Bussmann 170M-201 High-Speed DC Fuse-Link, Size 3, gR IEC, 750V

Bussmann 170M-201 High-Speed DC Fuse-Link, Size 3, gR IEC, 750V

The Bussmann 170M-201 is a high-speed DC fuse-link engineered for demanding semiconductor and power electronics protection applications. Built in physical size 3 with overall dimensions of 75 x 88 x 131 mm, this gR-class fuse-link is IEC compliant and includes a single indicator for quick visual confirmation of fuse status after operation. Rated for 750V DC, this fuse-link family is available in 630A and 700A amp ratings, giving specifiers a choice of current ratings to match a range of DC circuit protection requirements without changing the overall body size or mounting footprint. Its high-speed, full-range design makes it well suited to protecting sensitive power semiconductor devices from short-circuit and overcurrent fault conditions.

Key Features

• Amp Rating Range: Available in 630A and 700A ratings within this size 3 family, allowing the same physical fuse-link footprint to cover a range of DC current protection needs.
• Voltage Rating: Rated 750V DC, suitable for high-voltage direct current distribution and power conversion circuits.
• Physical Size 3: Overall dimensions of 75 x 88 x 131 mm for standard size 3 mounting, clearance, and busbar connection compatibility.
• High-Speed Operation: Fast-acting fuse-link design engineered to clear fault currents quickly and protect sensitive semiconductor components from damaging let-through energy.
• gR Fuse Class: IEC gR designation provides full-range breaking capacity, purpose-built for semiconductor and power conversion protection duty.
• Single Indicator: Built-in single indicator provides a clear visual signal when the fuse-link has operated, simplifying inspection and troubleshooting in the field.
• IEC Compliant: Designed and constructed to IEC standards for consistent, internationally recognized performance and interchangeability.

Technical Specifications

• Product Width: 98 mm
• Product Height: 78 mm

Typical Applications

• DC Power Distribution and Protection Systems
• Semiconductor and Power Electronics Protection
• Rectifier and Converter Circuits
• Industrial DC Drive Systems
• Power Conversion Equipment Requiring High-Speed Fault Clearing

Why Bussmann?

Bussmann fuse-links are engineered for dependable, code-compliant performance in demanding DC power protection applications where equipment downtime is not an option. With IEC-compliant gR construction, a high-speed response designed to protect sensitive semiconductor components, and a built-in single indicator for fast fault confirmation, the 170M-201 fuse-link family delivers the reliable, consistent protection that professional electrical and industrial installations require. Choosing a size 3, 750V DC rated fuse-link available across 630A and 700A ratings gives engineers and maintenance teams a proven, standardized option for critical DC circuit protection.