OBO BETTERMANN CombiController V50 V50-4-280 4-Pole 280V Type 1+2 Surge Arrester (5093513)

The OBO BETTERMANN CombiController V50 V50-4-280 delivers a total impulse current of 50 kA (10/350 µs) across four poles, providing robust protection for low-voltage power distribution systems.

Overview

This Type 1+2 surge arrester is designed for DIN rail mounting and features a nominal discharge current of 20 kA per pole (8/20 µs). With a maximum continuous operating voltage of 280 V AC, it is suitable for 230/400 V AC networks. The unit offers visual status indication and screw terminals for conductors up to 35 mm².

What stands out

• Combined Type 1+2 protection in a single device
• High follow current extinguishing capability of 50 kA
• Fast response time under 25 ns
• Wide operating temperature range from -40 to +80 °C

Technical details

• Nominal voltage (Un): 230/400 V AC
• Max. continuous operating voltage (Uc): 280 V AC
• Number of poles: 4
• Nominal discharge current (In) per pole: 20 kA (8/20 µs)
• Total nominal discharge current (In): 80 kA (8/20 µs)
• Impulse current (Iimp) per pole: 12.5 kA (10/350 µs)
• Total impulse current (Iimp): 50 kA (10/350 µs)
• Voltage protection level (Up): < 1.5 kV
• Follow current extinguishing capability (Ifi): 50 kA
• Response time (tA): < 25 ns
• Mounting: DIN rail 35 mm
• Degree of protection: IP20
• Operating temperature: -40 to +80 °C
• Housing material: Thermoplastic, flame-retardant
• Connection: Screw terminals
• Max. conductor cross-section (rigid): 35 mm²
• Status indication: Visual (green/red)
• Standards: IEC 61643-11, EN 61643-11

Our verdict

The CombiController V50 V50-4-280 is a high-performance surge protection solution for demanding electrical installations, combining Type 1 and Type 2 protection with excellent discharge capabilities.