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
MYR26.35
Each
units
Harmony XB Contact Block 1NO - - - Screw No 10A No - -
RS Stock No. 609-6827
Mfr. Part No.XENG1191
MYR103.32
Each
units
XENG Contact Block 1 NC, 2NO - - - - - 10A - - -
RS Stock No. 331-0489
Mfr. Part No.ZBE102
MYR22.40
Each
units
Harmony XB Contact Block 1NC - 600V ac - Screw No 10A No - -
RS Stock No. 331-0158
Mfr. Part No.ZB4BZ101
MYR32.53
Each
units
Harmony XB4 Contact Block 1NO - 600V - Screw Yes 10A - - -
RS Stock No. 815-1676
Mfr. Part No.ZB2BE101
MYR37.96
Each
units
XB2 Contact Block 1NO - 600V - Screw - 10A - - -
RS Stock No. 610-2944
Mfr. Part No.ZBVM3
MYR127.65
Each
units
Harmony XB Light Block - - 230V LED Screw No - Yes - -
RS Stock No. 826-8677
Mfr. Part No.NSPULSARPRO-R
MYR208.30
Each
units
Pulsar - - - - - - - - - - -
RS Stock No. 815-1670
Mfr. Part No.ZB2BE102
MYR16.84
Each
units
XB2 Contact Block 1NC - 600V - Screw - 10A - - -
RS Stock No. 760-4659
Mfr. Part No.115972 & M22-SWD-K11LED-W
BrandEaton
MYR197.38
Each
units
M22 Contact & Light Block 1CO White - LED - No 15mA Yes - -
RS Stock No. 260-104
Mfr. Part No.33E10
BrandBACO
MYR22.588
Each (In a Pack of 5)
units
BACO Contact Block 1NO - 600V - Screw No 10A - - -
RS Stock No. 330-9811
Mfr. Part No.ZB4BW0B31
MYR73.53
Each
units
Harmony XB4 Contact & Light Block 1NO - 24V ac/dc LED Screw Yes 10A Yes - -
RS Stock No. 342-2784
Mfr. Part No.ZB4BZ104
MYR56.74
Each
units
Harmony XB4 Contact Block 2NC - 600V - Screw Yes 10A - - -
RS Stock No. 746-8832
Mfr. Part No.ZBE1026P
MYR142.21
Each
units
Harmony XB Contact Block 1NC - - - Screw No - - - -
RS Stock No. 610-2950
Mfr. Part No.ZBVM4
MYR108.74
Each
units
Harmony XB Light Block - - 230V LED Screw No - Yes - -
RS Stock No. 331-0164
Mfr. Part No.ZB4BZ102
MYR32.53
Each
units
Harmony XB4 Contact Block 1NC - 600V - Screw Yes - - - -
RS Stock No. 609-3165
Mfr. Part No.ZB5AZ105
MYR55.51
Each
units
Harmony XB5 Contact Block 1NO 1NC - - - Screw Yes 10A - - -
RS Stock No. 610-2843
Mfr. Part No.ZBVB5
MYR48.41
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -
RS Stock No. 399-3630
Mfr. Part No.216557 & M22-LED-W
BrandEaton
MYR55.05
Each
units
RMQ Titan Light Block - - 12 →30V ac/dc LED Screw No 15mA Yes - -
RS Stock No. 610-2821
Mfr. Part No.ZBVB3
MYR62.90
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -
RS Stock No. 610-2837
Mfr. Part No.ZBVB4
MYR59.27
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -