The Elko-Bis ESPAC V T12 12.5/275 4+0 surge arrester is intended for indoor installation on a TH 35 rail, in main panels of large buildings. It features a visual fault indicator, where the red field in the window indicates the need for replacement.

• Rated voltage: 230 V AC
• Continuous operating voltage: 275 V AC
• Impulse discharge current (10/350 µs): 12.5 kA
• Nominal discharge current (8/20 µs): 30 kA
• Maximum discharge current (8/20 µs): 60 kA
• Protection level at 5 kA: 0.9 kV
• Protection level: 1.5 kV
• SCCR / short-circuit withstand: 50 kA
• Response time: 25 ns
• Short-circuit protection: 160 A gL/gG
• Flexible conductors: 1 mm² / 35 mm²
• Rigid conductors: 1 mm² / 25 mm²
• Protection degree: IP20
• Operating and storage temperature: -40°C ... +80°C
• Permissible operating humidity: 5 - 95 %
• Standards: EN 61643-112012, IEC 61643-112011