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Bussmann Series High speed fuses
Bussmann Series High Speed Fuses are semiconductor protection fuses designed for the rigorous demands of power electronics and industrial drive systems. These fuses, often referred to as ultra-rapid fuses or rectifier fuses, are engineered to provide extremely fast interruption of overcurrents, safeguarding sensitive components like IGBTs, thyri...
Bussmann Series High Speed Fuses are semiconductor protection fuses designed for the rigorous demands of power electronics and industrial drive systems. These fuses, often referred to as ultra-rapid fuses or rectifier fuses, are engineered to provide extremely fast interruption of overcurrents, safeguarding sensitive components like IGBTs, thyristors, and diodes. Key technical parameters include rated currents from a few amps up to several thousand amps, voltage ratings typically from 250V to 2000V AC/DC, and high breaking capacities exceeding 200kA. They feature a compact, blade or cylindrical body design with silver or copper elements embedded in sand, ensuring low I²t values and minimal arc voltage. The Bussmann series includes specific ranges like the 170M, FWP, and FWH families, each tailored for different mounting styles (bolted, DIN rail) and application voltages.
These high-speed fuses are critical in sectors such as variable frequency drives (VFDs), uninterruptible power supplies (UPS), electric vehicle charging infrastructure, traction systems for railways, and industrial welding equipment. They are installed in DC link circuits, inverter input stages, and battery protection circuits where conventional circuit breakers cannot react quickly enough. Their ability to clear faults in under a millisecond makes them indispensable in high-power rectifier banks and regenerative braking systems.
Within the Bussmann High Speed Fuse category, key subcategories include the 170M series (for general semiconductor protection up to 690V), the FWP series (for 700V AC/DC applications), and the FWH series (for 500V AC/DC systems). Article codes typically follow a pattern like 170Mxxxx, where 'xxxx' denotes the specific current rating and voltage class. For example, the 170M3819 is a common 100A, 690V fuse. Other notable codes include FWP-50A14F and FWH-100B, each with distinct dimensions and terminal configurations.
Partnering with Electric Automation Network ensures access to genuine Bussmann fuses with real-time pricing and global express shipping. Our team of electrical engineers provides personalized technical support to help you select the correct fuse based on your system's I²t, voltage, and breaking capacity requirements. We offer detailed datasheets and cross-reference assistance, ensuring your critical power electronics are protected with the highest reliability.
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