The IMO B4TU20 is a reliable contact block designed for use with IMO industrial pushbutton and control station assemblies. As part of the IMO B4 series, it provides dependable switching functionality with two normally open contacts, making it suitable for machine control panels, automation systems and operator interface applications.
This contact block is engineered for secure electrical connection and straightforward installation within IMO pushbutton assemblies. Its dual normally open contact configuration allows a single operator action to control two separate circuits simultaneously, providing flexible solutions for industrial control applications.
With a 2 normally open contact configuration, screw terminal connection and suitability for IMO B3 series pushbuttons, the IMO B4TU20 provides a versatile switching solution for industrial control circuits and automation equipment.
Key Advantages
Reliable contact block for industrial control applications.
2 normally open (NO) contacts for flexible circuit switching.
Designed for use with IMO B3 series pushbuttons.
Compact design for easy control panel integration.
Suitable for machine control and automation systems.
Provides dependable switching for operator interface applications.
Key Features
IMO B4 series contact block.
2 normally open (NO) contacts.
Screw terminal connection.
6 A maximum contact current.
400 V AC maximum contact voltage.
Rear-mounted contact block design.
Compatible with IMO B3 series pushbuttons.
Suitable for industrial control panels and automation equipment.
Reliable Switching for Industrial Control Systems
Contact blocks such as the IMO B4TU20 provide the electrical interface required for pushbuttons, selector switches and industrial operator controls. They allow machinery operators to control automated systems while providing reliable switching feedback to control circuits.
The IMO B4 series is designed for industrial automation applications where dependable operation, flexible configuration and simple installation are required. Its compact construction makes it suitable for a wide range of machine control and panel-building applications.
Typical Applications
Industrial control panels.
Machine start and stop stations.
Automation equipment.
Operator control stations.
Pushbutton and selector switch assemblies.
OEM machinery control systems.
Technical Specifications
HS Code
8536508000
Country of Manufacture
Austria
Manufacturer
IMO
Series
B4 Contact Blocks
Model
B4TU20
Product type
Contact block
Contact configuration
2 normally open (NO)
Connection type
Screw terminals
Maximum contact current
6 A
Maximum contact voltage
400 V AC
Compatible series
IMO B3 Series Push Buttons
Frequently Asked Questions
What is the IMO B4TU20 used for?
The IMO B4TU20 is a contact block used with industrial pushbuttons and control assemblies to provide reliable switching contacts.
How many contacts does the B4TU20 have?
The B4TU20 features 2 normally open (NO) contacts for switching control circuits.
What is the contact rating of the B4TU20?
The contact block has a maximum rating of 6 A at 400 V AC.
Which devices is this contact block compatible with?
The B4TU20 is designed for use with IMO B3 series pushbuttons.
Where is this contact block typically installed?
The B4TU20 is typically installed inside industrial control panels, machine operator stations and automation equipment.
Trusted by Industrial Control Engineers
IMO contact blocks provide reliable switching, flexible configuration and dependable performance for industrial automation and machine control applications.
HS Code
8536508000
Country of Manufacture
Austria
Manufacturer
IMO
Series
B4 Contact Blocks
Model
B4TU20
Product type
Contact block
Contact configuration
2 normally open (NO)
Connection type
Screw terminals
Maximum contact current
6 A
Maximum contact voltage
400 V AC
Compatible series
IMO B3 Series Push Buttons
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
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Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...