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. 342-0463
Mfr. Part No.ZB6Z1B
HK$99.09
Each
units
Harmony XB6 Contact Block 1NO - - - Faston Yes - - - -
RS Stock No. 553-898
Mfr. Part No.ZBVM15
HK$143.36
Each
units
Harmony XB Light Block - White 230V LED Screw Clamp No - Yes - -
RS Stock No. 399-3775
Mfr. Part No.216566 & M22-LEDC230-W
BrandEaton
HK$180.70
Each
units
M22 Light Block - - 85 → 264V ac LED Screw No 15mA Yes - -
RS Stock No. 330-9580
Mfr. Part No.ZB4BVB1
HK$78.73
Each
units
Harmony XB4 Light Block - - 24V LED Screw Yes - Yes - -
RS Stock No. 757-8929
Mfr. Part No.MCB-10
BrandABB
HK$38.68
Each
units
ABB Modular Contact Block 1NO - - - - No - - - -
RS Stock No. 331-0164
Mfr. Part No.ZB4BZ102
HK$59.02
Each
units
Harmony XB4 Contact Block 1NC - 600V - Screw Yes - - - -
RS Stock No. 553-844
Mfr. Part No.ZBE1025
HK$39.62
Each
units
Harmony XB Contact Block 1NC - - - Screw Clamp No - - - -
RS Stock No. 193-3796
Mfr. Part No.3SU1401-2BB60-3AA2
BrandSiemens
HK$240.93
Each
units
SIRIUS ACT - - White - LED - - 20mA Yes - -
RS Stock No. 847-5042
Mfr. Part No.216569 & M22-CLED-W
BrandEaton
HK$209.68
Each
units
M22 Light Block - - 12 → 30V ac/dc LED - No 15mA Yes - -
RS Stock No. 553-860
Mfr. Part No.ZB4BZ1055
HK$519.34
Each
units
Harmony XB4 Contact Block 1NO 1NC - - - Screw Clamp Yes - - - -
RS Stock No. 790-3476
Mfr. Part No.LPXLPB3
BrandLovato
HK$55.26
Each
units
Platinum 22mm Light Block - - 18 → 30V LED Screw No - Yes - -
RS Stock No. 169-7085
Mfr. Part No.45-311.1Z10
BrandEAO
HK$67.10
Each
units
Series 45 Contact Block NO - 5 → 500V - Screw - 10A - - -
RS Stock No. 847-5162
Mfr. Part No.121474 & M22-K02SMC10
BrandEaton
HK$201.97
Each
units
M22 Contact Block 2NC+NO - 500V - Screw Yes 4A - - -
RS Stock No. 553-848
Mfr. Part No.ZBVB15
HK$74.06
Each
units
Harmony XB Light Block - White 24V ac/dc LED Screw Clamp No - - - -
New
RS Stock No. 206-5779
Mfr. Part No.101006550
HK$212.90
Each
units
EF301.1 Contact Block SPDT - 230V ac - Screw - - - - -
RS Stock No. 553-876
Mfr. Part No.ZBVJ35
HK$89.39
Each
units
Harmony XB Light Block - Green 12V LED Screw Clamp No - Yes - -
RS Stock No. 179-9490
Mfr. Part No.ZB4BW0G15
HK$727.64
Each
units
Harmony XB4 Contact & Light Block SPDT - 110 → 120V ac LED Screw Yes - Yes - -
RS Stock No. 610-2893
Mfr. Part No.ZBVG1
HK$397.17
Each
units
Harmony XB Light Block - - 110 → 120V LED Screw No - - - -
RS Stock No. 847-5020
Mfr. Part No.216577 & M22-CLED230-G
BrandEaton
HK$122.08
Each
units
M22 Light Block - - 85 → 264V ac LED - No 15mA Yes - -
RS Stock No. 188-1190
BrandRS PRO
HK$46.33
Each
units
- Light Block - - 110V ac LED - - - Yes - -
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