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. 193-4829
Mfr. Part No.3SU1400-1AA10-3RA0
BrandSiemens
HK$244.94
Each
units
SIRIUS ACT Contact Block - - - - - - 6A - - -
RS Stock No. 173-6837
Mfr. Part No.3SU1401-2BB30-3AA0
BrandSiemens
HK$104.21
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED - - 20mA - - -
RS Stock No. 193-4830
Mfr. Part No.3SU1401-1BB50-3AA2
BrandSiemens
HK$251.25
Each
units
SIRIUS ACT - - Blue - LED - - 20mA Yes - -
RS Stock No. 193-2521
Mfr. Part No.3SU1401-1BG60-3AA0
BrandSiemens
HK$111.09
Each
units
SIRIUS ACT - - White - LED - - 20mA Yes - -
RS Stock No. 193-2675
Mfr. Part No.3SU1501-1AG60-1NA0
BrandSiemens
HK$239.83
Each
units
SIRIUS ACT Contact Block - - 6 ... 24V LED Screw - - Yes - -
RS Stock No. 874-2250
Mfr. Part No.3SU1401-1BB60-1AA0
BrandSiemens
HK$65.10
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED Screw No 20mA Yes - -
RS Stock No. 193-2676
Mfr. Part No.3SU1550-1AA10-1FA0
BrandSiemens
HK$128.74
Each
units
SIRIUS ACT Contact Block - - 5 ... 500V - Screw - - - - -
RS Stock No. 173-6838
Mfr. Part No.3SU1401-2BB40-1AA0
BrandSiemens
HK$99.11
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED Screw - 20mA - - -
RS Stock No. 193-2763
Mfr. Part No.3SU1401-1BB20-3AA2
BrandSiemens
HK$251.25
Each
units
SIRIUS ACT - - Red - LED - - 20mA Yes - -
RS Stock No. 180-9513
Mfr. Part No.3SU1401-1BC20-1AA0
BrandSiemens
HK$159.00
Each
units
3SU1 Light Block - - 110V ac LED Screw - 20mA Yes - -
RS Stock No. 135-5660
Mfr. Part No.3SU1401-1BB20-3AA0
BrandSiemens
HK$101.41
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED - - - Yes - -
RS Stock No. 135-5666
Mfr. Part No.3SU1401-1BH30-1AA0
BrandSiemens
HK$185.84
Each
units
SIRIUS ACT Light Block - - 24 → 240V ac/dc LED Screw - - Yes - -
RS Stock No. 181-2877
Mfr. Part No.3SU1400-1AA10-3QA0
BrandSiemens
HK$207.34
Each
units
SIRIUS ACT Contact Block SPDT - 500V ac/dc - - - 10A - - -
RS Stock No. 193-3856
Mfr. Part No.3SU1550-1AA10-3MA0
BrandSiemens
HK$176.50
Each
units
SIRIUS ACT Contact Block - - 5 ... 500V - - - - - - -
RS Stock No. 193-2255
Mfr. Part No.3SU1401-2BG60-3AA0
BrandSiemens
HK$121.47
Each
units
SIRIUS ACT - - White - LED - - 20mA Yes - -
RS Stock No. 181-2883
Mfr. Part No.3SU1401-1BG50-1AA0
BrandSiemens
HK$103.82
Each
units
SIRIUS ACT Light Block - - 6 → 24V ac/dc LED - - 20mA Yes - -
RS Stock No. 874-2254
Mfr. Part No.3SU1401-1BB60-3AA0
BrandSiemens
HK$66.38
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED - No 20mA Yes - -
RS Stock No. 874-2162
Mfr. Part No.3SU1400-2AA10-1CA0
BrandSiemens
HK$58.21
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500V ac/dc - Screw No 10A No - -
RS Stock No. 193-2657
Mfr. Part No.3SU1501-1AG50-1LA0
BrandSiemens
HK$246.12
Each
units
SIRIUS ACT Contact Block - - 6 ... 24V LED Screw - - Yes - -
RS Stock No. 193-2213
Mfr. Part No.3SU1401-2BB00-3AA2
BrandSiemens
HK$270.72
Each
units
- Light Block - - - LED - - 20mA Yes - -