Why Choose the Mersen CMS14W2 Auxiliary Microswitch Kit?
The Mersen CMS14W2 (manufacturer part number J331185) is a genuine auxiliary microswitch kit designed specifically for the Mersen Modulostar® CMS14 modular fuse holder range. It provides reliable remote signalling of fuse-holder status, allowing integration with PLCs, alarm systems and industrial monitoring equipment for improved maintenance and fault diagnostics.
Engineered as an original Mersen accessory, the CMS14W2 is intended for 3-pole CMS14 fuse holders and enables electrical indication when fitted to compatible prepared fuse holders. The microswitch connects using Faston terminals and is suitable for both low-current signalling and medium-current control circuits.
The CMS14W2 is ideal for industrial automation systems where remote indication of fuse operation, holder position or fuse presence helps reduce downtime and improve preventative maintenance. It is designed exclusively for use with compatible Mersen Modulostar® CMS14 fuse holder assemblies.
Key Advantages
Genuine Mersen OEM auxiliary microswitch kit.
Designed specifically for 3-pole CMS14 Modulostar® fuse holders.
Provides reliable remote fuse-status signalling.
Suitable for PLCs, alarm systems and SCADA applications.
Supports preventative maintenance and reduced machine downtime.
Key Features
Mersen Auxiliary Switch Accessories.
Catalogue number: CMS14W2.
Manufacturer part number: J331185.
Auxiliary microswitch kit.
Designed for 3-pole CMS14 fuse holders.
Faston lug electrical connections.
Suitable for AC and DC signalling circuits.
Supports fuse melting, pre-isolation and fuse presence functions depending on configuration.
Original Mersen replacement accessory.
Compact modular construction.
Reliable Remote Fuse Status Monitoring
The Mersen CMS14W2 enables compatible Modulostar® CMS14 fuse holders to provide remote electrical signalling for industrial monitoring systems. Depending on the installation, the microswitch can indicate fuse operation, pre-isolation during holder opening or fuse presence, providing valuable diagnostic information to operators and maintenance personnel.
Designed for long-term industrial use, the CMS14W2 integrates easily into control panels and automation systems, helping reduce troubleshooting time while improving overall system availability.
Typical Applications
Industrial control panels.
PLC monitoring systems.
Remote fuse-status indication.
Machine safety and diagnostics.
OEM machinery.
Electrical switchboards.
Industrial automation systems.
Power distribution equipment.
Technical Specifications
Phase
Three Phase
Manufacturer
Mersen
Series
Auxiliary Switches for Modulostar® Fuse Holders
Catalogue number
CMS14W2
Manufacturer part number
J331185
Product type
Auxiliary microswitch kit
Compatible fuse holders
Modulostar® CMS14 (3-pole)
Rated insulation voltage
250 V AC
AC15 utilisation category
4 A at 24/48 V, 3 A at 127 V, 2.5 A at 240 V
DC13 utilisation category
3 A at 24 V, 1 A at 48 V, 0.2 A at 127 V, 0.1 A at 240 V
Minimum operating voltage/current
4 V / 1 mA
Maximum switching current
5 A
Connection type
Faston lugs
Package quantity
1
Product weight
Approximately 25 g
RoHS compliant
Yes
Frequently Asked Questions
What is the Mersen CMS14W2?
The CMS14W2 is a genuine Mersen auxiliary microswitch kit designed for compatible 3-pole Modulostar® CMS14 fuse holders.
What does the CMS14W2 do?
It provides remote electrical signalling for fuse operation, holder opening or fuse presence, depending on the installation and fuse holder configuration.
Which fuse holders is it compatible with?
The CMS14W2 is designed specifically for prepared 3-pole Mersen Modulostar® CMS14 fuse holders.
How is the microswitch connected?
The auxiliary microswitch uses standard Faston lug terminals for quick electrical connection.
Is the CMS14W2 a genuine Mersen accessory?
Yes. The CMS14W2 is an original Mersen OEM accessory designed specifically for the Modulostar® CMS14 fuse holder system.
Trusted by Industrial Electrical Professionals
Mersen auxiliary microswitch accessories are trusted by panel builders, OEM manufacturers and industrial engineers to provide dependable remote monitoring, improved diagnostics and seamless integration with industrial automation systems.
Phase
Three Phase
Manufacturer
Mersen
Series
Auxiliary Switches for Modulostar® Fuse Holders
Catalogue number
CMS14W2
Manufacturer part number
J331185
Product type
Auxiliary microswitch kit
Compatible fuse holders
Modulostar® CMS14 (3-pole)
Rated insulation voltage
250 V AC
AC15 utilisation category
4 A at 24/48 V, 3 A at 127 V, 2.5 A at 240 V
DC13 utilisation category
3 A at 24 V, 1 A at 48 V, 0.2 A at 127 V, 0.1 A at 240 V
Minimum operating voltage/current
4 V / 1 mA
Maximum switching current
5 A
Connection type
Faston lugs
Package quantity
1
Product weight
Approximately 25 g
RoHS compliant
Yes
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
Trusted Manfacturers
● frequently asked questions
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...