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. 610-2938
Mfr. Part No.ZBVM1
£15.34
Each
Units
Light Block - Harmony XB - 230V LED Screw No - Yes - - -
RS Stock No. 260-104
Mfr. Part No.33E10
BrandBACO
£15.91
1 Pack of 5
Pack(s)
Contact Block 1NO BACO - 600V - Screw No 10A - - - -
RS Stock No. 610-2837
Mfr. Part No.ZBVB4
£6.93
Each
Units
Light Block - Harmony XB - 24V LED Screw No - - - - -
RS Stock No. 331-0192
Mfr. Part No.ZB4BZ105
£9.73
Each
Units
Contact Block 1NO 1NC Harmony XB4 - - - Screw Yes 10A - - - -
RS Stock No. 330-9596
Mfr. Part No.ZB4BVB3
£9.03
Each
Units
Light Block - Harmony XB4 - 24V LED Screw Yes - Yes - - -
RS Stock No. 609-6827
Mfr. Part No.XENG1191
£21.83
Each
Units
Contact Block 1 NC, 2NO XENG - - - - - 10A - - - -
RS Stock No. 330-9580
Mfr. Part No.ZB4BVB1
£9.03
Each
Units
Light Block - Harmony XB4 - 24V LED Screw Yes - Yes - - -
RS Stock No. 330-9603
Mfr. Part No.ZB4BVB4
£9.05
Each
Units
Light Block - Harmony XB4 - 24V LED Screw Yes - Yes - - -
RS Stock No. 331-0186
Mfr. Part No.ZB4BZ103
£9.73
Each
Units
Contact Block 2NO Harmony XB4 - 600V - Screw Yes 10A - - - -
RS Stock No. 511-8364
Mfr. Part No.800F-X01S
£6.90
Each
Units
Contact Block 1NC 800F - 690V - Screw No - - - - -
RS Stock No. 342-2784
Mfr. Part No.ZB4BZ104
£9.73
Each
Units
Contact Block 2NC Harmony XB4 - 600V - Screw Yes 10A - - - -
RS Stock No. 610-2859
Mfr. Part No.ZBVB6
£6.93
Each
Units
Light Block - Harmony XB - 24V LED Screw No - - - - -
RS Stock No. 399-3630
Mfr. Part No.216557 & M22-LED-W
BrandEaton
£7.77
Each
Units
Light Block - RMQ Titan - 12 →30V ac/dc LED Screw No 15mA Yes - - -
RS Stock No. 610-2900
Mfr. Part No.ZBVG3
£10.09
Each
Units
Light Block - Harmony XB - 110 → 120V LED Screw No - - - - -
RS Stock No. 610-2950
Mfr. Part No.ZBVM4
£15.27
Each
Units
Light Block - Harmony XB - 230V LED Screw No - Yes - - -
RS Stock No. 610-3133
Mfr. Part No.ZBV6
£4.25
Each
Units
Light Block - Harmony XB - - Incandescent Screw No - - - - -
RS Stock No. 511-8336
Mfr. Part No.800F-PX10
£4.78
Each
Units
Contact Block 1NO 800F - 600V - Screw Yes - - - - -
RS Stock No. 331-0445
Mfr. Part No.ZB5AZ101
£5.22
Each
Units
Contact Block 1NO Harmony XB5 - - - Screw Yes - - - - -
RS Stock No. 874-2210
Mfr. Part No.3SU1400-1AA10-1BA0
BrandSiemens
£3.65
Each
Units
Contact Block 1NO SIRIUS ACT - 5 → 500V ac/dc - Screw No 10A No - - -
RS Stock No. 511-8370
Mfr. Part No.800F-NX-BX01
£3.36
Each
Units
Contact Block 1NC 800F - 600V - Screw No - - - - -