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Bussmann 170M6644 High Speed Fuse, 630A Class aR, 100 kAIC
The Bussmann 170M6644 High Speed Fuse is a Class aR fuse rated 630A RMS, built with a square body construction for demanding semiconductor and power electronics protection. This fuse carries a 100 kAIC interrupt rating and a voltage rating of 1300 Vac (UL) / 1100 Vac (IEC), making it suitable for DC common bus, DC drives, power converters/rectifiers, and reduced voltage starters. It is UL Recognized and IEC Rated, delivering dependable overcurrent protection for professional industrial power systems.
Key Features
- Amperage Rating: 630A RMS for high-capacity circuit protection.
- Fuse Class: Class aR high speed fuse designed for semiconductor and power electronics protection.
- Interrupt Rating: 100 kAIC for reliable performance under high fault-current conditions.
- Voltage Rating: 1300 Vac (UL), 1100 Vac (IEC) for use across UL and IEC-rated systems.
- Fuse Indicator: Non Indicating design.
- Clearing I2t: 495,000 at 1000V and 665,000 at 1250V for predictable let-through energy.
- Pre-Arc I2t: 83,500 for coordinated protection with upstream and downstream devices.
- Watt Losses: 115W.
- Mounting: Flush-mount square body configuration.
Certifications & Compliance
- UL Recognized
- IEC Rated
- RoHS Compliant
- CE Marked
Technical Specifications
- Amperage Rating: 630A
- Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
- Class: Class aR
- Clearing I2t: Clearing at 1000V: 495000, Clearing at 1250V: 665000
- Current Rating: 630A RMS
- Fuse Indicator: Non Indicating
- Interrupt Rating: 100 kAIC
- Packaging Type: Standard
- Pre Arc I2t: 83500
- Voltage Rating: 1300 Vac (UL), 1100 Vac (IEC)
- Watt Losses: 115W
- Product Type: Square body, -GKN/90 type K indicator for micro
- Product Length: 5.433 IN
- Product Details: Square body, -GKN/90 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
- Power Converters and Rectifiers
- Reduced Voltage Starters
- Industrial Power Electronics Protection
Why Bussmann?
Bussmann fuses are engineered to deliver dependable overcurrent protection backed by UL Recognition and IEC ratings, with documented clearing and pre-arc I2t data supporting precise system coordination with upstream and downstream devices. The 170M6644's Class aR design, 100 kAIC interrupt rating, and RoHS/CE compliance make it a trusted choice for semiconductor and power conversion protection in professional electrical installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 630A
- Class:
- Class aR
- Clearing I2t:
- Clearing at 1000V: 495000 , Clearing at 1250V: 665000
- Current Rating:
- 630A RMS
- Fuse Indicator:
- Non Indicating
- Interrupt Rating:
- 100 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 83500
- Voltage Rating:
- 1300 Vac (UL), 1100 Vac (IEC)
- Watt Losses:
- 115W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Length:
- 5.433 IN
- Product Details:
- Square body, -GKN/90 type K indicator for micro
- Mounting Method:
- Flush
- Product Height:
- 2.087 IN
- Product Weight:
- 1.6456 LB
- Product Width:
- .315 IN