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 Block Type Contact Configuration Series Illumination Colour Voltage Rating Illumination Type Terminal Type Body/Fixing Collar Included Current Rating LED Included For Use With Priced to Clear Accessory Type
RS Stock No. 330-9697
Mfr. Part No.ZB4BVM1
£18.11
Each
Units
Light Block - Harmony XB4 - 230 → 240V LED Screw Yes - Yes - - -
RS Stock No. 330-9619
Mfr. Part No.ZB4BVB5
£9.30
Each
Units
Light Block - Harmony XB4 - 24V LED Screw Yes - Yes - - -
RS Stock No. 610-2865
Mfr. Part No.ZBVBG1
£11.41
Each
Units
Light Block - Harmony XB - 24 → 120V LED Screw No - - - - -
RS Stock No. 610-2972
Mfr. Part No.ZBVM6
£15.41
Each
Units
Light Block - Harmony XB - 230V LED Screw No - Yes - - -
RS Stock No. 610-2916
Mfr. Part No.ZBVG4
£10.04
Each
Units
Light Block - Harmony XB Red - LED Screw No - - - - -
RS Stock No. 351-3789
Mfr. Part No.9001KA1
£14.85
Each
Units
Contact Block 1CO Harmony 9001K - 250V - Screw Clamp No 3A No - - -
RS Stock No. 330-9899
Mfr. Part No.ZB4BW0B61
£13.43
Each
Units
Contact & Light Block 1NO Harmony XB4 - 24V ac/dc LED Screw Yes 10A Yes - - -
RS Stock No. 610-2786
Mfr. Part No.ZBE203
£7.86
Each
Units
Contact Block 2NO Harmony XB - - - Screw No - - - - -
RS Stock No. 511-8386
Mfr. Part No.800F-BX10
£3.36
Each
Units
Contact Block 1NO 800F - 600V - Screw No - - - - -
RS Stock No. 330-9669
Mfr. Part No.ZB4BVG4
£12.30
Each
Units
Light Block - Harmony XB4 - 110 → 120V LED Screw Yes - Yes - - -
RS Stock No. 746-8967
Mfr. Part No.ZBE1016P
£19.25
Each
Units
- - Harmony XB - - - - - - - - - -
RS Stock No. 399-3731
Mfr. Part No.216563 & M22-LED230-W
BrandEaton
£11.53
Each
Units
Light Block - M22 - 85 → 264V ac LED Screw No 15mA Yes - - -
RS Stock No. 610-3004
Mfr. Part No.ZBZVM
£8.08
Each
Units
- - Harmony XB - - - - - - - - - -
RS Stock No. 330-9647
Mfr. Part No.ZB4BVG1
£12.25
Each
Units
Light Block - Harmony XB4 - 110 → 120V LED Screw Yes - Yes - - -
RS Stock No. 610-2887
Mfr. Part No.ZBVBG4
£11.31
Each
Units
Light Block - Harmony XB - 24 → 120V LED Screw No - - - - -
RS Stock No. 330-9704
Mfr. Part No.ZB4BVM3
£17.70
Each
Units
Light Block - Harmony XB4 - 230 → 240V LED Screw Yes - Yes - - -
RS Stock No. 399-3646
Mfr. Part No.216558 & M22-LED-R
BrandEaton
£7.77
Each
Units
Light Block - M22 - 12 → 30V ac/dc LED Screw No 15mA Yes - - -
RS Stock No. 610-2922
Mfr. Part No.ZBVG5
£10.13
Each
Units
Light Block - Harmony XB - - LED Screw No - - - - -
RS Stock No. 610-2871
Mfr. Part No.ZBVBG3
£11.41
Each
Units
Light Block - Harmony XB - 24 → 120V LED Screw No - - - - -
RS Stock No. 528-6221
Mfr. Part No.1SFA611610R2010 MCB-01B
BrandABB
£4.37
Each
Units
Contact Block 1NC ABB Modular - - - - No - - - - -