The 3211890 is a two-level, black fuse modular terminal block designed to provide overcurrent protection using 5x20 mm G-type glass or ceramic fuses. It features a tool-free push-in connection method for both levels, with the first level rated for a nominal voltage of 500 V, a nominal current of 28 A, and accepting conductors from 0.2 mm² to 6 mm². The second level is also rated for 500 V but has a nominal current of 6.3 A, while an integrated LED indicator operates within a voltage range of 30 V to 60 V AC/DC to show fuse status. Constructed from PA insulating material with a V0 flammability rating, this terminal block has a compact width of 6.2 mm and an operating temperature range of -60 °C to 105 °C. Its compact, front-connection design makes it suitable for wiring in confined spaces, and it can be mounted on NS 35/7,5 and NS 35/15 DIN rails.