WJ Furse, D1 Lightning / Surge Arrester 280 V Maximum Voltage Rating 6.25kA Maximum Surge Current Mains Surge Protector

This lightning and surge arrester is vital for protecting electrical systems from voltage spikes and surges. It prevents damage caused by lightning or sudden power fluctuations, safeguarding valuable equipment. With a maximum voltage rating of 280 V, this device is suitable for diverse applications, ensuring operational reliability and enhanced durability in various environments.

• Handles a maximum surge current of 6.25 kA
• Designed for easy installation on DIN rail systems
• Compact dimensions allow for flexible installation
• Functions as a mains surge protector, enhancing system reliability

• Used in commercial buildings for improved electrical safety
• Ideal for safeguarding sensitive electronic devices and machinery

This device is designed to work in extreme conditions, with an operating range from -40°C to +70°C, making it suitable for various industrial applications.

Regular visual inspections should be conducted to detect any signs of wear or damage, ensuring it remains functional and effective in surge protection.

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 spikes are usually caused by lightning strikes and can reach up to 6000V, with current surges of over 3000A. The maximum size of the let-through voltage and current inrush 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.