sre-340 chint 40a 3p panel mounted door interlock isolator
Chint SRE-340 40A 3 pole rotary isolator switch designed for safe local isolation of three-phase motors, machinery, HVAC equipment and electrical loads.
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The Chint SRE-340 is a dependable 40A rotary isolator switch designed for safe local isolation of electrical equipment in commercial, industrial and building services applications. It provides a clear and accessible method of disconnecting electrical loads for maintenance, inspection and emergency isolation.
As part of the Chint SRE Series rotary isolator range, this model is suitable for use with motors, pumps, fans, HVAC plant, machinery and general electrical equipment requiring reliable manual isolation. Its robust enclosed construction makes it a practical choice for demanding environments where safety, durability and ease of operation are important.
With a 40A current rating, 3 pole configuration and suitability for low voltage AC switching applications, the SRE-340 is ideal for electrical contractors, panel builders and maintenance engineers requiring a compact and reliable rotary isolator for three-phase equipment isolation.
Key Advantages
Reliable 40A rotary isolator for electrical equipment isolation.
3 pole switching suitable for three-phase applications.
Provides safe local disconnection for maintenance and servicing.
Clear rotary handle operation for simple ON/OFF isolation.
Suitable for motors, machinery, HVAC systems and building services plant.
Manufactured by Chint for dependable switching performance.
Key Features
Chint SRE Series rotary isolator switch.
40A rated current.
3 pole configuration.
Designed for low voltage AC switching and isolation.
Rotary handle operation.
Suitable for local equipment isolation.
Robust enclosed construction.
Ideal for commercial and industrial electrical installations.
Safe Local Isolation for Electrical Equipment
Rotary isolator switches such as the Chint SRE-340 are used to disconnect electrical equipment from the supply before maintenance, repair or inspection work is carried out. This helps improve electrical safety by providing a visible and accessible isolation point close to the equipment being controlled.
The SRE-340 is well suited to three-phase equipment installations where dependable switching, compact construction and clear manual operation are required. It is a practical choice for contractors working on industrial machinery, HVAC equipment, pumps, fans and general electrical distribution systems.
Typical Applications
Three-phase motor isolation.
Industrial machinery and equipment.
HVAC systems and ventilation equipment.
Pumps, fans and building services plant.
Commercial electrical installations.
Local isolation for maintenance and servicing.
Control panels and equipment enclosures.
Technical Specifications
Current
40 A
Phase
Three Phase
Manufacturer
Chint
Series
SRE
Model
SRE-340
Product type
Rotary isolator switch
Rated current
40A
Number of poles
3 pole
Operation
Rotary handle ON/OFF switching
Application
Local electrical isolation
Suitable for
Three-phase motors, machinery and equipment
Mounting type
Surface / equipment mounting
Product category
Isolator switches
Alternative SKU
SRE340
Frequently Asked Questions
What is the Chint SRE-340 used for?
The Chint SRE-340 is used as a 40A rotary isolator switch for safely disconnecting electrical equipment during maintenance, servicing or emergency isolation.
What current rating does the SRE-340 have?
The SRE-340 has a rated current of 40A.
Is the Chint SRE-340 suitable for three-phase equipment?
Yes. The SRE-340 is a 3 pole isolator, making it suitable for many three-phase electrical equipment isolation applications.
Where is this rotary isolator typically installed?
It is typically installed close to motors, machinery, HVAC equipment, pumps, fans and other electrical loads requiring local isolation.
What does rotary isolator mean?
A rotary isolator is a manually operated switch with a rotating handle that disconnects an electrical circuit to provide safe local isolation.
Trusted by Electrical Professionals Worldwide
Chint rotary isolators are trusted by electricians, contractors and maintenance engineers to provide safe, dependable and accessible equipment isolation in commercial and industrial electrical installations.
Current
40 A
Phase
Three Phase
Manufacturer
Chint
Series
SRE
Model
SRE-340
Product type
Rotary isolator switch
Rated current
40A
Number of poles
3 pole
Operation
Rotary handle ON/OFF switching
Application
Local electrical isolation
Suitable for
Three-phase motors, machinery and equipment
Mounting type
Surface / equipment mounting
Product category
Isolator switches
Alternative SKU
SRE340
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.
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Customers supported
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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...