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. 874-2229
Mfr. Part No.3SU1400-1AA10-1CA0
BrandSiemens
$9.42
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 411-1902
Mfr. Part No.3SB3400-1PE
BrandSiemens
$22.46
Each
units
Siemens 3SB3 Light Block - White 24 V LED Screw No - Yes - -
RS Stock No. 874-2250
Mfr. Part No.3SU1401-1BB60-1AA0
BrandSiemens
$16.73
Each
units
SIRIUS ACT Light Block - White 24 V ac/dc LED Screw No 20 mA Yes - -
RS Stock No. 874-2232
Mfr. Part No.3SU1401-1BB20-1AA0
BrandSiemens
$14.74
Each
units
SIRIUS ACT Light Block - Red 24 V ac/dc LED Screw No 20 mA Yes - -
RS Stock No. 874-2263
Mfr. Part No.3SU1401-1BF20-1AA0
BrandSiemens
$24.56
Each
units
SIRIUS ACT Light Block - Red 230 V ac LED Screw No 20 mA Yes - -
New
RS Stock No. 193-2521
Mfr. Part No.3SU1401-1BG60-3AA0
BrandSiemens
$20.37
Each
units
SIRIUS ACT - - White - LED Cage Clamp - 20 mA Yes - -
New
RS Stock No. 193-2655
Mfr. Part No.3SU1501-1AG50-1FA0
BrandSiemens
$39.19
Each
units
SIRIUS ACT Contact Block - Blue 6 ... 24 V LED Screw - - Yes - -
New
RS Stock No. 193-2719
Mfr. Part No.3SU1551-1AB60-3NA0
BrandSiemens
$54.21
Each
units
SIRIUS ACT Contact Block - White 24 ... 24 V LED Cage Clamp - - Yes - -
New
RS Stock No. 193-3902
Mfr. Part No.3SU1401-2BB40-1AA2
BrandSiemens
$43.15
Each
units
- Light Block - Green 24-240 V AC/DC LED Screw - 20 mA Yes - -
RS Stock No. 411-1867
Mfr. Part No.3SB3400-1RD
BrandSiemens
$28.73
Each
units
Siemens 3SB3 Light Block - Blue 230 V LED Screw No - Yes - -
New
RS Stock No. 193-2720
Mfr. Part No.3SU1551-1AB60-3PA0
BrandSiemens
$54.21
Each
units
SIRIUS ACT Contact Block - White 24 ... 24 V LED Cage Clamp - - Yes - -
RS Stock No. 173-6834
Mfr. Part No.3SU1401-2BB20-1AA0
BrandSiemens
$13.89
Each
units
SIRIUS ACT Light Block - Red 24 V ac/dc LED Screw - 20 mA - - -
RS Stock No. 874-2178
Mfr. Part No.3SU1400-2AA10-3CA0
BrandSiemens
$12.10
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500 V ac/dc - Cage Clamp No 10 A No - -
New
RS Stock No. 193-3749
Mfr. Part No.3SU1401-2BH20-1AA0
BrandSiemens
$37.51
Each
units
SIRIUS ACT - - Red 24-240 V AC/DC LED Screw - 20 mA Yes - -
New
RS Stock No. 193-2657
Mfr. Part No.3SU1501-1AG50-1LA0
BrandSiemens
$52.36
Each
units
SIRIUS ACT Contact Block - Blue 6 ... 24 V LED Screw - - Yes - -
New
RS Stock No. 193-3671
Mfr. Part No.3SU1501-1AG40-1LA0
BrandSiemens
$57.33
Each
units
SIRIUS ACT Contact Block - Green 6 ... 24 V LED Screw - - Yes - -
New
RS Stock No. 193-2289
Mfr. Part No.3SU1401-2BH20-3AA0
BrandSiemens
$41.69
Each
units
SIRIUS ACT - - Red 24-240 V AC/DC LED Cage Clamp - 20 mA Yes - -
New
RS Stock No. 193-4849
Mfr. Part No.3SU1401-2BG00-1AA0
BrandSiemens
$19.23
Each
units
SIRIUS ACT - - Amber - LED Screw - 20 mA Yes - -
New
RS Stock No. 193-2370
Mfr. Part No.3SU1501-1AG20-1FA0
BrandSiemens
$39.19
Each
units
SIRIUS ACT Contact Block - Red 6 ... 24 V LED Screw - - Yes - -
New
RS Stock No. 193-2732
Mfr. Part No.3SU1400-1AA10-3GA0
BrandSiemens
$24.36
Each
units
SIRIUS ACT Contact Block - - 5 ... 500 V AC/DC - Cage Clamp - 6 A - - -