IEC/EN 60 947-3 For NH-fuse links size 000/00 in accordance with IEC/EN60 269-2 VDE 0636-2. Mersen MULTIBLOC® NH Fuse Switch Disconnectors Size 00.ST9 Series. From Mersen, a range of IEC fuse switch disconnectors to accommodate NH fuse links in accordance with IEC/EN 60269-2, VDE 0636-2 SIZE 00. The MULTIBLOC® 00.ST9 series are designed for bottom fitting and panel installation up to 160A. Suitable for mounting on TS35/15 DIN Rail EN60715. Features and Benefits. DIN Rail mounting to EN60 715 – optional IP30 rated Sealing and padlocking device integrated in switch door cover 81 mm Installation depth Modular system cover for cable termination area can be extended. Applications. Transmitting stations Meter distribution units House incoming units