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. 411-1362
Mfr. Part No.3SB3400-0C
BrandSiemens
MYR27.71
Each
units
Siemens 3SB3 Contact Block 1NC - - - Screw No 10 A No - -
RS Stock No. 526-8633
Mfr. Part No.3LD9220-0C
BrandSiemens
MYR54.67
Each
units
- - - - - - - - - - - -
RS Stock No. 874-2282
Mfr. Part No.3SU1550-1AA10-1BA0
BrandSiemens
MYR30.46
Each
units
SIRIUS ACT Contact Block 1NO - 5 → 500 V ac/dc - Screw Yes 6 A No - -
RS Stock No. 874-2210
Mfr. Part No.3SU1400-1AA10-1BA0
BrandSiemens
MYR24.84
Each
units
SIRIUS ACT Contact Block 1NO - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 411-1788
Mfr. Part No.3SB3400-1PD
BrandSiemens
MYR39.10
Each
units
Siemens 3SB3 Light Block - Blue 24 V LED Screw No - Yes - -
RS Stock No. 874-2162
Mfr. Part No.3SU1400-2AA10-1CA0
BrandSiemens
MYR26.06
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 411-1930
Mfr. Part No.3SB3400-1PC
BrandSiemens
MYR39.58
Each
units
Siemens 3SB3 Light Block - Green 24 V LED Screw No - Yes - -
RS Stock No. 742-9540
Mfr. Part No.3SB3423-0B
BrandSiemens
MYR48.59
Each
units
Siemens 3SB3 Contact Block 1NO - - - Cage Clamp No - - - -
RS Stock No. 526-8655
Mfr. Part No.3LD9280-0C
BrandSiemens
MYR107.58
Each
units
- - - - - - - - - - - -
RS Stock No. 874-2229
Mfr. Part No.3SU1400-1AA10-1CA0
BrandSiemens
MYR21.39
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 874-2153
Mfr. Part No.3SU1400-2AA10-1BA0
BrandSiemens
MYR29.33
Each
units
SIRIUS ACT Contact Block 1NO - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 411-1946
Mfr. Part No.3SB3400-1PB
BrandSiemens
MYR38.69
Each
units
Siemens 3SB3 Light Block - Red 24 V LED Screw No - Yes - -
RS Stock No. 411-2006
Mfr. Part No.3SB3400-0E
BrandSiemens
MYR58.21
Each
units
Siemens 3SB3 Contact Block 2NC - - - Screw No 10 A - - -
RS Stock No. 193-2336
Mfr. Part No.3SU1401-2BG40-1AA0
BrandSiemens
MYR49.72
Each
units
SIRIUS ACT - - Green - LED Screw - 20 mA Yes - -
New
RS Stock No. 197-3306
Mfr. Part No.3SU1401-1BB24-3AA0
BrandSiemens
MYR116.95
Each
units
3SU1 Light Block - - 24 V LED Spring type - - - - -
RS Stock No. 173-6816
Mfr. Part No.3SU1400-1AA10-1FA0
BrandSiemens
MYR42.33
Each
units
SIRIUS ACT Contact Block SPDT - 500 V ac/dc - Screw - 10 A - - -
RS Stock No. 135-5661
Mfr. Part No.3SU1401-1BB30-3AA0
BrandSiemens
MYR52.51
Each
units
SIRIUS ACT Light Block - Yellow 24 V ac/dc LED Cage Clamp - - Yes - -
New
RS Stock No. 197-3307
Mfr. Part No.3SU1401-1BC24-1AA0
BrandSiemens
MYR235.03
Each
units
3SU1 Light Block - - 110 V LED Screw - - - - -
RS Stock No. 173-6837
Mfr. Part No.3SU1401-2BB30-3AA0
BrandSiemens
MYR46.27
Each
units
SIRIUS ACT Light Block - Yellow 24 V ac/dc LED Cage Clamp - 20 mA - - -
RS Stock No. 193-2321
Mfr. Part No.3SU1401-2BH50-3AA0
BrandSiemens
MYR119.30
Each
units
SIRIUS ACT - - Blue 24-240 V AC/DC LED Cage Clamp - 20 mA Yes - -