Bussmann 170M4712 High-Speed Fuse-Link, 400A, 690V AC, Class aR

Bussmann 170M4712 High-Speed Fuse-Link, 400A, 690V AC, Class aR

The Bussmann 170M4712 is a high-speed fuse-link purpose-built for semiconductor protection in demanding AC power circuits. Rated 400A at 690V AC, this Size 1 fuse-link carries a Class aR (accompanied semiconductor protection) utilization category and measures 53 x 69 x 136 mm with 115 mm center-to-center tag spacing for standard mounting compatibility. Recognized to IEC standards and listed to UL, it delivers a 200 kAIC interrupt rating, giving power electronics designers and panel builders a fast-acting, high-capacity fuse-link for protecting sensitive semiconductor devices from short-circuit and overcurrent conditions.

Key Features

• Trade Size & Dimensions: Size 1 fuse-link measuring 53 x 69 x 136 mm with 115 mm centers, matching standard high-speed fuse mounting hardware.
• Fuse Body Construction: Square body design with center-bolted tags for a secure, low-resistance mechanical and electrical connection.
• High-Speed Class aR: Accompanied semiconductor protection utilization category engineered for the fast clearing times semiconductor devices require.
• Electrical Rating: 400A at 690V AC for high-capacity protection of AC power circuits and converter equipment.
• Interrupt Rating: 200 kAIC interrupt rating for dependable performance and safe clearing under high fault-current conditions.
• Fuse Indicator: No indicator, suited to standard installations that do not require visual blown-fuse signaling.
• Standard Packaging: Supplied in standard packaging for straightforward stocking and replacement.

Certifications & Compliance

• IEC Recognized
• UL Listed
• CE Compliant

Technical Specifications

• Application: Semiconductor protection
• Certifications: IEC
• Class: Class aR
• Compliances: CE
• Fuse Indicator: None
• Fuse Shape: Square body, center bolted tags
• Interrupt Rating: 200 kAIC
• Packaging Type: Standard
• Product Height: 54 mm
• Product Length Depth: 58 mm
• Product Weight: 515 g
• Product Width: 170 mm
• Utilization Category: aR (accompanied semiconductor protection)

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Converter Circuits
• Industrial Motor Drive Protection
• High-Speed Interruption in AC Power Distribution Systems
• Rectifier and Inverter Circuit Protection

Why Bussmann?

Bussmann builds its high-speed fuse-links with rugged square-body construction and center-bolted tags for dependable, low-resistance connections in demanding semiconductor protection duty. With IEC recognition, UL listing, and a 200 kAIC interrupt rating, this Class aR 170M4712 fuse-link delivers the fast-acting, code-compliant performance professional electrical and industrial power teams rely on for critical AC circuit protection.