Новые трехконтактные предохранители STTP 9550 от Schurter обеспечивают активную защиту литий-ионных батарей

The new three-terminal fuses STTP 9550 from SCHURTER combine conventional overcurrent protection with an actively triggered overcharge protection function, providing an additional layer of safety for lithium-ion battery systems. As well as current-dependent interruption, the integrated trigger terminal facilitates controlled activation in critical operating conditions. This enables reliable disconnection of charge and discharge paths even in the event of protection IC or FET failure. Gold-plated terminals ensure low and stable contact resistance, high signal integrity, and excellent corrosion resistance. The compact package supports high-power-density battery pack designs ranging from one to 24 cells. Typical applications include energy storage systems, power tools, UPS equipment, e-bikes, e-scooters, and AGVs. Supported by UL approvals and designed for redundant protection architectures required by modern battery safety standards, three-terminal fuses deliver a robust and intelligent protection solution for advanced energy systems. A three-terminal fuse combines traditional overcurrent protection with an independently controlled trigger terminal. In addition to interrupting excessive current automatically, the trigger terminal enables an external battery management system (BMS) to actively disconnect the circuit during overcharge or other critical fault conditions, providing an extra layer of protection. Lithium-ion batteries require multiple levels of protection to prevent overcharging, overheating, and excessive current that could damage cells or create safety risks. A three-terminal fuse provides redundant protection by allowing the battery management system to trigger the fuse even if other protection components, such as MOSFETs or protection ICs, fail. The STTP 9550 is suitable for lithium-ion battery packs used in energy storage systems, power tools, UPS equipment, e-bikes, e-scooters, automated guided vehicles (AGVs), and other battery-powered industrial and consumer products requiring enhanced safety and reliability. An actively triggered fuse enables controlled circuit disconnection before hazardous conditions escalate. This improves battery safety, supports compliance with modern battery protection standards, and helps reduce the risk of battery damage caused by overcharging, internal faults, or failures within the battery management system. Gold-plated terminals provide low and stable contact resistance, high signal integrity, and excellent resistance to corrosion. These characteristics help maintain reliable electrical performance throughout the product's operating life, particularly in demanding automotive and industrial environments. The STTP 9550 is designed for compact battery packs ranging from a single lithium-ion cell up to 24-cell configurations. Its compact footprint makes it suitable for high-power-density battery designs where both space efficiency and robust protection are critical. Intelligent fuses complement battery management systems by providing an independent hardware-based safety mechanism. If the BMS detects an unsafe operating condition, it can actively trigger the fuse to disconnect the battery, helping prevent catastrophic failures and increasing overall system reliability. Battery safety standards increasingly require redundant protection to ensure that a single component failure does not compromise the entire system. By combining conventional overcurrent protection with active triggering, three-terminal fuses help manufacturers design safer lithium-ion battery packs for energy storage, mobility, and industrial applications.