Bussmann 170M-414 High-Speed Square Body Semiconductor Fuse, Class aR, 500A

Bussmann 170M-414 High-Speed Square Body Semiconductor Fuse, Class aR, 500A

The Bussmann 170M-414 High-Speed Square Body Semiconductor Fuse is an Eaton Bussmann series fuse engineered for demanding power electronics protection. Rated 500A with voltage ratings spanning 1250V (IEC) to 1300V (UL), it carries a 100 kAIC interrupt rating for dependable short-circuit protection. Built to the DIN 43620 square body standard with slotted center bolted tags, this Class aR fuse provides accompanied semiconductor protection along with a top fuse status indicator for fast visual condition checks. It is IEC Rated and CE Marked, making it well suited for DC drives, power converters, and other industrial power electronics applications.

Key Features

• Amperage Rating: 500A, suited for DC common bus, DC drives, power converters/rectifiers, and reduced voltage starter applications.
• Voltage Rating Range: 1250V (IEC) to 1300V (UL) for flexible use across both IEC and UL-rated equipment.
• Interrupt Rating: 100 kAIC for dependable protection against high fault currents.
• Fuse Shape: Square body construction with slotted center bolted tags, built to the DIN 43620 standard.
• Top Fuse Status Indicator: Provides a quick visual check of fuse condition without disconnecting the circuit.
• Utilization Category: Class aR, delivering accompanied semiconductor protection.
• Watt Losses: 85W rated power loss under normal operating conditions.
• Current-Limiting Data: Clearing I²t of 340,000 A²s at 1000V (435,000 A²s at 1250V) and pre-arc I²t of 69,500 A²s for coordinated selective protection.

Certifications & Compliance

• IEC Rated
• CE Marked

Technical Specifications

• Pre Arc I2t: 69500
• Utilization Category: aR (accompanied semiconductor protection)
• Fuse Shape: Square body, slotted center bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Clearing I2t: 340000 at 1000 V, 435000 at 1250 V
• Voltage Type: AC
• Watt Losses: 85 W

Typical Applications

• DC Common Bus Systems
• DC Drives and Motor Control
• Power Converters and Rectifiers
• Reduced Voltage Starters
• Industrial Power Electronics Protection Circuits

Why Bussmann?

Bussmann by Eaton is a trusted name in circuit protection, and this high-speed square body fuse reflects that reputation with DIN 43620 square body construction, voltage ratings spanning 1250V to 1300V, and a 100 kAIC interrupt rating built for demanding power electronics. The Class aR utilization category paired with a top fuse status indicator gives engineers accompanied semiconductor protection and fast visual fuse-condition confirmation for reliable, code-compliant installations in DC drives, power converters, and other industrial power electronics systems.