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
RS庫存編號 330-9984
製造零件編號ZB4BW0M45
HK$186.00
單位
Harmony XB4 Contact & Light Block 1NO 1NC Red 230 → 240 V ac LED Screw Yes 10 A Yes
RS庫存編號 724-9564
製造零件編號ZBE502
HK$71.40
單位
Harmony XB Contact Block 1NC - - - Screw No - -
RS庫存編號 173-6834
製造零件編號3SU1401-2BB20-1AA0
BrandSiemens
HK$76.97
單位
SIRIUS ACT Light Block - Red 24 V ac/dc LED Screw - 20 mA -
RS庫存編號 746-8412
製造零件編號ZB4BW055
HK$330.00
單位
Harmony XB4 Contact & Light Block 1NO 1NC - 400 V ac - Screw Yes 10 A No
RS庫存編號 179-9421
製造零件編號9001KA51
HK$1,318.42
單位
Harmony 9001K Contact Block SPDT - 125 V dc, 240 V ac - Screw - 0.55 (DC) A, 3 (AC) A -
RS庫存編號 724-9561
製造零件編號ZBE501
HK$71.40
單位
Harmony XB Contact Block 1NO - - - Screw No - -
RS庫存編號 453-2933
製造零件編號3SB3403-1A
BrandSiemens
HK$38.69
單位
Siemens 3SB3 Light Block - - - BA9S Bulb Cage Clamp No - No