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 Priced to Clear For Use With Accessory Type
RS Stock No. 331-0186
Mfr. Part No.ZB4BZ103
£9.59
Each
Units
Contact Block 2NO Harmony XB4 - 600 V - Screw Yes 10 A - - - -
RS Stock No. 511-8364
Mfr. Part No.800F-X01S
£6.57
Each
Units
Contact Block 1NC 800F - 690 V - Screw No - - - - -
RS Stock No. 342-2784
Mfr. Part No.ZB4BZ104
£9.59
Each
Units
Contact Block 2NC Harmony XB4 - 600 V - Screw Yes 10 A - - - -
RS Stock No. 610-2859
Mfr. Part No.ZBVB6
£6.83
Each
Units
Light Block - Harmony XB Blue 24 V LED Screw No - - - - -
RS Stock No. 399-3630
Mfr. Part No.M22-LED-W
BrandEaton
£7.50
Each
Units
Light Block - RMQ Titan White 12 →30 V ac/dc LED Screw No 15 mA Yes - - -
RS Stock No. 610-2900
Mfr. Part No.ZBVG3
£9.88
Each
Units
Light Block - Harmony XB Green 110 → 120 V LED Screw No - - - - -
RS Stock No. 610-2950
Mfr. Part No.ZBVM4
£15.04
Each
Units
Light Block - Harmony XB Red 230 V 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
£4.69
Each
Units
Contact Block 1NO 800F - 600 V - Screw Yes - - - - -
RS Stock No. 331-0445
Mfr. Part No.ZB5AZ101
£5.14
Each
Units
Contact Block 1NO Harmony XB5 - - - Screw Yes - - - - -
RS Stock No. 874-2210
Mfr. Part No.3SU1400-1AA10-1BA0
BrandSiemens
£3.46
Each
Units
Contact Block 1NO SIRIUS ACT - 5 → 500 V ac/dc - Screw No 10 A No - - -
RS Stock No. 511-8370
Mfr. Part No.800F-NX-BX01
£3.30
Each
Units
Contact Block 1NC 800F - 600 V - Screw No - - - - -
RS Stock No. 610-2843
Mfr. Part No.ZBVB5
£6.83
Each
Units
Light Block - Harmony XB Yellow 24 V LED Screw No - - - - -
RS Stock No. 790-3417
Mfr. Part No.LPXC10
BrandLovato
£2.72
Each
Units
Contact Block 1NO Platinum 22mm - 690 V - Screw No 10 A - - - -
RS Stock No. 610-2966
Mfr. Part No.ZBVM5
£15.18
Each
Units
Light Block - Harmony XB Orange 230 V LED Screw No - Yes - - -
RS Stock No. 330-9811
Mfr. Part No.ZB4BW0B31
£13.23
Each
Units
Contact & Light Block 1NO Harmony XB4 Green 24 V ac/dc LED Screw Yes 10 A Yes - - -
RS Stock No. 610-2893
Mfr. Part No.ZBVG1
£9.92
Each
Units
Light Block - Harmony XB White 110 → 120 V LED Screw No - - - - -
RS Stock No. 330-9805
Mfr. Part No.ZB4BW0B11
£13.23
Each
Units
Contact & Light Block 1NO Harmony XB4 White 24 V ac/dc LED Screw Yes 10 A Yes - - -
RS Stock No. 331-0524
Mfr. Part No.ZALVB3
£8.01
Each
Units
Light Block - Harmony ZALV Green 24 V LED Screw No - Yes - - -
RS Stock No. 331-0467
Mfr. Part No.ZB5AZ102
£5.21
Each
Units
Contact Block 1NC Harmony XB5 - - - Screw Yes 10 A - - - -
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