Bussmann 170M7250 Class aR Semiconductor Fuse, 1400A 1250V AC

Bussmann 170M7250 Class aR Semiconductor Fuse, 1400A 1250V AC

The Bussmann 170M7250 is a Class aR semiconductor fuse rated 1400A at 1250V AC, engineered to deliver accompanied overcurrent protection (Utilization Category aR) for power semiconductor devices in demanding industrial equipment. This 4BKN/105 style fuse is purpose-built for semiconductor protection applications, safeguarding SCRs, diodes, and other power electronic components with fast, reliable clearing. Voltage type is AC, matching the demands of high-power conversion and drive systems used throughout industrial facilities.

Key Features

• High Amperage Rating: Rated 1400A for handling substantial current loads in demanding industrial power circuits.
• High Voltage Rating: Rated 1250V AC, supporting use in high-voltage power conversion and industrial drive equipment.
• Class aR Design: Utilization Category aR (accompanied semiconductor protection) provides coordinated overcurrent protection for power semiconductor devices such as SCRs and diodes.
• Semiconductor Protection: Purpose-built for semiconductor protection applications, safeguarding sensitive power electronic components from damaging fault currents.
• AC Voltage Type: Designed for AC power systems commonly found in industrial drives, rectifiers, and conversion equipment.
• Fuse Indicator: Equipped with a fuse indicator (Other type) to aid status visibility during maintenance.
• Standard Packaging: Supplied in standard packaging configuration for straightforward stocking and handling.
• Terminal Style: Standard terminal construction, not equipped with insulated metal gripping lugs (IMGL).

Technical Specifications

• Amperage Rating: 1500 A
• Application: semiconductor protection
• Class: Class aR
• Compliances: Contact factory
• Fuse Indicator: Other
• Insulated Metal Gripping Lugs (IMGL): No
• Packaging Type: Standard
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 1500 V
• Voltage Type: AC

Typical Applications

• Semiconductor Device Protection (SCRs, Diodes, Thyristors)
• Power Conversion and Rectifier Equipment
• Industrial Motor Drive Systems
• Class aR Accompanied Fuse Protection Schemes
• High-Power Industrial Electrical Assemblies

Why Bussmann?

Bussmann is a recognized name in circuit protection, and the 170M7250 reflects that engineering discipline with a Class aR utilization category built specifically for accompanied semiconductor protection. For professionals specifying overcurrent protection on power conversion and industrial drive systems, this fuse offers rated performance of 1400A and 1250V AC aligned to demanding applications. Choose Bussmann for dependable, application-specific fuse protection backed by established fuse engineering.