DEHNrapid DRL HD 24 Surge Arrester for 2-Wire Interfaces, LSA-PLUS, 24 V DC, 20 kA (8/20 µs), Red 907470

Protect sensitive 2-wire interfaces with the DEHNrapid DRL HD 24, a surge arrester engineered for telecommunication and data lines. With a nominal discharge current of 10 kA per line (20 kA total) and voltage protection level ≤ 150 V, it effectively limits transient overvoltages to safe levels. Direct mounting on LSA-PLUS® disconnection/connection magazines ensures quick installation without additional wiring.

Overview

The DEHNrapid DRL HD 24 is a compact, red thermoplastic module designed for 24 V DC systems. It features a nominal voltage of 24 V DC and a maximum continuous operating voltage of 28 V DC, making it suitable for a wide range of applications. Its high cut-off frequency (>10 MHz) and low insertion loss (<0.2 dB at 10 MHz) preserve signal integrity, while the low capacitance (approx. 10 pF line-line) minimizes interference.

What stands out

• High discharge capacity: 10 kA per line (8/20 µs), 20 kA total
• Low voltage protection level: ≤ 150 V line-line and line-PG
• Wide operating temperature range: -40 °C to +80 °C
• LSA-PLUS® compatible terminals for tool-free installation
• Robust thermoplastic housing in red for easy identification

Technical details

• Nominal voltage (Un): 24 V DC
• Max. continuous operating voltage (Uc): 28 V DC
• Nominal discharge current (In) line-line (8/20 µs): 10 kA
• Nominal discharge current (In) line-PG (8/20 µs): 10 kA
• Total nominal discharge current (In total) (8/20 µs): 20 kA
• Voltage protection level (Up) line-line at In: ≤ 150 V
• Voltage protection level (Up) line-PG at In: ≤ 150 V
• Cut-off frequency (fG) (3 dB): > 10 MHz
• Insertion loss (aE) at 10 MHz: < 0.2 dB
• Capacitance (C) line-line: approx. 10 pF
• Operating temperature range: -40 °C to +80 °C
• Mounting type: Direct mounting on LSA-PLUS® disconnection/connection magazines
• Housing material: Thermoplastic, red
• Protection degree: IP20

Our verdict

The DEHNrapid DRL HD 24 is a reliable surge protection solution for low-voltage data lines, offering high discharge capacity and minimal signal distortion. Its LSA-PLUS® compatibility and wide temperature range make it a versatile choice for industrial and telecommunications environments.