Type 1+2/Class I+II/Class B+C, is double-layer protection against both overvoltage and overcurrent.
LETOP Type 1 + 2 Surge Protective Device combines the benefits of Type 1 and Type 2 surge protectors to provide more comprehensive protection. It can be installed on the incoming line switchboard of a building or inside a switchboard. The device can handle both high and low energy surges, providing dual protection. With a nominal discharge current between 12.5kA and 25kA, it is designed for 10/350µs waveforms and is able to withstand stronger shocks. Suitable for high security environments such as high-rise buildings, communication base stations and medical equipment, Type 1 + 2 SPD provides a higher level of protection for critical infrastructure and sensitive equipment.