WJ Furse Power distribution systems enhanced surge protector- ESP-D1 Series
Enhanced surge protector for use on power distribution systems
Very low let-through voltage between all lines (L-E, L-N, N-E)
LED status indication with pre-failure warning
Remote indication through volt-free contact
Robust steel housing
Compact DIN housing
Neutral to Earth voltage warning
ESP 240 D1
ESP 415 D1
Max. Surge Current
40 kA
40 kA
Max. Voltage Rating
280 V
280 V
Mounting Type
Top hat DIN rail
Top hat DIN rail
Operating Temp. Range
-40 to +80°C
-40 to +80°C
Dimensions
90 x 72 x 88 mm
90 x 144 x88 mm
Surge Protection Devices, SPDs (DIN-rail)
Voltage surges, often referred to as spikes or transients are typically caused by switching of fluorescent lights, fuses blowing or nearby lightning activity. The worst voltage surges are usually caused by lightning and can reach up to 6000V, with current surges of over 3000A. The maximum size of the voltage and current surges depends on the location within the building's wiring system. BS7671: 2011 Amendment 1 Sections 443 and 534 cover risk assessment and provides guidance on protection of electronic equipment for installation engineers to follow. The fullest information on lightning and surge protection comes from the BSEN 62305 series of standards.
