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. 553-949
Mfr. Part No.ZB5AZ1055
MYR64.41
Each
units
Harmony XB5 Contact Block - - - - Screw Clamp - - - - -
RS Stock No. 197-3307
Mfr. Part No.3SU1401-1BC24-1AA0
BrandSiemens
MYR263.33
Each
units
3SU1 Light Block - - 110V LED Screw - - - - -
New
RS Stock No. 211-8495
Mfr. Part No.XEND2611
MYR380.17
Each
units
XEND Contact Block 2 NO - 240V - Screw Clamp - - - - -
RS Stock No. 180-9507
Mfr. Part No.3SU1400-1AA10-1GA0
BrandSiemens
MYR77.98
Each
units
3SU1 Contact Block SPDT - 5 → 500V ac/dc - Screw - 10A - - -
RS Stock No. 193-2336
Mfr. Part No.3SU1401-2BG40-1AA0
BrandSiemens
MYR64.54
Each
units
SIRIUS ACT - - Green - LED Screw - 20mA Yes - -
RS Stock No. 193-2576
Mfr. Part No.3SU1401-1BC00-1AA0
BrandSiemens
MYR98.51
Each
units
SIRIUS ACT - - - 110V ac LED Screw - 20mA Yes - -
RS Stock No. 183-7294
Mfr. Part No.3SU1401-1BH20-3AA0
BrandSiemens
MYR117.28
Each
units
3SU1401 Light Block - - 24 → 240V ac/dc LED - - 20mA Yes - -
RS Stock No. 187-8962
Mfr. Part No.LPXLPE3
BrandLovato
MYR44.84
Each
units
LPXLP Light Block - - 85 → 140V ac LED Screw - 4mA Yes - -
New
RS Stock No. 212-4947
Mfr. Part No.ZBVB14
MYR56.088
Each (In a Pack of 5)
units
ZBV Light Block - White 24V LED - - - - - -
RS Stock No. 330-9653
Mfr. Part No.ZB4BVG3
MYR74.15
Each
units
Harmony XB4 Light Block - - 110 → 120V LED Screw Yes - Yes - -
RS Stock No. 610-2916
Mfr. Part No.ZBVG4
MYR71.50
Each
units
Harmony XB Light Block - Red - LED Screw No - - - -
RS Stock No. 874-2109
Mfr. Part No.3SU1501-1AG00-1NA0
BrandSiemens
MYR135.28
Each
units
SIRIUS ACT Contact & Light Block 1NC, 1NO - 6 → 24V ac/dc LED Screw Yes 6A Yes - -
RS Stock No. 193-2717
Mfr. Part No.3SU1551-1AB40-3MA0
BrandSiemens
MYR167.55
Each
units
SIRIUS ACT Contact Block - - 24 ... 24V LED - - - Yes - -
RS Stock No. 193-2305
Mfr. Part No.3SU1401-2BF40-3AA0
BrandSiemens
MYR103.63
Each
units
SIRIUS ACT - - - 230V ac LED - - 20mA Yes - -
RS Stock No. 188-1190
BrandRS PRO
MYR27.01
Each
units
- Light Block - - 110V ac LED - - - Yes - -
RS Stock No. 746-8658
Mfr. Part No.ZB5AW063
MYR80.84
Each
units
Harmony XB5 Contact & Light Block 2NO - 230V ac Incandescent Screw Yes 10A - - -
RS Stock No. 874-2260
Mfr. Part No.3SU1401-1BF40-1AA0
BrandSiemens
MYR52.34
Each
units
SIRIUS ACT Light Block - - 230V ac LED Screw No 20mA Yes - -
RS Stock No. 349-1522
Mfr. Part No.ZB6EB5B
MYR52.06
Each
units
Harmony XB6 Light Block - - 30V ac/dc LED - Yes 15mA - - -
RS Stock No. 399-3652
Mfr. Part No.216559 & M22-LED-G
BrandEaton
MYR105.71
Each
units
M22 Light Block - - 12 → 30V ac/dc LED Screw - 15mA Yes - -
RS Stock No. 193-2364
Mfr. Part No.3SU1401-2BB50-1AA2
BrandSiemens
MYR139.62
Each
units
SIRIUS ACT - - Blue - LED Screw - 20mA Yes - -