FERRAZ SHAWMUT PC31UD69V400A B300013C

Mersen (Ferraz Shawmut) PC31UD69V400A Protistor High-Speed Fuse Description The Mersen PC31UD69V400A is a high-performance semiconductor protection fuse from the renowned Protistor series. This square body fuse is designed to provide extremely fast-acting protection against short-circuits for power semiconductors in demanding industrial applications. Its robust construction ensures reliability and safety in critical systems like frequency converters, soft starters, and power rectifiers. Specifications Manufacturer: Mersen (Ferraz Shawmut) Part Number: PC31UD69V400A Reference Number: B300013C Voltage Rating: 690V AC Current Rating: 400A Fuse Class: aR Interrupting Rating (IR): 200kA at 690V AC Body Size: 31 Mounting: Blade Style Label Info Standard: IEC 60269-4 UL Recognized Application This fuse is ideal for protecting power electronics such as diodes, thyristors, GTOs, and IGBTs in various applications, including variable speed drives, power supplies, and inverters. Country of Origin Made in France. CO2 Impact By purchasing this reused component, you contribute to a circular economy and help avoid the CO2 emissions associated with new production, which we estimate at 16.0 kg. This is comparable to the emissions of a car driving 80 kilometers. Availability This item is in stock and ready for immediate dispatch. Order now from profideals for expert support and fast delivery. FAQ What does the ‘aR’ class rating signify for this fuse?The ‘aR’ class rating indicates it is a partial-range, very high-speed fuse specifically designed for short-circuit protection of semiconductors like diodes, thyristors, and IGBTs. It is not intended for overload protection, which should be handled by another device in the circuit. Can this PC31UD69V400A fuse be used in a DC circuit?While primarily rated for 690V AC, many high-speed fuses can be used in DC applications, but typically at a de-rated voltage. You must consult the official Mersen datasheet for this specific model to verify its DC voltage rating and time-constant (L/R) limitations before using it in any DC circuit. What are the proper mounting torque specifications for the terminals?Proper mounting torque is critical to prevent overheating at the terminals. According to the Mersen datasheet for size 31 square body fuses, the recommended tightening torque is typically around 20-25 N-m (Newton-meters). Always confirm with the latest datasheet to ensure safe and reliable operation. profideals is not an authorized distributor, reseller, or representative of the products featured on this website. All product names, trademarks, brands, and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026