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Bussmann 170M8504 High Speed Fuse, 500A Class aR
The Bussmann 170M8504 High Speed Fuse is a Class aR fuse rated 500A RMS, engineered to deliver fast, reliable overcurrent protection for demanding DC power applications. Featuring a square body flush end contact design and a 150 kAIC interrupt rating, this fuse is built for use in DC common bus systems, DC drives, power converters/rectifiers, and reduced voltage starters. It is UL Recognized and IEC Rated, giving electrical professionals the documented compliance needed for critical power electronics protection.
Key Features
- Amperage Rating: 500A RMS current rating delivers dependable high-speed protection for demanding DC power circuits.
- Fuse Class: Class aR high speed fuse construction suited to semiconductor and power electronics protection.
- Interrupt Rating: 150 kAIC interrupt rating provides robust short-circuit interrupting capacity.
- Design: Square body flush end contact construction with a Flush mounting method and Non Indicating fuse indicator.
- Application Coverage: Engineered for DC common bus, DC drives, power converters/rectifiers, and reduced voltage starter systems.
- Compact Dimensions: Measures 5.433 IN in length, 2.087 IN in height, and .315 IN in width for space-constrained panel layouts.
- Coordination Data: Rated at 110W watt losses with a Pre-Arc I²t of 37500 and a Clearing I²t of 225000 at 1000V for precise circuit protection coordination.
Certifications & Compliance
- UL Recognized
- IEC Rated
- RoHS Compliant
- CE Marked
Technical Specifications
- Amperage Rating: 500A
- Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
- Class: Class aR
- Clearing I²t: Clearing at 1000V: 225000
- Current Rating: 500A RMS
- Fuse Indicator: Non Indicating
- Interrupt Rating: 150 kAIC
- Packaging Type: Standard
- Pre Arc I²t: 37500
- Watt Losses: 110W
- Product Type: Square body flush end contact, -GKN/- type K indicator for micro
- Product Length: 5.433 IN
- Product Details: Square body flush end contact, -GKN/- type K indicator for micro
- Mounting Method: Flush
- Product Height: 2.087 IN
- Product Weight: 1.6456 LB
- Product Width: .315 IN
Typical Applications
- DC Common Bus Systems
- DC Drives and Motor Controls
- Power Converters and Rectifiers
- Reduced Voltage Starter Systems
- Power Electronics and Semiconductor Protection
Why Bussmann?
Bussmann engineers the 170M8504 High Speed Fuse with Class aR construction, a 150 kAIC interrupt rating, and UL Recognized, IEC Rated compliance to deliver dependable, code-aligned protection for critical DC power electronics. The square body flush end contact design and documented I²t coordination data make it a trusted choice for professionals specifying high-speed fuse protection in demanding industrial systems.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 500A
- Class:
- Class aR
- Clearing I2t:
- Clearing at 1000V: 225000
- Current Rating:
- 500A RMS
- Fuse Indicator:
- Non Indicating
- Interrupt Rating:
- 150 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 37500
- Watt Losses:
- 110W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Length:
- 5.433 IN
- Mounting Method:
- Flush
- Product Height:
- 2.087 IN
- Product Weight:
- 1.6456 LB
- Product Width:
- .315 IN