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
TWD219.00
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500V ac/dc - Screw No 10A No - -
RS Stock No. 411-1362
Mfr. Part No.3SB3400-0C
BrandSiemens
TWD179.00
Each
units
Siemens 3SB3 Contact Block 1NC - - - Screw No 10A No - -
RS Stock No. 173-6828
Mfr. Part No.3SU1401-1BF20-3AA0
BrandSiemens
TWD649.00
Each
units
SIRIUS ACT Light Block - - 230V ac LED - - 20mA - - -
RS Stock No. 181-2880
Mfr. Part No.3SU1401-1BC60-3AA0
BrandSiemens
TWD649.00
Each
units
SIRIUS ACT Light Block - - 110V ac LED - - 20mA Yes - -
RS Stock No. 173-6829
Mfr. Part No.3SU1401-1BF30-3AA0
BrandSiemens
TWD584.00
Each
units
SIRIUS ACT Light Block - - 230V ac LED - - 20mA - - -
RS Stock No. 181-2881
Mfr. Part No.3SU1401-1BG30-1AA0
BrandSiemens
TWD278.00
Each
units
SIRIUS ACT Light Block - - 6 → 24V ac/dc LED - - 20mA Yes - -
RS Stock No. 193-5186
Mfr. Part No.3SU1400-3AA10-5CA0
BrandSiemens
TWD688.00
Each
units
SIRIUS ACT Contact Block - - - - - - 6A - - -
RS Stock No. 193-2305
Mfr. Part No.3SU1401-2BF40-3AA0
BrandSiemens
TWD705.00
Each
units
SIRIUS ACT - - - 230V ac LED - - 20mA Yes - -
RS Stock No. 203-8683
Mfr. Part No.3SU1401-1BF24-1AA0
BrandSiemens
TWD1,671.00
Each
units
3SU Light Block - - 230V LED Screw - - - - -
RS Stock No. 193-3791
Mfr. Part No.3SU1400-1AA10-3NA0
BrandSiemens
TWD914.00
Each
units
SIRIUS ACT Contact Block - - - - - - 6A - - -
RS Stock No. 180-9513
Mfr. Part No.3SU1401-1BC20-1AA0
BrandSiemens
TWD593.00
Each
units
3SU1 Light Block - - 110V ac LED Screw - 20mA Yes - -
RS Stock No. 874-2244
Mfr. Part No.3SU1401-1BB40-1AA0
BrandSiemens
TWD247.00
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED Screw No 20mA Yes - -
RS Stock No. 193-2212
Mfr. Part No.3SU1401-2BB00-1AA2
BrandSiemens
TWD902.00
Each
units
SIRIUS ACT - - - - LED Screw - 20mA Yes - -
RS Stock No. 173-6836
Mfr. Part No.3SU1401-2BB30-1AA0
BrandSiemens
TWD374.00
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED Screw - 20mA - - -
RS Stock No. 183-7294
Mfr. Part No.3SU1401-1BH20-3AA0
BrandSiemens
TWD757.00
Each
units
3SU1401 Light Block - - 24 → 240V ac/dc LED - - 20mA Yes - -
RS Stock No. 173-6838
Mfr. Part No.3SU1401-2BB40-1AA0
BrandSiemens
TWD374.00
Each
units
SIRIUS ACT Light Block - - 24V ac/dc LED Screw - 20mA - - -
RS Stock No. 193-2521
Mfr. Part No.3SU1401-1BG60-3AA0
BrandSiemens
TWD429.00
Each
units
SIRIUS ACT - - White - LED - - 20mA Yes - -
RS Stock No. 197-3308
Mfr. Part No.3SU1401-1BC24-3AA0
BrandSiemens
TWD1,671.00
Each
units
3SU1 Light Block - - 110V LED - - - - - -
RS Stock No. 874-2222
Mfr. Part No.3SU1400-1AA10-3BA0
BrandSiemens
TWD181.00
Each
units
SIRIUS ACT Contact Block 1NO - 5 → 500V ac/dc - - No 10A No - -
RS Stock No. 173-6830
Mfr. Part No.3SU1401-1BF40-3AA0
BrandSiemens
TWD649.00
Each
units
SIRIUS ACT Light Block - - 230V ac LED - - 20mA - - -