Block powervision din rail power supply single and 3 phase block pvse 40024 20 the block pvse 40024 20 is a din rail 3 phase primary switched mode power supply from blocks economy powervision pvsb 400 series with large power reserves focussing on the key task of power supply block pvse 40024 20 powervision din rail power supply 24vdc 20a 480w 3 phase