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Bussmann 170M5690 High Speed Fuse, Class aR, 315A
The Bussmann 170M5690 is a Class aR high speed fuse rated 315A RMS at 690 Vac (IEC), purpose-built to protect DC common bus systems, DC drives, power converters/rectifiers, and reduced voltage starters from short-circuit and overcurrent damage. With a 100 kAIC interrupt rating and a non-indicating square body US style construction (-FU/115 without indicator), this fuse delivers dependable semiconductor-grade protection for demanding industrial power circuits. It carries UL Recognized, CSA Certified, and IEC Rated compliance for use across North American and international electrical systems.
Key Features
- Amperage Rating: 315A RMS current rating provides reliable, high-capacity circuit protection.
- Voltage Rating: Rated 690 Vac (IEC) for demanding industrial and international power systems.
- Class aR Construction: High speed Class aR fuse design engineered specifically for semiconductor and DC drive protection.
- Interrupt Rating: 100 kAIC interrupt rating delivers dependable short-circuit clearing performance.
- Fuse Indicator: Non-indicating, square body US style design (-FU/115 without indicator).
- Watt Losses: 75W watt loss rating supports efficient thermal performance under load.
- Physical Dimensions: Measures 5.433 IN in length, 2.087 IN in height, and .315 IN in width, weighing 1.6456 LB.
Certifications & Compliance
- UL Recognized
- CSA Certified
- IEC Rated
- CE Marked
- RoHS Compliant
Technical Specifications
- Amperage Rating: 315A
- Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
- Class: Class aR
- Clearing I2t: Clearing at 1000V: 77500, Clearing at 1250V: 105000
- Current Rating: 315A RMS
- Fuse Indicator: Non Indicating
- Interrupt Rating: 100 kAIC
- Packaging Type: Standard
- Pre Arc I2t: 13000
- Voltage Rating: 690 Vac (IEC)
- Watt Losses: 75W
- Product Type: Square body US style, -FU/115 without indicator
- Product Length: 5.433 IN
- Product Details: Square body US style, -FU/115 without indicator
- 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
- Semiconductor Overcurrent Protection
- Industrial and Commercial Electrical Systems
Why Bussmann?
Bussmann engineers the 170M5690 with Class aR high speed construction, a 100 kAIC interrupt rating, and UL Recognized, CSA Certified, and IEC Rated compliance to deliver dependable, code-compliant overcurrent protection. This combination of high-speed clearing performance and international certification makes it a trusted choice for semiconductor and DC drive protection in professional electrical installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 315A
- Class:
- Class aR
- Clearing I2t:
- Clearing at 1000V: 77500 , Clearing at 1250V: 105000
- Current Rating:
- 315A RMS
- Fuse Indicator:
- Non Indicating
- Interrupt Rating:
- 100 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 13000
- Voltage Rating:
- 690 Vac (IEC)
- Watt Losses:
- 75W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Length:
- 5.433 IN
- Product Details:
- Square body US style, -FU/115 without indicator
- Product Height:
- 2.087 IN
- Product Weight:
- 1.6456 LB
- Product Width:
- .315 IN