Mersen D100QS175-4 D100QS Series High-Speed DC Fuse, 1000VDC, 175A aR 100kA IR, Round Body 4.38in - Pack of 5

Overview: The Mersen D100QS175-4 is a North American round-body high-speed semiconductor fuse in the D100QS Series, rated 175 A at 1000 VDC for DC systems with L/R ≤1 ms. This item is sold as a pack of 5 units. It provides low I²t let-through, low watts loss, and a high interrupting rating to protect DC power conversion and battery-related equipment.

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 (UL File E60314); REACH/RoHS compliant

Technical Specifications:

• Electrical ratings: 175 A, 1000 VDC, L/R ≤1 ms, 100 kA IR
• Minimum Breaking Capacity (MBC): 1320 A at 1000 VDC; maximum time to clear MBC: 80 ms
• Power dissipation: 19 W at 0.8×In; 35 W at In
• Dimensions (D100QS125–200 frame): A=4.38 in (111 mm), B=1.22 in (31 mm), C=2.88 in (73 mm), D=3.69 in (93.6 mm), E=3.56 in (90.5 mm), F=0.31 in (7.9 mm), G=1.00 in (25.4 mm), H=0.19 in (4.8 mm)
• Weight: 0.19 kg per fuse
• Notes: Catalog numbers ending “-4Y” are for metric screws; series MBC <3 kA
• Accessories/mounting: compatible with 1SC/1MSC modular fuse blocks up to 200 A (e.g., 1SCM8, 1SC250)

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