Push Button Contact Blocks & Light Blocks

Contact blocks are the essential electrical circuit connectors that are used to turn on (make) or turn off (break) an electrical circuit. Contact blocks are commonly integrated with switches, relays, and circuit breakers. Once these devices are active, the contact block allows current to flow and complete a circuit.

Types of Electrical Contact Block

Contact blocks are usually designed as an accessory to fit an electrical 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 include:

• 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)

These configurations provide flexibility in controlling electrical circuits, ensuring your push button system meets your specific operational requirements.

Light Blocks

Push button light blocks are add-on components that mount to the rear of a push button switch, serving as visual indicators. When the push button is pressed, the light block illuminates, shining through the button head to provide clear status indication.

Types of Light Blocks

Light blocks are available in two types:

• LED Light Blocks: Featuring a fixed, long-lasting LED, these light blocks offer energy efficiency and vibrant illumination. They are available in a variety of colours to match or complement the push button’s colour scheme.
• Incandescent Light Blocks: Equipped with a replaceable incandescent bulb, these light blocks provide a classic white light that shines through the button head to produce the desired colour.

How to Choose the Right Push Button Contact Block

Selecting the appropriate push button contact block involves considering several key factors:

Voltage and Current Ratings

Ensure the contact block's voltage and current ratings are compatible with your circuit's electrical requirements. Choose a contact block that can safely handle the maximum voltage and current that will flow through the circuit.

Circuit Complexity

The number and type of contacts required depend on the complexity of your circuit. For simple on/off control, a single-pole contact block may suffice. However, more complex circuits may require multiple poles or a combination of normally open and normally closed contacts.

Installation Environment

Consider the environment in which the push button and contact block will be installed. If the location is exposed to dust, moisture, or other contaminants, choose a contact block with an appropriate IP rating to ensure protection and reliable operation.

Environmental Factors

In addition to IP rating, consider other environmental factors such as temperature, vibration, and shock. Select a contact block that can withstand the specific conditions of your application.

Design & Aesthetics

Push button contact blocks are available in various colours and materials to match your aesthetic preferences and blend seamlessly with your overall design. Consider the colour and material of the push button when choosing a contact block.

Industrial Application of Push Button Contact Blocks

Push button contact blocks are versatile components that find widespread use in various industrial sectors, enabling control and automation of diverse processes and equipment:

HVAC Industry

In heating, ventilation, and air conditioning (HVAC) systems, push button contact blocks are used to control the operation of fans, pumps, compressors, and other equipment. They provide a user-friendly interface for adjusting temperature, airflow, and other parameters.

Packaging Industry

In packaging machinery, push button contact blocks control various processes, such as conveyor belts, sealing machines, and labelling equipment. They enable operators to initiate, stop, or adjust operations as needed, ensuring efficient and safe packaging processes.

Power Distribution

Push button contact blocks are used in power distribution systems to control the flow of electricity to different circuits or equipment. They provide a safe and reliable way to switch power on or off, protecting both personnel and equipment from electrical hazards.

Material Handling

In material handling applications like cranes, hoists, and conveyor systems, push button contact blocks enable operators to control movement, speed, and direction. They facilitate efficient and safe material handling operations, reducing the risk of accidents and damage.

Machine Tool Operations

Push button contact blocks are commonly used in machine tool operations, such as lathes, milling machines, and drills. They provide convenient control for starting, stopping, and adjusting the machine's operation, enhancing productivity and safety.

Elevators and Lifts

In elevators and lifts, push button contact blocks are used to control the movement and positioning of the lift car. They enable passengers to select their desired floor and provide a safe and reliable way to stop the lift in case of an emergency.

Production Lines

Push button contact blocks are extensively used in production lines across various industries. They control the start, stop, and speed of conveyor belts, assembly machines, and other equipment, facilitating efficient and synchronised production processes.

Delivery Information

RS offers fast delivery of push button contact blocks and other push button switches like emergency buttons and momentary switches across Malaysia. For more details on delivery services and fees, please refer to our Delivery page.