Why Choose the Mersen 44020208 K2-2PG320 Surge Protection Device?
The Mersen 44020208, also identified as the K2-2PG320, is a dependable Type 2 surge protection device (SPD) engineered to protect single-phase low-voltage electrical installations against transient overvoltages. As part of the trusted Mersen Surge-Trap K2 series, it provides combined line-to-neutral and neutral-to-earth protection for commercial, industrial and infrastructure applications.
Designed with a compact pluggable construction, the K2-2PG320 enables quick inspection and replacement of protection cartridges without removing the complete DIN-rail base. A built-in visual status indicator allows maintenance personnel to verify the operating condition quickly, helping minimise downtime while maintaining continuous protection.
With a 277 V AC nominal operating voltage, a 320 V AC maximum continuous operating voltage between line and neutral, a 20 kA nominal discharge current and a 50 kA maximum discharge current, the Mersen 44020208 provides reliable protection against switching transients and lightning-induced surges. Its compact two-module DIN-rail design makes it ideal for modern distribution boards, electrical switchgear and industrial control panels.
Key Advantages
- Reliable Type 2 surge protection for single-phase electrical installations.
- Combined L-N and N-PE protection in one compact device.
- 50 kA maximum discharge current for effective transient overvoltage protection.
- Pluggable cartridge design simplifies maintenance and replacement.
- Visual operating status indicator for quick inspection.
- Suitable for TT and TN-S low-voltage electrical systems.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- 1+1 internal configuration.
- Two-pole design.
- 277 V AC nominal operating voltage.
- 320 V AC maximum continuous operating voltage (L-N).
- 255 V AC maximum continuous operating voltage (N-PE).
- 20 kA nominal discharge current.
- 50 kA maximum discharge current.
- Dynamic thermal disconnection technology.
- Visual operating status indicator.
- Compact pluggable DIN-rail construction.
Reliable Surge Protection for Single-Phase Installations
Transient overvoltages caused by indirect lightning strikes, switching operations and inductive loads can damage sensitive equipment such as PLCs, drives, power supplies and communication devices. Installing a quality surge protection device helps reduce equipment failures, minimise downtime and improve electrical system reliability.
The Mersen Surge-Trap K2 range combines high discharge capability with advanced thermal disconnection technology and replaceable protection cartridges. This allows maintenance to be completed quickly while ensuring continuous protection for critical electrical infrastructure.
Typical Applications
- Single-phase distribution boards.
- Commercial electrical installations.
- Industrial switchgear and control panels.
- Building management systems.
- Automation and PLC control cabinets.
- Protection of sensitive electronic equipment.
