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Bussmann 170M6509 Class aR High Speed Fuse, 550A 700V
The Bussmann 170M6509 is a Class aR high speed fuse built for demanding DC power protection, rated 550A (550A RMS) at 700 Vac (UL) / 690 Vac (IEC) with a 200 kAIC interrupt rating. Its square body, flush-mount design is engineered for DC common bus systems, DC drives, and power converter/rectifier circuits where fast semiconductor-grade clearing is required. The fuse is CE Marked, RoHS Compliant, IEC Rated, and UL Recognized, giving specifiers a documented compliance path for industrial DC installations. With defined pre-arc and clearing I2t values, it supports accurate coordination in high-energy DC protection schemes.
Key Features
- Amperage Rating: 550A (550A RMS) for high-capacity DC circuit protection.
- Voltage Rating: 700 Vac (UL), 690 Vac (IEC) for dual-standard DC power applications.
- Interrupt Rating: 200 kAIC for reliable short-circuit protection in high-energy systems.
- Class aR Design: High speed construction suited to fast-clearing DC protection needs.
- I2t Characteristics: Pre-arc I2t of 19500 and clearing I2t of 135000 at 660V for precise protection coordination.
- Fuse Indicator: Non Indicating configuration.
- Mounting Method: Flush mounting for square body fuse installations.
- Watt Losses: 100W rated power dissipation.
Certifications & Compliance
- CE Marked
- RoHS Compliant
- IEC Rated
- UL Recognized
Technical Specifications
- Amperage Rating: 550A
- Application: DC common bus, DC drives, power converters/rectifiers
- Class: Class aR
- Clearing I2t: Clearing at 660V: 135000
- Current Rating: 550A RMS
- Fuse Indicator: Non Indicating
- Interrupt Rating: 200 kAIC
- Packaging Type: Standard
- Pre Arc I2t: 19500
- Voltage Rating: 700 Vac (UL), 690 Vac (IEC)
- Watt Losses: 100W
- Product Type: Square body -BKN/- type K indicator for micro
- Product Length: 5.433 IN
- Product Details: Square body -BKN/- 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 Drive Protection
- Power Converters
- Power Rectifiers
Why Bussmann?
Bussmann engineers the 170M6509 as a Class aR high speed fuse with a documented 200 kAIC interrupt rating and defined pre-arc/clearing I2t data, giving electrical professionals the coordination data needed for demanding DC power designs. CE Marked, RoHS Compliant, IEC Rated, and UL Recognized status supports specification across both UL and IEC-governed installations. For DC common bus, DC drive, and power converter/rectifier applications, the 170M6509 delivers documented, code-aware overcurrent protection from a manufacturer trusted throughout industrial electrical supply.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 550A
- Application:
- DC common bus, DC drives, power converters/rectifiers
- Class:
- Class aR
- Clearing I2t:
- Clearing at 660V: 135000
- Current Rating:
- 550A RMS
- Fuse Indicator:
- Non Indicating
- Interrupt Rating:
- 200 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 19500
- Voltage Rating:
- 700 Vac (UL), 690 Vac (IEC)
- Watt Losses:
- 100W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Length:
- 5.433 IN
- Product Details:
- Square body -BKN/- type K indicator for micro
- Mounting Method:
- Flush
- Product Height:
- 2.087 IN
- Product Weight:
- 1.6456 LB
- Product Width:
- .315 IN