Contact blocks are electrical connectors that can break or make an electric circuit. They are connected to relays, switches, and circuit breakers. The activation of this device causes the contact block to allow current flow and complete the circuit. They act as an accessory for fitting a particular device.
The light blocks are considered an add-on block that is mounted on the back of a push-button switch, along with the contact blocks and act as an indicator light. The light blocks get turned on by pressing the push button and are illuminated through a button head.
Types of contact blocks and light blocks
The generic configurations of a contact block can be varying based on the number of open or closed contacts.
The light blocks can be of two types:
Incandescent light blocks
These light blocks have an incandescent lamp that can be changed. They emit a white light visible through the button head to provide the needed colour.
LED light blocks
They have a fixed LED set-up that can be as durable as the push button switch. They are available in different colours to match the colour of the button.
Applications of contact blocks and light blocks
The contact blocks are used with the push button switches for relaying the stop and start signals. They can control the start and stop functions of industrial machines. Some of their applications include switches for lathe machines and emergency buttons for car crushers.