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. 331-0473
Mfr. Part No.ZBE101
SGD12.64
Each
units
Harmony XB Contact Block 1NO - - - Screw No 10A No - -
RS Stock No. 331-0489
Mfr. Part No.ZBE102
SGD6.30
Each
units
Harmony XB Contact Block 1NC - 600V ac - Screw No 10A No - -
RS Stock No. 610-2938
Mfr. Part No.ZBVM1
SGD101.43
Each
units
Harmony XB Light Block - - 230V LED Screw No - Yes - -
RS Stock No. 260-104
Mfr. Part No.33E10
BrandBACO
SGD6.574
Each (In a Pack of 5)
units
BACO Contact Block 1NO - 600V - Screw No 10A - - -
RS Stock No. 260-154
Mfr. Part No.33E01
BrandBACO
SGD6.85
Each (In a Pack of 5)
units
BACO Contact Block 1NC - 600V - Screw No 10A - - -
RS Stock No. 331-0158
Mfr. Part No.ZB4BZ101
SGD9.42
Each
units
Harmony XB4 Contact Block 1NO - 600V - Screw Yes 10A - - -
RS Stock No. 331-0186
Mfr. Part No.ZB4BZ103
SGD17.27
Each
units
Harmony XB4 Contact Block 2NO - 600V - Screw Yes 10A - - -
RS Stock No. 610-2944
Mfr. Part No.ZBVM3
SGD62.78
Each
units
Harmony XB Light Block - - 230V LED Screw No - Yes - -
RS Stock No. 610-3004
Mfr. Part No.ZBZVM
SGD18.65
Each
units
Harmony XB - - - - - - - - - - -
RS Stock No. 331-0192
Mfr. Part No.ZB4BZ105
SGD25.44
Each
units
Harmony XB4 Contact Block 1NO 1NC - - - Screw Yes 10A - - -
RS Stock No. 610-2972
Mfr. Part No.ZBVM6
SGD32.76
Each
units
Harmony XB Light Block - - 230V LED Screw No - Yes - -
RS Stock No. 815-1670
Mfr. Part No.ZB2BE102
SGD6.33
Each
units
XB2 Contact Block 1NC - 600V - Screw - 10A - - -
RS Stock No. 610-2950
Mfr. Part No.ZBVM4
SGD66.67
Each
units
Harmony XB Light Block - - 230V LED Screw No - Yes - -
RS Stock No. 609-6827
Mfr. Part No.XENG1191
SGD57.09
Each
units
XENG Contact Block 1 NC, 2NO - - - - - 10A - - -
RS Stock No. 790-3408
Mfr. Part No.LPXC01
BrandLovato
SGD5.53
Each
units
Platinum 22mm Contact Block 1NC - 690V - Screw No 10A - - -
RS Stock No. 349-1550
Mfr. Part No.ZB6EB4B
SGD36.44
Each
units
Harmony XB6 Light Block - - 30V ac/dc LED - Yes 15mA - - -
RS Stock No. 815-1676
Mfr. Part No.ZB2BE101
SGD30.24
Each
units
XB2 Contact Block 1NO - 600V - Screw - 10A - - -
RS Stock No. 610-2821
Mfr. Part No.ZBVB3
SGD17.96
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -
RS Stock No. 610-2815
Mfr. Part No.ZBVB1
SGD22.32
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -
RS Stock No. 331-0164
Mfr. Part No.ZB4BZ102
SGD12.58
Each
units
Harmony XB4 Contact Block 1NC - 600V - Screw Yes - - - -