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. 422-8375
Mfr. Part No.ZB5AVM6
PHP1,005.29
Each
units
Harmony XB5 Light Block - Blue 230 → 240 V ac LED Screw Yes - Yes - -
RS Stock No. 399-3674
Mfr. Part No.M22-LED-B
BrandEaton
PHP430.33
Each
units
M22 Light Block - Blue 12 → 30 V ac/dc LED Screw No 15 mA Yes - -
RS Stock No. 330-9782
Mfr. Part No.ZB4BW065
PHP826.48
Each
units
Harmony XB4 Contact & Light Block 1NO 1NC - 250 V - Screw Yes 10 A No - -
RS Stock No. 833-6809
Mfr. Part No.HW-F10
BrandIdec
PHP272.40
Each
units
HW Series Contact Block 1NO - 600 V - Fingersafe No 10 A - - -
RS Stock No. 724-9564
Mfr. Part No.ZBE502
PHP606.40
Each
units
Harmony XB Contact Block 1NC - - - Screw No - - - -
RS Stock No. 330-9596
Mfr. Part No.ZB4BVB3
PHP552.56
Each
units
Harmony XB4 Light Block - Green 24 V LED Screw Yes - Yes - -
RS Stock No. 422-8612
Mfr. Part No.ZB5AW0M35
PHP1,511.08
Each
units
Harmony XB5 Contact & Light Block - Green 230 → 240 V ac LED Screw Yes - - - -
RS Stock No. 330-9849
Mfr. Part No.ZB4BW0B41
PHP789.54
Each
units
Harmony XB4 Contact & Light Block 1NO Red 24 V ac/dc LED Screw Yes 10 A Yes - -
RS Stock No. 757-8967
Mfr. Part No.1SFA611621R1072
BrandABB
PHP832.24
Each
units
ABB Modular Light Block - Green 230 V LED - No - Yes - -
RS Stock No. 331-0467
Mfr. Part No.ZB5AZ102
PHP319.51
Each
units
Harmony XB5 Contact Block 1NC - - - Screw Yes 10 A - - -
RS Stock No. 330-9697
Mfr. Part No.ZB4BVM1
PHP1,066.21
Each
units
Harmony XB4 Light Block - White 230 → 240 V LED Screw Yes - Yes - -
RS Stock No. 810-3772
Mfr. Part No.M22-AK10
BrandEaton
PHP392.32
Each
units
M22 Contact Block 1NO - 500 V - Screw Yes 4 A - - -
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. 757-8932
Mfr. Part No.1SFA611610R1010
BrandABB
PHP322.26
Each
units
ABB Modular Contact Block 1NC - - - - No - - - -
RS Stock No. 401-315
Mfr. Part No.ZB6EM8B
PHP1,031.468
Each (In a Pack of 5)
units
Harmony XB6 Light Block - Orange 230/240 V ac/dc LED Faston Connectors Yes - - - -
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. 833-6770
Mfr. Part No.HW-C10
BrandIdec
PHP284.05
Each
units
- - - - - - - - - - - -
RS Stock No. 330-9899
Mfr. Part No.ZB4BW0B61
PHP805.65
Each
units
Harmony XB4 Contact & Light Block 1NO Blue 24 V ac/dc LED Screw Yes 10 A Yes - -
RS Stock No. 260-312
Mfr. Part No.33EAGL
BrandBACO
PHP635.12
Each
units
BACO Light Block - Green 24 V LED Screw No - Yes - -
RS Stock No. 746-9100
Mfr. Part No.ZB4BW031
PHP1,892.29
Each
units
Harmony XB4 Contact Block 1NO - 110 → 120 V ac LED Screw Yes 10 A No - -
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