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. 746-9188
Mfr. Part No.ZB5AW061
kr 70,81
Each
Units
Harmony XB5 Contact & Light Block 1NO 1NC - 230 → 240 V ac Incandescent Screw Yes 10 A - - -
RS Stock No. 135-5669
Mfr. Part No.3SU1401-1BH50-1AA0
BrandSiemens
kr 178,46
Each
Units
SIRIUS ACT Light Block - Blue 24 → 240 V ac/dc LED Screw - - Yes - -
RS Stock No. 331-0530
Mfr. Part No.ZALVB4
kr 93,25
Each
Units
Harmony ZALV Light Block - Red 24 V LED Screw No - Yes - -
New
RS Stock No. 193-4791
Mfr. Part No.3SU1401-2BB20-3AA2
BrandSiemens
kr 251,24
Each
Units
SIRIUS ACT - - Red - LED Cage Clamp - 20 mA Yes - -
RS Stock No. 746-9204
Mfr. Part No.ZB5AW0B61
kr 96,98
Each
Units
Harmony XB5 Contact & Light Block 1NO Blue 24 V ac/dc LED Screw Yes 10 A Yes - -
RS Stock No. 874-2153
Mfr. Part No.3SU1400-2AA10-1BA0
BrandSiemens
kr 66,60
Each
Units
SIRIUS ACT Contact Block 1NO - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 833-6821
Mfr. Part No.HW-LH3
BrandIdec
kr 4,14
Each
Units
- - - - - - - - - - - -
RS Stock No. 742-9540
Mfr. Part No.3SB3423-0B
BrandSiemens
kr 65,92
Each
Units
Siemens 3SB3 Contact Block 1NO - - - Cage Clamp No - - - -
RS Stock No. 757-8941
Mfr. Part No.1SFA611621R1011
BrandABB
kr 70,89
Each
Units
ABB Modular Light Block - Red 24 V LED - No - Yes - -
RS Stock No. 174-4229
Mfr. Part No.A22NZ-S-P2CN
BrandOmron
kr 115,50
Each
Units
A22NZ Contact Block SPDT - 240 V ac/dc - Push-In Yes 10 A - - -
RS Stock No. 411-1867
Mfr. Part No.3SB3400-1RD
BrandSiemens
kr 119,19
Each
Units
Siemens 3SB3 Light Block - Blue 230 V LED Screw No - Yes - -
RS Stock No. 330-9805
Mfr. Part No.ZB4BW0B11
kr 147,49
Each
Units
Harmony XB4 Contact & Light Block 1NO White 24 V ac/dc LED Screw Yes 10 A Yes - -
RS Stock No. 515-975
Mfr. Part No.9001KA6
kr 125,83
Each
Units
Harmony 9001K Contact Block - - - - - - - - - -
New
RS Stock No. 193-2719
Mfr. Part No.3SU1551-1AB60-3NA0
BrandSiemens
kr 289,43
Each
Units
SIRIUS ACT Contact Block - White 24 ... 24 V LED Cage Clamp - - Yes - -
New
RS Stock No. 193-2320
Mfr. Part No.3SU1401-2BG20-3AA0
BrandSiemens
kr 122,43
Each
Units
SIRIUS ACT - - Red - LED Cage Clamp - 20 mA Yes - -
RS Stock No. 330-9681
Mfr. Part No.ZB4BVG6
kr 140,90
Each
Units
Harmony XB4 Light Block - Blue 110 → 120 V LED Screw Yes - Yes - -
RS Stock No. 187-8974
Mfr. Part No.LPXLPBE5
BrandLovato
kr 105,96
Each
Units
LPXLP Light Block - Yellow 85 → 140 V ac LED Screw - 4 mA Yes - -
RS Stock No. 342-2683
Mfr. Part No.ZB4BW0G51
kr 168,67
Each
Units
Harmony XB4 Contact & Light Block 1NO Yellow 110 → 120 V ac LED Screw Yes 10 A Yes - -
RS Stock No. 760-4671
Mfr. Part No.M22-SWD-K22LED-G
BrandEaton
kr 251,59
Each
Units
M22 Contact & Light Block 2CO Green - LED Smartwire No 15 mA Yes - -
New
RS Stock No. 193-2211
Mfr. Part No.3SU1401-1BB60-1AA2
BrandSiemens
kr 219,24
Each
Units
SIRIUS ACT - - White - LED Screw - 20 mA Yes - -
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