DEHN DG M TN 275 FM Type 2 Surge Arrester 2-Pole 275V AC 40kA

Handles surge currents up to 40 kA (8/20 µs) with a voltage protection level of ≤1.2 kV, keeping sensitive equipment safe from transient overvoltages.

Overview

The DEHNguard DG M TN 275 FM is a modular Type 2 surge protective device for 2-pole TN systems. It is engineered for DIN rail mounting and features a remote signaling contact for status monitoring. With a nominal discharge current of 20 kA and maximum discharge current of 40 kA, it provides robust protection in low-voltage installations.

What stands out

• High discharge capacity: 40 kA max (8/20 µs)
• Low voltage protection level: ≤1.2 kV
• Fast response: ≤25 ns
• Remote signaling contact for monitoring
• Compact 2-module width (approx. 36 mm)

Technical details

• SPD type: Type 2
• Network system: TN
• Number of poles: 2
• Max. continuous operating voltage (Uc): 275 V AC
• Nominal discharge current (In): 20 kA (8/20 µs)
• Max. discharge current (Imax): 40 kA (8/20 µs)
• Voltage protection level (Up): ≤1.2 kV
• Response time (tA): ≤25 ns
• Short-circuit withstand capability (Isccr): 50 kAeff
• Remote signaling contact: Yes
• Mounting type: 35 mm DIN rail
• Module width: 2 modules
• Connection type: Screw terminal
• Conductor cross-section solid: 1.5–35 mm²
• Conductor cross-section stranded: 1.5–25 mm²
• Operating temperature range: -40 °C to +80 °C
• Degree of protection: IP20

Our verdict

A reliable Type 2 surge arrester for TN systems, offering high discharge capacity and remote monitoring in a compact DIN rail format.