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Bussmann 170M3243 High Speed Square Body Fuse, 160A Class aR
The Bussmann 170M3243 is an Eaton Bussmann series high speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) / 690V (IEC) with a 160A amperage rating and a 100 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 dimensional standards with a square body featuring slotted, center-bolted tags for secure, reliable connections. IEC rated and CE marked, it is classified under Utilization Category aR for accompanied semiconductor protection in industrial power electronics.
Key Features
- Amperage Rating: 160A for high-current semiconductor circuit protection.
- Dual Voltage Rating: 700V (UL) and 690V (IEC) for compatibility across UL and IEC-rated equipment.
- Interrupt Rating: 100 kAIC for high fault-current interrupting capability.
- Fuse Class: Class aR, Utilization Category aR (accompanied semiconductor protection).
- Square Body Construction: Slotted, center-bolted tags built to DIN 43 620 for a secure mechanical connection.
- Clearing I2t: 16000 at 1000V and 21000 at 1250V, with a Pre-Arc I2t of 2600.
- Watt Losses: Rated at 40W for predictable thermal performance.
- Compact Footprint: 305 mm length/depth x 145 mm width x 65 mm height, weighing 348 g.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 160 A
- Application: Semiconductor protection
- Certifications: IEC Rated
- Clearing I2t: 16000 at 1000 V, 21000 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: 2600
- Product Height: 65 mm
- Product Length/Depth: 305 mm
- Product Weight: 348 g
- Product Width: 145 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 1250 V
- Voltage Type: AC
- Watt Losses: 40 W
Typical Applications
- Semiconductor Protection Circuits
- Power Electronics and Motor Drives
- Industrial High-Speed Fusing Applications
- UL and IEC-Rated Electrical Systems
Why Bussmann?
Bussmann by Eaton is a trusted name in circuit protection, and the 170M3243 reflects that standard with its Class aR high speed square body design, dual UL/IEC voltage ratings, and 100 kAIC interrupt capability. Built to DIN 43 620 dimensional standards, IEC rated, and CE marked, this fuse delivers dependable, code-compliant performance for semiconductor protection in demanding industrial power electronics applications.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 160 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 16000 at 1000 V, 21000 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:
- 2600
- Product Height:
- 65 mm
- Product Length Depth:
- 305 mm
- Product Weight:
- 348 g
- Product Width:
- 145 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 1250 V
- Voltage Type:
- AC
- Watt Losses:
- 40 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse