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Bussmann 170M-342 Eaton High-Speed Square Body Semiconductor Fuse, Class aR, 550A, 200kAIC
The Bussmann 170M-342 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications, rated 550A with a 200 kAIC interrupting rating and built to the Class aR (accompanied semiconductor protection) utilization category. This family is available in 690V and 700V voltage ratings, covering both IEC and UL system requirements from a single square body platform. The fuse features flush end contacts and a top-mounted fuse status indicator for fast visual condition checks, and it carries CE marking and an IEC rating for North American and international power electronics installations where fast, coordinated fault clearing is essential.
Key Features
- Voltage & Current Rating: Available in 690V and 700V ratings at 550A for high-capacity semiconductor circuit protection.
- Interrupting Rating: 200 kAIC for dependable fault-current clearing in high-energy systems.
- Fuse Class: Class aR (accompanied semiconductor protection) utilization category for precise coordination with semiconductor devices.
- Construction: Square body design with flush end contacts for compact, space-saving panel mounting.
- Status Indicator: Top-mounted fuse status indicator provides quick visual confirmation of fuse condition.
- Let-Through Energy: Clearing I²t of 230,000 A²s at 660V and Pre-Arc I²t of 34,000 A²s for reliable coordination with upstream and downstream devices.
- Watt Loss: Rated watt loss of 89W for efficient thermal performance.
- Application: Purpose-built for semiconductor protection in power electronics equipment.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 550 A
- Product Width: 90 mm
- Product Height: 45 mm
- Product Length Depth: 155 mm
- Clearing I2t: 230000 at 660 V
- Pre Arc I2t: 34000
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
Typical Applications
- Semiconductor Protection Circuits
- Power Electronics and Drive Systems
- Rectifier and Converter Protection
- Industrial Motor Control Systems
Why Bussmann?
Bussmann by Eaton builds the 170M-342 high-speed fuse to a 200 kAIC interrupting rating with Class aR utilization for accompanied semiconductor protection, available in 690V and 700V ratings and backed by CE marking and an IEC rating for global compliance. The square body, flush-contact design with a top-mounted status indicator delivers dependable, code-compliant performance for professional power electronics and industrial installations.
Manufacturer Resources
Product Specs
- Product Width:
- 90 mm
- Pre Arc I2t:
- 34000
- Compliances:
- CE Marked
- Amperage Rating:
- 550A
- Department:
- Electrical
- Packaging Type:
- Standard
- Utilization Category:
- aR (accompanied semiconductor protection)
- Mounting Method:
- Flush
- Fuse Indicator:
- Top fuse status indicator
- Product Length Depth:
- 155 mm
- Insulated Metal Gripping Lugs Imgl:
- No
- Clearing I2t:
- 230000 at 660 V
- Product Subgroup:
- Other Fuses
- Product Group:
- Fuses
- Product Height:
- 45 mm
- Product Details:
- Fuse
- Product Type:
- Fuse
- Certifications:
- IEC Rated
- Class:
- Class aR
- Voltage Rating:
- 690V - 700V
- Grade:
- Class aR
- Listing:
- CE Marked
- Standards:
- IEC