Siemens 8WA1 011-1SF12 is a single-pole fuse terminal block for DIN-rail mounting that accepts a standard 5×20 mm fuse to protect control circuits. It is rated for 6.3 A at 600 V (CSA/UR) and accepts 18–14 AWG conductors, making it suitable for low-voltage control wiring in panels. The compact block—part of the Siemens 8WA1 fuse-terminal family—measures about 42 mm high by 57 mm long with a 10 mm mounting width and is designed for C‑Rail/DIN‑Rail installation.
