K2-4P440 Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA IT
Mersen 44020420 Type 2 surge protection device from the Surge-Trap K2 Series designed to protect low-voltage electrical installations against transient overvoltages.
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Why Choose the Mersen 44020420 Surge Protection Device?
The Mersen 44020420 is a Type 2 surge protection device (SPD) from the Mersen Surge-Trap® K2 Series, engineered to protect low-voltage electrical installations against transient overvoltages caused by indirect lightning strikes and electrical switching events. Designed for dependable performance, it helps safeguard sensitive electrical and electronic equipment in commercial and industrial environments.
Its compact DIN rail construction allows straightforward installation inside electrical distribution boards and control panels, while its pluggable protection module simplifies maintenance by allowing replacement without removing the complete base assembly.
The Mersen K2 Series combines high surge current capability, visual status indication and robust construction to provide reliable long-term protection for power distribution systems, helping reduce equipment downtime and maintenance costs.
Key Advantages
Reliable Type 2 surge protection for low-voltage installations.
Protects equipment against lightning-induced and switching overvoltages.
Suitable for commercial and industrial electrical systems.
Designed for long service life and dependable operation.
Key Features
Mersen Surge-Trap® K2 Series.
Type 2 / IEC Class II surge protection device.
Compact modular construction.
DIN rail mounting.
Visual operational status indicator.
Pluggable surge protection cartridge.
High surge current capability.
Designed for industrial and commercial applications.
Reliable Protection for Electrical Systems
Electrical systems can be exposed to damaging transient overvoltages generated by lightning activity, utility switching and inductive loads. A Type 2 surge protection device helps divert these surges safely to earth, reducing the risk of damage to electrical equipment and improving system reliability.
The Mersen Surge-Trap® K2 Series is designed for modern electrical installations where dependable surge protection is essential for maintaining equipment uptime and protecting valuable electrical assets.
Typical Applications
Industrial electrical distribution boards.
Commercial switchboards.
Building services installations.
Automation and control panels.
Motor control centres.
Manufacturing facilities.
Electrical infrastructure projects.
Technical Specifications
Voltage
400 V
Phase
Three Phase
Manufacturer
Mersen
Series
Surge-Trap® K2 Series
Manufacturer part number
44020420
Product type
Type 2 surge protection device
IEC classification
Class II
Mounting type
DIN rail
Protection rating
IP20
Visual status indication
Yes
Pluggable module
Yes
RoHS compliant
Yes
HS Code
85363090
Country of Manufacture
Spain
Frequently Asked Questions
What is the Mersen 44020420 used for?
The Mersen 44020420 is a Type 2 surge protection device designed to protect electrical installations and connected equipment against transient overvoltages.
Where is this surge protection device installed?
It is typically installed on a DIN rail inside electrical distribution boards, switchboards and industrial control panels.
Can the protection module be replaced?
Yes. The pluggable module design allows replacement without removing the complete base assembly.
What types of applications is it suitable for?
The device is suitable for commercial buildings, industrial facilities, automation systems and other low-voltage electrical installations.
Why should a Type 2 SPD be installed?
A Type 2 surge protection device helps reduce the risk of equipment damage caused by transient overvoltages resulting from lightning activity and electrical switching events.
Trusted Surge Protection from Mersen
Mersen Surge-Trap® surge protection devices are trusted worldwide to help improve electrical system reliability and protect valuable equipment from damaging transient overvoltages.
Voltage
400 V
Phase
Three Phase
Manufacturer
Mersen
Series
Surge-Trap® K2 Series
Manufacturer part number
44020420
Product type
Type 2 surge protection device
IEC classification
Class II
Mounting type
DIN rail
Protection rating
IP20
Visual status indication
Yes
Pluggable module
Yes
RoHS compliant
Yes
HS Code
85363090
Country of Manufacture
Spain
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...