Why Choose the Mersen 83120152 STPT12-25K275V-1P Surge Protection Device?
The Mersen 83120152 STPT12-25K275V-1P is a high-performance Type 1+2 Surge Protection Device (SPD) designed to protect low-voltage electrical installations from lightning currents and transient overvoltages. Built for industrial, commercial and infrastructure applications, it provides dependable protection for electrical distribution systems, control panels and sensitive connected equipment.
Part of the trusted Mersen Surge-Trap® STPT12 Series, this pluggable DIN rail mounted SPD is engineered for installations requiring robust first-stage surge protection. Its compact 1-pole, 2-module format makes it suitable for distribution boards where reliable lightning current discharge and voltage surge protection are required.
Designed for 230 V AC single-phase L-N applications, the STPT12-25K275V-1P provides a powerful 25 kA Iimp (10/350 μs) lightning impulse current rating. With a 275 V UC maximum continuous operating voltage, it is ideal for protecting incoming power supplies and downstream equipment from damaging transient events.
Key Advantages
- Combined Type 1+2 surge protection for lightning currents and transient overvoltages.
- 25 kA Iimp (10/350 μs) lightning impulse current capability.
- Designed for 230 V AC single-phase L-N systems.
- 275 V UC maximum continuous operating voltage.
- 1-pole, 2-module pluggable design for straightforward maintenance.
- DIN rail mounting for quick installation in electrical distribution panels.
- Suitable as first-stage protection in incoming power supply panels.
Key Features
- Mersen Surge-Trap® STPT12 Series - 25kA.
- Type 1+2 / Class I+II surge protection device.
- 25 kA Iimp (10/350 μs) lightning impulse current.
- 100 kA Imax (8/20 μs) maximum discharge current.
- 25 kA In (8/20 μs) nominal discharge current.
- 230 V AC nominal operating voltage.
- 275 V UC maximum continuous operating voltage.
- 1-pole, 2-module pluggable format.
Reliable Protection Against Lightning and Voltage Surges
Surge protection devices help reduce the risk of equipment damage caused by lightning strikes, switching operations and transient overvoltage events. Installing a Type 1+2 SPD at the incoming distribution board provides a robust first line of defence for downstream electrical equipment and control systems.
The Mersen STPT12 Series - 25kA range is engineered for demanding electrical environments, offering dependable surge protection for switchboards, automation systems, industrial machinery, commercial facilities and infrastructure installations where operational continuity is essential.
Typical Applications
- Main electrical distribution boards.
- Single-phase power distribution systems.
- Industrial control panels.
- Commercial building electrical installations.
- Automation and machinery control systems.
- Telecom, IT and data centre power systems.
- Infrastructure and utility installations.
