Why Choose the Mersen 44120001 Surge Protection Device?
The Mersen 44120001 is a high-quality surge protection device (SPD) designed to safeguard low-voltage electrical installations against damaging transient overvoltages caused by lightning activity and electrical switching events. Manufactured by Mersen, a global leader in electrical protection solutions, this device helps improve system reliability while protecting valuable equipment from unexpected surge damage.
Its compact modular design allows installation within electrical distribution boards and control panels, making it suitable for a wide range of commercial and industrial applications. The robust construction ensures dependable long-term operation with minimal maintenance requirements.
By diverting transient surge energy safely away from connected equipment, the Mersen 44120001 helps reduce costly downtime, extends equipment life and supports compliance with modern surge protection practices.
Key Advantages
Protects electrical installations against transient overvoltages.
Helps reduce damage caused by lightning-induced surges.
Improves the reliability of electrical distribution systems.
Compact modular design for straightforward installation.
Suitable for industrial and commercial environments.
Designed for long-term dependable operation.
Supports protection of sensitive electronic equipment.
Key Features
Manufactured by Mersen.
Surge protection device for low-voltage installations.
Compact modular construction.
DIN rail mounting.
Industrial-grade construction.
Suitable for electrical distribution systems.
Designed for commercial and industrial applications.
Protecting Critical Electrical Equipment
Voltage transients generated by lightning activity and switching operations can significantly reduce the lifespan of electrical and electronic equipment. Installing a surge protection device helps divert these damaging surge currents away from sensitive equipment, improving operational reliability and reducing maintenance costs.
Mersen surge protection products are widely specified across industrial, commercial and infrastructure projects where dependable protection of power distribution systems is essential.
Typical Applications
Industrial electrical distribution boards.
Commercial switchboards.
Automation and control panels.
Building services installations.
Manufacturing facilities.
Critical infrastructure projects.
General low-voltage electrical systems.
Technical Specifications
Voltage
230 V
Phase
Single Phase
Manufacturer
Mersen
Manufacturer part number
44120001
Product type
Surge protection device
Mounting type
DIN rail
Application
Low-voltage electrical installations
Installation
Distribution boards and control panels
RoHS compliant
Yes
Frequently Asked Questions
What is the Mersen 44120001 used for?
The Mersen 44120001 is designed to protect low-voltage electrical installations and connected equipment against damaging transient overvoltages.
Where is this device typically installed?
It is commonly installed on a DIN rail inside electrical distribution boards and industrial control panels.
What types of installations is it suitable for?
The device is suitable for commercial buildings, industrial facilities and other low-voltage electrical systems requiring surge protection.
Why is surge protection important?
Surge protection devices help reduce the risk of damage caused by lightning strikes, switching events and other transient overvoltages, improving equipment reliability and reducing downtime.
Is the Mersen 44120001 suitable for industrial applications?
Yes. It is designed for use in demanding industrial and commercial electrical installations where reliable surge protection is required.
Trusted Electrical Protection from Mersen
Mersen is recognised worldwide for manufacturing high-quality electrical protection products that help improve system reliability and protect valuable equipment from electrical disturbances.
Voltage
230 V
Phase
Single Phase
Manufacturer
Mersen
Manufacturer part number
44120001
Product type
Surge protection device
Mounting type
DIN rail
Application
Low-voltage electrical installations
Installation
Distribution boards and control panels
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...