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. 742-9540
Mfr. Part No.3SB3423-0B
BrandSiemens
PHP336.72
Each
units
Siemens 3SB3 Contact Block 1NO - - - Cage Clamp No - - - -
RS Stock No. 742-9439
Mfr. Part No.3SB3420-0CA
BrandSiemens
PHP903.07
Each
units
Siemens 3SB3 Contact Block 1NC - - - Screw No - - - -
RS Stock No. 746-0816
Mfr. Part No.3SB1400-0J
BrandSiemens
PHP1,060.14
Each
units
Siemens 3SB3 Contact Block 2NO - - - Screw No 10 A - - -
RS Stock No. 874-2229
Mfr. Part No.3SU1400-1AA10-1CA0
BrandSiemens
PHP281.42
Each
units
SIRIUS ACT Contact Block 1NC - 5 → 500 V ac/dc - Screw No 10 A No - -
RS Stock No. 455-5330
Mfr. Part No.3SB3420-0C
BrandSiemens
PHP338.72
Each
units
Siemens 3SB3 Contact Block 1NC - - - Screw No - - - -
RS Stock No. 411-1340
Mfr. Part No.3SB3400-0B
BrandSiemens
PHP282.31
Each
units
Siemens 3SB3 Contact Block 1NO - - - Screw No 10 A - - -
RS Stock No. 455-5469
Mfr. Part No.3SB3420-0B
BrandSiemens
PHP274.22
Each
units
Siemens 3SB3 Contact Block 1NO - - - Screw No - - - -
RS Stock No. 411-1362
Mfr. Part No.3SB3400-0C
BrandSiemens
PHP282.31
Each
units
Siemens 3SB3 Contact Block 1NC - - - Screw No 10 A No - -
RS Stock No. 742-9492
Mfr. Part No.3SB3400-0DA
BrandSiemens
PHP1,686.62
Each
units
Siemens 3SB3 Contact Block 2NO - - - Screw No 10 A - - -
RS Stock No. 742-9552
Mfr. Part No.3SB3423-1PB
BrandSiemens
PHP428.48
Each
units
Siemens 3SB3 Light Block - Red 24 V LED Cage Clamp No - Yes - -
RS Stock No. 735-2774
Mfr. Part No.3SB3400-1G
BrandSiemens
PHP1,419.55
Each
units
Siemens 3SB3 Light Block - White - BA9S Bulb Screw No - No - -
RS Stock No. 411-1946
Mfr. Part No.3SB3400-1PB
BrandSiemens
PHP342.16
Each
units
Siemens 3SB3 Light Block - Red 24 V LED Screw No - Yes - -
RS Stock No. 411-2006
Mfr. Part No.3SB3400-0E
BrandSiemens
PHP594.14
Each
units
Siemens 3SB3 Contact Block 2NC - - - Screw No 10 A - - -
RS Stock No. 874-2250
Mfr. Part No.3SU1401-1BB60-1AA0
BrandSiemens
PHP464.11
Each
units
SIRIUS ACT Light Block - White 24 V ac/dc LED Screw No 20 mA Yes - -
RS Stock No. 455-5289
Mfr. Part No.3SB3400-1C
BrandSiemens
PHP720.77
Each
units
Siemens 3SB3 Light Block - White 230 V BA9S Bulb Screw No - Yes - -
RS Stock No. 742-9458
Mfr. Part No.3SB3400-0BA
BrandSiemens
PHP831.36
Each
units
Siemens 3SB3 Contact Block 1NO - - - Screw No 10 A - - -
RS Stock No. 181-2878
Mfr. Part No.3SU1401-1BC30-1AA0
BrandSiemens
PHP819.69
Each
units
SIRIUS ACT Light Block - Yellow 110 V ac LED Screw Terminal - 20 mA Yes - -
RS Stock No. 135-5664
Mfr. Part No.3SU1401-1BF50-1AA0
BrandSiemens
PHP960.67
Each
units
SIRIUS ACT Light Block - Blue 230 V ac LED Screw - - Yes - -
New
RS Stock No. 193-2339
Mfr. Part No.3SU1401-3BA60-5AA0
BrandSiemens
PHP312.51
Each
units
SIRIUS ACT - - White - LED Socket connection (THT) - 20 mA Yes - -
RS Stock No. 874-2165
Mfr. Part No.3SU1400-2AA10-3BA0
BrandSiemens
PHP326.37
Each
units
SIRIUS ACT Contact Block 1NO - 5 → 500 V ac/dc - Cage Clamp No 10 A No - -