Overview
The TPKXJ-2 and TPKXJ-4 series are surge protection devices designed for RS485 network lines. They protect 1 or 2 pairs of communication and control wires from surge effects induced by lightning or electromagnetic interference. These compact SPDs feature hybrid GDT and diode technology for fast and effective suppression, offering low residual voltage at all working levels.

Key Features
Interface: Terminal block
Lines protected: 1 pair or 2 pairs
Uc: 8 / 15 / 30 / 65 Vdc (model dependent)
Up: ≤ 12 / 25 / 60 / 75 V
Response time: < 10 ns
Discharge capacity: In = 5 kA, Imax = 10 kA (8/20 μs)
Mounting: DIN rail optional
Housing: PA66 | Protection: IP20
Operating temp: –40°C to +80°C