Rittal SV 9344.150 NH Fuse-Switch Disconnector - IEC 60947-3

Electromechanical fuse monitoring is built into the SV 9344.150, enabling real-time fault detection and automatic disconnection when a fuse blows. This reduces unplanned downtime and accelerates fault analysis on the shop floor. Use it in panel assemblies where fuse status visibility matters, such as automation cabinets and power distribution boards in manufacturing lines. The three-pole design supports 690 V systems and 250 A capacity, delivering strong short-circuit protection while maintaining safe isolation across all poles. This enhances system reliability in high-demand control networks and simplifies coordination with upstream protection devices. Mounting plate compatibility and precise dimensions (NH size 1, width 184 mm, height 298 mm) enable clean integration into standardized enclosures, reducing layout rework during panel upgrades. Top/bottom cable outlets and M10 screw connections streamline wiring, improving installation efficiency and reducing assembly time. Durable polyamide housing with UL 94 fire-rating adds a safety buffer against enclosure hazards, supporting compliant installations in safety-critical environments. The clamping area for laminated copper bars (32 mm x 10 mm) facilitates robust current paths and minimizes contact resistance, which translates into lower thermal rise and longer component life. Overall, the SV 9344.150 balances ruggedness with practical wiring options, delivering predictable performance and lowering total cost of ownership in power management and distribution applications.