DEHN DEHNcord Type 2 2-Pole Surge Arrester 900430

Voltage protection level ≤ 1.2 kV with 10 kA max discharge current — the DEHNcord 900430 is a Type 2 surge arrester for 230 V AC single-phase systems. This 2-pole unit is pre-wired with 0.5 m H07RN-F 3G1.5 mm² cables for in-line installation, with IP65 protection and thermal disconnect status indication.

Overview

The DEHNcord 900430 is a varistor-based surge protective device (SPD) designed to protect electrical equipment from transient overvoltages. It is intended for use in low-voltage power distribution systems, particularly in applications where equipment is connected via a cable and requires local protection. The device is suitable for both indoor and outdoor use due to its IP65-rated UV-resistant thermoplastic housing.

What stands out

• Compact in-line design with pre-wired connection cables for easy installation.
• Thermal disconnect with visual status indication for quick maintenance checks.
• High short-circuit withstand capability of 25 kA with a 32 A gG fuse.
• Wide operating temperature range from -40 °C to +80 °C.

Technical details

• Surge arrester type: Type 2
• Number of poles: 2
• Nominal voltage (U_N): 230 V AC (50/60 Hz)
• Max continuous operating voltage (U_C): 255 V AC (50/60 Hz)
• Nominal discharge current (I_n): 5 kA (8/20 µs)
• Max discharge current (I_max): 10 kA (8/20 µs)
• Voltage protection level (U_p): ≤ 1.2 kV
• Response time (t_A): < 25 ns
• Degree of protection: IP65
• Mounting type: In-line / cable-mounted
• Connection type: Pre-wired connection cables (H07RN-F 3G1.5 mm²)
• Cable length (input/output): 0.5 m / 0.5 m
• Operating temperature range: -40 °C to +80 °C
• Standards compliance: IEC 61643-11 / EN 61643-11
• Protection technology: Varistor-based
• Short-circuit withstand capability (I_SCCR): 25 kA (with 32 A gG fuse)
• Thermal disconnect: Yes, with visual status indication
• Housing material: UV-resistant thermoplastic

Our verdict

The DEHNcord 900430 offers robust Type 2 surge protection in a convenient pre-wired package. Its IP65 rating and wide temperature range make it suitable for demanding environments, while the thermal disconnect feature enhances safety and maintenance efficiency.