DEHN DVR 2 BY S 150 FM Combined Lightning Current and Surge Arrester Type 1+2, 2-pole, 230 V AC, DIN Rail Mount, with Remote Signalling 928430

The DEHN DVR 2 BY S 150 FM combines lightning current and surge protection in a single compact device, eliminating the need for separate Type 1 and Type 2 arresters. Its 2-pole design protects all common low-voltage system configurations, while the integrated remote signalling contact enables proactive maintenance monitoring.

Highlights

• Combined Type 1 + Type 2 arrester according to EN 61643-11 / IEC 61643-11
• High discharge capacity: 25 kA (10/350 µs) per pole
• Low voltage protection level: ≤ 1.2 kV
• Follow current extinguishing capability up to 50 kA rms
• Potential-free changeover contact for remote monitoring
• DIN rail mountable, thermoplastic housing in red

In daily use

Install the DVR 2 BY S 150 FM on a 35 mm DIN rail in the main distribution board. Connect the conductors to the screw terminals, which accept up to 35 mm² stranded wire. The remote signalling contact allows integration into building management systems for immediate fault indication. The device operates reliably from -40 °C to +80 °C.

Full specifications

• Arrester type: Combined lightning current and surge arrester
• Protection class: Type 1 + Type 2
• Nominal voltage (U_N): 230 V AC
• Max. continuous operating voltage (U_C): 150 V AC
• Nominal lightning impulse current (I_imp) (10/350 µs): 25 kA total
• Nominal discharge current (I_n) (8/20 µs): 25 kA total
• Max. discharge current (I_max) (8/20 µs): 50 kA total
• Voltage protection level (U_P) at I_imp: ≤ 1.2 kV
• Voltage protection level (U_P) at I_n: ≤ 0.8 kV
• Follow current extinguishing capability (I_fi): 50 kA rms
• Short-circuit withstand capability (I_SCCR): 50 kA rms
• Number of poles: 2
• Protection paths: L-N, L-PE, N-PE
• Mounting type: 35 mm DIN rail
• Remote monitoring: Yes (potential-free changeover contact)
• Operating temperature range: -40 °C to +80 °C
• Degree of protection: IP20
• Connection type: Screw terminals
• Max. conductor cross-section: 35 mm² stranded / 25 mm² solid
• Housing material: Thermoplastic, red

Final note

With its robust design and comprehensive protection, the DVR 2 BY S 150 FM is a reliable choice for safeguarding electrical installations against lightning and surge damage.