Mersen D100QS80-4 D100QS Series High-Speed DC Fuse, 1000VDC, 80A aR 100kA IR, Round Body - Pack of 5

Overview: Mersen D100QS80-4 is a North American style round-body high-speed semiconductor fuse from the D100QS Series. It is rated 80 A at 1000 VDC and designed for DC applications with L/R ≤1 ms. This item is sold as a pack of 5 units. The fuse provides very low I²t, low watts loss, and a high interrupting rating to protect DC systems such as battery charging systems, ESS, inverters, and DC switching components.

Key Features:

• 1000 VDC rating with L/R ≤1 ms time constant
• High interrupting rating: 100 kA IR (DC)
• aR characteristic for semiconductor short-circuit protection
• Lower I²t and low watts losses
• Superior cycling ability; built to withstand vibration
• UL Recognized; REACH/RoHS compliant

Technical Specifications:

• Electrical ratings: 80 A, 1000 VDC, L/R ≤1 ms, 100 kA IR
• Minimum Breaking Capacity (MBC): 1540 A at 1000 VDC; maximum time to clear MBC: 40 ms
• Power dissipation: 9.7 W at 0.8×In; 18 W at In
• Construction: North American round body; for 50–100 A ratings overall length is 4.38 in (111 mm), body width 1.00 in (25.4 mm), mounting hole 0.31 in (7.9 mm), terminal hole 0.75 in (19 mm)
• Weight: 0.12 kg per fuse
• Mounting/accessories: compatible with 1SC/1MSC modular fuse blocks (up to 200 A) and P266 (225–300 A for D100QS); catalog suffix “-4Y” designates metric screws

Applications:

• High-power battery charging and management systems
• Energy Storage Systems (ESS) and Battery Disconnect Units (BDU)
• DC fast-charging stations and DC grids
• Backup protection for DC relays/disconnectors/switches
• Protection of UPS and inverters up to 1000 VDC