Part No.3SU1401-2BB60-3AA0
BrandSiemens
TWD389.00
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED - - 20mA - - -
RS Stock No. 221-812
Mfr. Part No.ZB6ZB51B
TWD997.00
Each
units
Harmony XB6 Contact & Light Block 1NO Yellow 12 → 24 V, 12 → 24V ac/dc LED Faston Yes - - - -
RS Stock No. 193-2215
Mfr. Part No.3SU1401-2BB40-3AA2
BrandSiemens
TWD1,010.00
Each
units
SIRIUS ACT - - Green - LED - - 20mA Yes - -
RS Stock No. 193-5203
Mfr. Part No.3SU1501-1AG30-1FA0
BrandSiemens
TWD794.00
Each
units
SIRIUS ACT Contact Block - - 6 ... 24V LED Screw - - Yes - -
RS Stock No. 222-196
Mfr. Part No.ZB6ZB31B
TWD894.00
Each
units
Harmony XB6 Contact & Light Block 1NO Green 12 → 24V LED Faston Yes - - - -
RS Stock No. 422-8836
Mfr. Part No.ZB6Z2B
TWD470.00
Each
units
Harmony XB6 Contact Block 1NC - - - Faston Yes - - - -
RS Stock No. 187-8958
Mfr. Part No.LPXLPM5
BrandLovato
TWD356.00
Each
units
LPXLP Light Block - - 185 → 265V ac LED Screw - 4mA Yes - -
RS Stock No. 817-4881
Mfr. Part No.ZB5AVG1
TWD1,863.00
Each
units
Harmony XB5 Light Block - - 110 → 120V ac LED Screw Yes - Yes - -
RS Stock No. 193-4830
Mfr. Part No.3SU1401-1BB50-3AA2
BrandSiemens
TWD970.00
Each
units
SIRIUS ACT - - Blue - LED - - 20mA Yes - -
New
RS Stock No. 212-4907
Mfr. Part No.ZB4BV18B6
TWD1,060.00
Each
units
ZB4 Light Block - Blue 24V LED Screw - - - - -
RS Stock No. 847-5014
Mfr. Part No.107940 & M22-CK11
BrandEaton
TWD550.00
Each
units
M22 Contact Block NC+NO - 220 V dc, 240V ac - - Yes 4A - - -
New
RS Stock No. 212-4937
Mfr. Part No.ZB6EG0B
TWD107.60
Each (In a Pack of 5)
units
XB5 Light Block Faston connectors 2.8 x 0.5 mm - 120V - - - - - - -
RS Stock No. 553-927
Mfr. Part No.ZBVM35
TWD2,253.00
Each
units
Harmony XB Light Block - Green 230V LED Screw Clamp No - Yes - -
RS Stock No. 168-2860
Mfr. Part No.XW1E-BV404MFRH-EMO
BrandIdec
TWD1,209.00
Each
units
XW Contact Block 4NC - - - Screw - 10A - - -
RS Stock No. 757-8941
Mfr. Part No.1SFA611621R1011 MLBL-01R
BrandABB
TWD376.00
Each
units
ABB Modular Light Block - - 24V LED - No - Yes - -
RS Stock No. 874-2181
Mfr. Part No.3SU1501-1AG40-1BA0
BrandSiemens
TWD486.00
Each
units
SIRIUS ACT Contact & Light Block 1NO - 6 → 24V ac/dc LED Screw Yes 6A Yes - -
RS Stock No. 188-1176
BrandRS PRO
TWD207.00
Each
units
- Light Block - - 12V ac/dc LED - - - Yes - -
RS Stock No. 169-7099
Mfr. Part No.45-320.1N46
BrandEAO
TWD444.00
Each
units
Series 45 Light Block - White 24V ac/dc LED - - - - - -
New
RS Stock No. 213-3568
Mfr. Part No.CW-CN
BrandIdec
TWD50.00
Each
units
CW-CN Contact Block - Yellow - - - - - - - -
RS Stock No. 193-2534
Mfr. Part No.3SU1401-1BH00-3AA0
BrandSiemens
TWD794.00
Each
units
SIRIUS ACT - - - - LED - - 20mA Yes - -