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. 331-0467
Mfr. Part No.ZB5AZ102
MYR20.96
Each
units
Harmony XB5 Contact Block 1NC - - - Screw Yes 10 A - - -
RS Stock No. 331-0401
Mfr. Part No.ZB5AVB5
MYR48.00
Each
units
Harmony XB5 Light Block - Yellow 24 V ac/dc LED Screw Yes - Yes - -
RS Stock No. 746-0816
Mfr. Part No.3SB1400-0J
BrandSiemens
MYR46.99
Each
units
Siemens 3SB3 Contact Block 2NO - - - Screw No 10 A - - -
RS Stock No. 609-3121
Mfr. Part No.ZB5AW0B31
MYR100.45
Each
units
Harmony XB5 Contact & Light Block 1NO Green 24 V ac/dc LED Screw Yes 10 A Yes - -
RS Stock No. 757-8948
Mfr. Part No.1SFA611620R1001
BrandABB
MYR24.75
Each
units
ABB Modular Light Block - - - BA9S Bulb - No - No - -
RS Stock No. 331-0372
Mfr. Part No.ZB5AVB3
MYR54.64
Each
units
Harmony XB5 Light Block - Green 24 V ac/dc LED Screw Yes - Yes - -
RS Stock No. 342-0463
Mfr. Part No.ZB6Z1B
MYR28.59
Each
units
Harmony XB6 Contact Block 1NO - - - Faston Connectors Yes - - - -
RS Stock No. 757-8932
Mfr. Part No.1SFA611610R1010
BrandABB
MYR15.20
Each
units
ABB Modular Contact Block 1NC - - - - No - - - -
RS Stock No. 422-8858
Mfr. Part No.ZB6E2B
MYR20.78
Each
units
Harmony XB6 Contact Block 1NC - - - - - - - - -
RS Stock No. 399-3719
Mfr. Part No.M22-LEDC-B
BrandEaton
MYR41.26
Each
units
M22 Light Block - Blue 12 → 30 V ac/dc LED Screw No 15 mA Yes - -
RS Stock No. 610-3133
Mfr. Part No.ZBV6
MYR20.93
Each
units
Harmony XB Light Block - - - Incandescent Screw No - - - -
RS Stock No. 609-2718
Mfr. Part No.ZB4BW0B15
MYR118.35
Each
units
Harmony XB4 Contact & Light Block 1NO 1NC White 24 V ac/dc LED Screw Yes 10 A Yes - -
RS Stock No. 411-1902
Mfr. Part No.3SB3400-1PE
BrandSiemens
MYR32.23
Each
units
Siemens 3SB3 Light Block - White 24 V LED Screw No - Yes - -
RS Stock No. 609-2825
Mfr. Part No.ZB4BZ141
MYR76.32
Each
units
Harmony XB4 Contact Block 1NO 2NC - 600 V - Screw Yes - - - -
RS Stock No. 746-9201
Mfr. Part No.ZBE1026
MYR56.61
Each
units
Harmony XB Contact Block 1NC - - - Screw No - - - -
RS Stock No. 746-9009
Mfr. Part No.XACS101
MYR94.28
Each
units
Harmony XAC Contact Block 1NO - - - - - - - - -
RS Stock No. 260-154
Mfr. Part No.33E01
BrandBACO
MYR22.436
Each (In a Pack of 5)
units
BACO Contact Block 1NC - 600 V - Screw No 10 A - - -
RS Stock No. 411-1952
Mfr. Part No.3SB3400-1PA
BrandSiemens
MYR27.90
Each
units
Siemens 3SB3 Light Block - Yellow 24 V LED Screw No - Yes - -
RS Stock No. 331-0552
Mfr. Part No.ZALVM3
MYR120.42
Each
units
Harmony ZALV Light Block - Green 230 → 240 V ac LED Screw No - Yes - -
RS Stock No. 528-6209
Mfr. Part No.MCB-10B
BrandABB
MYR19.23
Each
units
ABB Modular Contact Block 1NO - - - - No - - - -
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