Bussmann 170M1418 Eaton Series High Speed Square Body Fuse, 125A Class aR

Bussmann 170M1418 Eaton Series High Speed Square Body Fuse, 125A Class aR

The Bussmann 170M1418 is an Eaton Bussmann series high speed square body fuse engineered for semiconductor protection in demanding power electronics and industrial drive applications. Rated 700V (UL) and 690V (IEC) with a 125A amperage rating and a 200 kAIC interrupt rating, this Class aR fuse uses a blade end x blade end connection style built to the DIN 43 620 standard. Its square body construction with slotted offset bolted tags delivers the fast-clearing, high-speed performance required to safeguard sensitive semiconductor devices from short-circuit and overcurrent conditions.

Key Features

• Amperage Rating: 125A for reliable overcurrent protection in semiconductor circuits.
• Voltage Rating: 700V (UL) / 690V (IEC), AC voltage type, suited for demanding industrial power systems.
• Interrupt Rating: 200 kAIC high-speed interrupting capability for fast fault clearing.
• Fuse Class: Class aR utilization category (accompanied semiconductor protection) per DIN 43 620.
• Connection Style: Blade end x blade end tags for direct mounting to compatible fuse holders.
• Fuse Shape: Square body design with slotted offset bolted tags for secure, low-resistance connections.
• Clearing Characteristics: Clearing I2t of 8500 at 660V and pre-arc I2t of 1200 for precise coordination with semiconductor protection schemes.
• Watt Losses: 28W rated power dissipation.

Certifications & Compliance

• UL Recognized
• CE Marked

Technical Specifications

• Amperage Rating: 125 A
• Application: semiconductor protection
• Certifications: UL Recognized
• Clearing I2t: 8500 at 660 V
• Compliances: CE Marked
• Fuse Shape: Square body, slotted offset bolted tags
• Insulated Metal Gripping Lugs (Imgl): No
• Packaging Type: Standard
• Pre Arc I2t: 1200
• Product Height: 53 mm
• Product Length Depth: 100 mm
• Product Weight: 136 g
• Product Width: 21 mm
• Utilization Category: aR (accompanied semiconductor protection)
• Voltage Rating: 690 V
• Voltage Type: AC
• Watt Losses: 28 W

Typical Applications

• Semiconductor Device Protection
• Power Electronics and Drive Systems
• Industrial Motor Control Protection
• High-Speed Fault Clearing Circuits
• Accompanied Semiconductor (aR) Protection Schemes

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M1418 reflects that standard with UL Recognized and CE Marked compliance backing its 200 kAIC interrupt rating and Class aR semiconductor protection design. The square body construction, DIN 43 620 blade end x blade end configuration, and precisely specified clearing I2t and pre-arc I2t characteristics make this fuse a dependable choice for engineers who need code-compliant, high-speed overcurrent protection in critical power electronics applications.