DEHN DG M PV2 SCI 1000 Type 2 Surge Arrester for Photovoltaic Systems, 3-Pole, 1000 V DC, 40 kA, DIN Rail Mount 952514

For solar installers and PV system operators, the DEHN DG M PV2 SCI 1000 provides reliable protection against surge voltages on the DC side of photovoltaic installations. This 3-pole Type 2 surge arrester is designed for 1000 V DC systems and features integrated SCI (Short Circuit Interruption) technology, ensuring safe operation even under high short-circuit currents. Its compact DIN rail mount design makes it ideal for use in combiner boxes and inverter stations.

Key specifications

• Type: Type 2 surge protective device according to EN 50539-11
• Max. continuous operating voltage (Ucpv): 1000 V DC
• Nominal discharge current (In): 20 kA (8/20 µs)
• Max. discharge current (Imax): 40 kA (8/20 µs)
• Voltage protection level (Up): ≤ 4.0 kV
• Number of poles: 3 (L+/PE, L-/PE)
• Short-circuit withstand capability (Iscpv): 1000 A DC
• Response time: < 25 ns
• Mounting: 35 mm DIN rail
• Housing material: Thermoplastic, red, UL 94 V-0
• Operating temperature range: -40 °C to +80 °C
• Protection degree: IP20
• Status indication: Visual (green/red flag)

Why choose it

The DEHNguard M PV2 SCI 1000 combines proven DEHN protection technology with integrated short-circuit interruption, eliminating the need for additional backup fuses. Its high discharge capacity and low voltage protection level ensure long-term reliability for your PV investment.

Ideal use cases

• Surge protection for photovoltaic string inverters
• DC combiner boxes in utility-scale solar plants
• Rooftop PV systems up to 1000 V DC

Good to know

The device is compliant with EN 50539-11 and IEC 61643-31. Its visual status indicator allows quick on-site inspection without additional tools.