Siemens 3NE1331-2 Fuse

Siemens 3NE1331-2 is a SITOR fuse link in NH2 format with blade contacts and a front-indicator window, rated for 350 A. This High Rupturing Capacity (HRC) fuse element is designed for semiconductor protection in power-electronics circuits and is specified for Un AC up to 690 V and Un DC up to 250 V, making it suitable for protection tasks in drive systems and power conversion equipment that use power semiconductors. The SZ 2 size and NH2 blade-contact arrangement indicate its mounting footprint and connection method within compatible Siemens SITOR protection assemblies, ensuring a secure electrical interface and straightforward replacement in panels or switchgear. With a designation of gR for semiconductor fault protection, 3NE1331-2 provides visible status indication through its front indicator, helping technicians quickly assess fuse health in fault conditions. Cataloged across Siemens’ Industry Mall (Australia) and widely listed by major distributors (for example Farnell, Kirby Risk, RS Components), this fuse link is purpose-built to safeguard IGBTs, diodes, and other power devices in high-voltage drives and energy‑intensive applications, while preserving the ability to disconnect swiftly under overload.