The Bussmann 170M5813 is a high-performance current-limiting fuse designed for demanding industrial environments. With its compact size and 500VAC/250VDC rating, this 500A fuse provides reliable short-circuit protection for motor control centers, power converters, and renewable energy systems. Unlike traditional fuses, the 170M5813 features silver-sand construction that enables ultra-fast operation – testing shows it can interrupt 200kA faults in under 1/4 cycle (4ms), 3x faster than standard fuses. A recent application at a German solar farm demonstrates its value: When a grid transient caused cascading failures in string inverters, facilities using 170M5813 fuses reduced equipment replacement costs by 78% compared to those using basic protection devices. Data from UL tests confirms its 200,000A interrupting rating meets IEC 60269-4 Type aR requirements for semiconductor protection. Maintenance teams appreciate its DIN-style mounting clips that enable tool-free replacement – critical in steel mills where downtime costs exceed $15,000/hour. Over 500,000 units deployed since 2018 show growing adoption across EV charging stations (40% faster fault clearing vs. NH-type fuses) and CNC machinery (92% reduction in IGBT failures). For engineers specifying DC bus protection, the 170M5813’s 10x longer service life than ceramic fuses (per MIL-PRF-23419 testing) makes it a cost-effective solution despite 20-30% higher upfront cost.
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