Why Choose the Mersen 83020121 Surge Protection Device?
The Mersen 83020121 is a premium Type 2 surge protection device (SPD) designed to protect low voltage electrical installations from transient overvoltages caused by switching operations, utility disturbances and indirect lightning strikes. As part of the trusted Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for commercial, industrial and automation applications.
The STPT2-40K150V-2PM is designed for 120 V AC single phase TNS (1Ph+N) electrical systems and provides a 40 kA maximum discharge current (Imax) together with a 20 kA nominal discharge current (In). Its 2+0 TNS configuration protects both line and neutral conductors, while the integrated remote indication contact enables continuous monitoring of the device status from a control system or alarm circuit.
With a 150 V AC maximum continuous operating voltage (Uc), compact 2 pole, 2 module pluggable construction and DIN rail mounting, the Mersen 83020121 is ideal for protecting switchboards, distribution panels, industrial control panels and sensitive electronic equipment.
Key Advantages
- Compact Type 2 surge protection device for low voltage installations.
- 40 kA maximum discharge current (Imax).
- 20 kA nominal discharge current (In).
- 150 V AC maximum continuous operating voltage (Uc).
- 2+0 TNS configuration for single phase systems.
- Integrated remote indication for continuous monitoring.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection.
- 40 kA Imax (8/20 μs).
- 20 kA In (8/20 μs).
- 120 V AC nominal operating voltage.
- 150 V AC Uc.
- 1Ph+N, 2+0 TNS configuration.
- Remote indication with pluggable DIN rail mounted design.
Reliable Protection Against Electrical Surges
Type 2 surge protection devices divert damaging transient overvoltages away from connected equipment, helping minimise equipment failures, reduce maintenance costs and improve the reliability of low voltage electrical systems.
The Mersen Surge-Trap® STPT2 Series combines high surge current capability with replaceable pluggable cartridges and integrated remote monitoring, making it an ideal solution for electrical distribution panels, industrial control systems and commercial installations.
Typical Applications
- Single phase 120 V TNS electrical systems.
- Commercial distribution boards.
- Industrial control panels.
- PLC and automation systems.
- Building electrical services.
- Low voltage power distribution equipment.
