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Bussmann 170M5242 Eaton Series High Speed Square Body Fuse, Class aR
The Bussmann 170M5242 is an Eaton Bussmann series high speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 700V (UL) and 690V (IEC) with a 400A amperage rating and 100 kAIC interrupt rating, this Class aR fuse follows the DIN 43 620 form factor for square body, slotted center bolted tag connections. Built for accompanied semiconductor protection, it delivers fast, reliable current-limiting performance in industrial power conversion equipment.
Key Features
- Amperage Rating: 400A for high-current semiconductor protection circuits.
- Voltage Rating: 700V (UL), 690V (IEC) for use in demanding industrial power electronics.
- Interrupt Rating: 100 kAIC for high fault-current withstand capability.
- Fuse Shape: Square body with slotted center bolted tags per DIN 43 620 for secure, repeatable connections.
- Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection schemes.
- Clearing I2t: 140000 at 1000V, 180000 at 1250V for predictable let-through energy.
- Pre-Arc I2t: 23000 for consistent time-current characteristics.
- Watt Losses: 85W rated power dissipation.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 400 A
- Application: semiconductor protection
- Certifications: IEC Rated
- Clearing I2t: 140000 at 1000 V, 180000 at 1250 V
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Pre Arc I2t: 23000
- Product Height: 67 mm
- Product Length Depth: 284 mm
- Product Weight: 1009 g
- Product Width: 175 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 1250 V
- Voltage Type: AC
- Watt Losses: 85 W
Typical Applications
- Semiconductor Protection Circuits
- Power Electronics and Drive Systems
- High-Speed Fusing for Industrial Equipment
- Motor Control and Switchgear Protection
Why Bussmann?
Bussmann by Eaton builds the 170M5242 to the DIN 43 620 square body standard with CE marked, IEC rated construction for dependable performance in coordinated semiconductor protection schemes. Its Class aR utilization category and defined pre-arc and clearing I2t characteristics give engineers predictable protection data for accurate system coordination. For professionals specifying high speed fusing in industrial power electronics, the 170M5242 delivers the rugged, code-compliant construction Bussmann is known for.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 400 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 140000 at 1000 V, 180000 at 1250 V
- Compliances:
- CE Marked
- Fuse Indicator:
- Other
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 100 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 23000
- Product Height:
- 67 mm
- Product Length Depth:
- 284 mm
- Product Weight:
- 1009 g
- Product Width:
- 175 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 1250 V
- Voltage Type:
- AC
- Watt Losses:
- 85 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse