HNX3D120

The HNX3D120 is a Siemens VL series molded case circuit breaker in the NG frame, rated for 1200 amps at 600 volts with 3 poles. Designed for main and feeder protection in industrial plants, commercial buildings, and switchgear, it protects circuits from overloads and short circuits in heavy-duty power distribution. With a high interrupting rating of 65kA@480V, it can safely interrupt the large fault currents found on higher-capacity systems. The HNX3D120 is part of the HNX family of Siemens VL breakers, which use a compact, modular design and carry the major standards and markings, including UL, CSA, NOM, IEC, and CE. It has a non-interchangeable trip unit, which means the trip unit is built into the breaker and cannot be removed, and this construction makes the breaker suitable for reverse-fed applications. Siemens VL breakers are built for dependable, repeatable protection, which is why they are used across a wide range of facilities. Mechanically, the HNX3D120 is a bolt-on breaker in a molded case, and it is sold without lugs, so the correct lugs must be ordered to match the cable size. Because the NG frame is a large, heavy-duty design, it is worth confirming that the breaker fits your switchgear, panelboard, or enclosure before ordering. This makes the HNX3D120 a practical choice for contractors and maintenance teams who need to replace or add a Siemens VL breaker and keep an existing power system running. Purchase the HNX3D120 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted circuit breakers, switchgear components, and electrical products from manufacturers like Siemens, Eaton, Cutler-Hammer, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.