Phoenix contact din rail terminal blocks 16a175a blue and grey phoenix contact 3003363 the phoenix contact din rail terminal block 175a mt 1 5 bu 22 x 42mm has a compact design that enables it to meet the growing demand for ever smaller switching units voltage branching is one of the main functions while remaining bridgable at the centre phoenix contact 3003363 din rail terminal block screw 42mm 175a blue