Block powervision din rail power supply single and 3 phase block pvsl 40024 10 the block pvsl 40024 10 is a din rail 3 phase primary switched mode power supply with line monitoring from blocks economy powervision pvsl 400 series with high power reserves for all automation requirements with a variety of parameter setting and display functions including output current and output voltage monitoring intelligent additional functions for the input power to replace a variety of external devic