Mersen D100QS50-4 Amp-Trap High-Speed Fuse, 50A 1000VDC, aR Utilization, North American Round Body - Pack of 5

Mersen Amp-Trap® D100QS Series High-Speed DC Protection Fuse | 50A 1000VDC

The Mersen D100QS50-4 is a high-performance, ultra-fast acting fuse specifically engineered for the protection of modern Direct Current (DC) systems. As part of Mersen’s next-generation evolution in power electronics protection, this North American style round-body fuse is rated for 50A at 1000VDC. It is an ideal safety solution for high-power conversion applications, including Electric Vehicle (EV) fast-charging stations, Energy Storage Systems (ESS), and industrial battery management units.

This "aR" utilization category fuse is optimized to minimize thermal energy let-through (I²t) and peak let-through current, effectively shielding sensitive semiconductor components and DC busbars from the catastrophic effects of short-circuit faults. The D100QS series offers superior cycling ability compared to standard general-purpose fuses, ensuring reliable operation under high cyclic loading conditions. The "-4" designation indicates a standard bolt-on configuration, while the "-4Y" variant is specifically designated for metric screw mounting.

Key Features:

• Optimized DC Performance: Specifically designed for DC systems up to 1000VDC with extremely fast clearing times.
• Superior Cycling Ability: Built to provide a long, reliable service life even in environments with frequent load cycling.
• High Breaking Capacity: Features an interrupting rating of 100kA, ensuring maximum safety and arc quenching during high-energy faults.
• Low Power Dissipation: Designed with low watts loss to maximize energy efficiency and minimize heat generation within enclosures.
• Robust Construction: Engineered to withstand vibration and environmental stress, meeting industrial standards for heavy-duty applications.
• Industry Compliance: UL Recognized Component and REACH/RoHS compliant.

Technical Specifications:

• Manufacturer: Mersen
• Series: Amp-Trap® D100QS
• Catalog Number: D100QS50-4 / D100QS50-4Y
• Rated Current (In): 50 A
• Rated Voltage: 1000 VDC
• Utilization Category: aR
• Breaking Capacity (IR): 100 kA @ 1000VDC (L/R ≤ 1ms)
• Minimum Breaking Capacity (MBC): < 3 kA
• Mounting: Round Body with Center Bolting
• Quantity: 5 pieces per pack