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Bussmann 170M5243 Eaton Series Class aR High-Speed Square Body Fuse, 450A, 700V
The Bussmann 170M5243 is an Eaton series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 700V (UL) / 690V (IEC) with a 450A amperage rating and a 100 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 with a square body and slotted center bolted tags. As an accompanied semiconductor protection device (Utilization Category aR), it delivers fast, reliable clearing for high fault-current conditions.
Key Features
- Amperage Rating: 450A for high-current circuit protection.
- Voltage Rating: 700V (UL), 690V (IEC), with a 1250V AC voltage rating for demanding power circuits.
- Interrupt Rating: 100 kAIC for reliable clearing of high fault currents.
- Utilization Category: Class aR (accompanied semiconductor protection) for use alongside semiconductor devices.
- Fuse Shape: Square body with slotted, center bolted tags per DIN 43 620.
- Clearing I2t: 205000 at 1000V, 270000 at 1250V for predictable let-through energy.
- Pre-Arc I2t: 34000 for coordinated protection design.
- Watt Losses: 90W.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 450 A
- Application: semiconductor protection
- Certifications: IEC Rated
- Clearing I2t: 205000 at 1000 V, 270000 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: 34000
- 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: 90 W
Typical Applications
- Semiconductor Protection
- Power Electronics and Drive Circuits
- Industrial Motor Control Systems
- High Fault-Current Applications Requiring Fast Clearing
Why Bussmann?
Bussmann by Eaton engineers this Class aR fuse to DIN 43 620 with IEC-rated, CE-marked construction for dependable semiconductor protection. Its 100 kAIC interrupt rating and defined clearing I2t and pre-arc I2t characteristics give engineers the data needed to coordinate protection schemes for demanding power electronics installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 450 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 205000 at 1000 V, 270000 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:
- 34000
- 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:
- 90 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse
Bussmann 170M5243 – Frequently Asked Questions
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Does the Bussmann 170M5243 come with a warranty?
Absolutely. The Bussmann 170M5243 is backed by a manufacturer’s warranty.
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