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. 330-9596
Mfr. Part No.ZB4BVB3
MYR50.33
Each
units
Harmony XB4 Light Block - - 24V LED Screw Yes - Yes - -
RS Stock No. 331-0417
Mfr. Part No.ZB5AVM3
MYR118.21
Each
units
Harmony XB5 Light Block - - 230 → 240V ac LED Screw Yes - Yes - -
RS Stock No. 124-5192
Mfr. Part No.180792 & M22-FK10
BrandEaton
MYR36.56
Each
units
M22 - - - - - - - - - - -
RS Stock No. 610-2859
Mfr. Part No.ZBVB6
MYR54.93
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -
RS Stock No. 110-4502
Mfr. Part No.216574 & M22-CLEDC-G
BrandEaton
MYR61.03
Each
units
M22 Light Block - - 12 → 30V ac/dc LED - - - Yes - -
RS Stock No. 422-8842
Mfr. Part No.ZB6E1B
MYR18.34
Each
units
Harmony XB6 Contact Block 1NO - - - - - - - - -
RS Stock No. 399-3731
Mfr. Part No.216563 & M22-LED230-W
BrandEaton
MYR125.02
Each
units
M22 Light Block - - 85 → 264V ac LED Screw No 15mA Yes - -
RS Stock No. 330-9861
Mfr. Part No.ZB4BW0B42
MYR73.50
Each
units
Harmony XB4 Contact & Light Block 1NC - 24V ac/dc LED Screw Yes 10A Yes - -
RS Stock No. 746-8863
Mfr. Part No.ZD4PA203
MYR152.72
Each
units
Harmony XB4 Contact Block - - - - Screw Yes - - - -
RS Stock No. 330-9748
Mfr. Part No.ZB4BW035
MYR256.37
Each
units
Harmony XB4 Contact & Light Block 1NO 1NC - 110 → 120V ac LED Screw Yes 10A Yes - -
RS Stock No. 610-2815
Mfr. Part No.ZBVB1
MYR64.86
Each
units
Harmony XB Light Block - - 24V LED Screw No - - - -
RS Stock No. 399-3719
Mfr. Part No.218058 & M22-LEDC-B
BrandEaton
MYR54.91
Each
units
M22 Light Block - - 12 → 30V ac/dc LED Screw No 15mA Yes - -
RS Stock No. 609-2825
Mfr. Part No.ZB4BZ141
MYR83.39
Each
units
Harmony XB4 Contact Block 1NO 2NC - 600V - Screw Yes - - - -
RS Stock No. 609-3121
Mfr. Part No.ZB5AW0B31
MYR89.09
Each
units
Harmony XB5 Contact & Light Block 1NO - 24V ac/dc LED Screw Yes 10A Yes - -
RS Stock No. 757-8932
Mfr. Part No.1SFA611610R1010 MCB-01
BrandABB
MYR18.68
Each
units
ABB Modular Contact Block 1NC - - - - No - - - -
RS Stock No. 260-154
Mfr. Part No.33E01
BrandBACO
MYR24.148
Each (In a Pack of 5)
units
BACO Contact Block 1NC - 600V - Screw No 10A - - -
RS Stock No. 746-8967
Mfr. Part No.ZBE1016P
MYR137.08
Each
units
Harmony XB - - - - - - - - - - -
RS Stock No. 746-9009
Mfr. Part No.XACS101
MYR102.55
Each
units
Harmony XAC Contact Block 1NO - - - - - - - - -
RS Stock No. 610-3133
Mfr. Part No.ZBV6
MYR21.63
Each
units
Harmony XB Light Block - - - Incandescent Screw No - - - -
RS Stock No. 331-0530
Mfr. Part No.ZALVB4
MYR36.93
Each
units
Harmony ZALV Light Block - - 24V LED Screw No - Yes - -