The OBO BETTERMANN MDP-2 D-24-T-10 is an electronic part with surge arrestor, type 1+2+3, two poles, 0.25kA 8/20us, 20VAC, and DIN (Deutsches Institut für Normung) standard approval. It is designed to provide protection against sudden and large voltage spikes. Additionally, this surge arrestor has a robust construction which makes it suitable for even harsh industrial environments.