Why Choose the Chint SRE-440 Panel Mounted Door Interlock Isolator?
The Chint SRE-440 is a reliable 4 pole panel mounted door interlock isolator designed for safe manual isolation of electrical circuits in industrial, commercial and control panel applications. Manufactured by Chint, this rotary isolator provides dependable switching performance for machinery, switchboards and electrical distribution systems.
Designed to support operator safety, the SRE-440 includes a door interlock mechanism that helps prevent access to live equipment while the isolator is energised. Its panel mounting format makes it suitable for installation inside electrical enclosures, providing a secure and practical isolation solution for maintenance and servicing tasks.
With a 40 A current rating and 4 pole switching configuration, the Chint SRE-440 is ideal for isolating three-phase circuits where a neutral pole is also required. It is a dependable choice for panel builders, electrical engineers and maintenance teams requiring robust isolation in demanding environments.
Key Advantages
Reliable 4 pole panel mounted isolator for industrial circuit isolation.
40 A current rating suitable for control panels and machinery applications.
Integrated door interlock mechanism helps improve operator safety.
Rotary operation provides clear and simple manual switching.
Suitable for safe isolation during maintenance and servicing.
Manufactured by Chint for dependable electrical performance.
Key Features
Chint SRE Series panel mounted door interlock isolator.
40 A rated current.
4 pole switching configuration.
Panel mounted design for electrical enclosures.
Door interlock function for improved safety.
Rotary isolator mechanism.
Suitable for three-phase electrical systems.
Robust construction for industrial applications.
Safe Electrical Isolation for Control Panels and Machinery
Panel mounted door interlock isolators are used to disconnect electrical supplies before maintenance, inspection or servicing work takes place. By providing a clear and secure means of isolation, they help reduce the risk of accidental contact with live circuits.
The Chint SRE range is widely used in industrial control panels and machinery installations where dependable manual isolation and operator safety are essential.
Typical Applications
Industrial control panels.
Machine isolation systems.
Electrical distribution boards.
Motor control centres.
Switchboards and panel assemblies.
Manufacturing and process equipment.
Technical Specifications
Current
40 A
Phase
Three Phase
Manufacturer
Chint
Series
SRE
Model
SRE-440
Product type
Panel mounted door interlock isolator
Rated current
40 A
Number of poles
4 Pole
Operating mechanism
Rotary
Mounting type
Panel mounting
Application
Electrical isolation
Suitable for
Control panels, machinery and switchboards
Frequently Asked Questions
What is the Chint SRE-440 used for?
The SRE-440 is used to manually isolate electrical circuits for safe maintenance, servicing and equipment shutdown.
What is the current rating of the Chint SRE-440?
The Chint SRE-440 has a 40 A rated current.
How many poles does the SRE-440 have?
This model has a 4 pole switching configuration.
What does the door interlock function do?
The door interlock function helps prevent access to an electrical enclosure while the isolator is in the on position, improving operator safety.
Where is the SRE-440 typically installed?
It is typically installed in industrial control panels, machinery enclosures, switchboards and electrical distribution systems.
Trusted by Electrical Professionals Worldwide
Chint SRE series door interlock isolators are trusted by panel builders, maintenance engineers and electrical professionals for safe isolation, robust operation and dependable performance in industrial installations.
Current
40 A
Phase
Three Phase
Manufacturer
Chint
Series
SRE
Model
SRE-440
Product type
Panel mounted door interlock isolator
Rated current
40 A
Number of poles
4 Pole
Operating mechanism
Rotary
Mounting type
Panel mounting
Application
Electrical isolation
Suitable for
Control panels, machinery and switchboards
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
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Stock lines ready to ship
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Same day dispatches
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Customers supported
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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...