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Bussmann 170M5508 Class aR High-Speed Square Body Fuse, 400A
The Bussmann 170M5508 is a Class aR high-speed square body fuse rated 400A RMS, engineered for fast-acting protection of semiconductor devices and power electronics. Built with a 200 kAIC interrupt rating and dual voltage ratings of 1300 Vac (UL) and 1100 Vac (IEC), this fuse is designed for demanding DC common bus, DC drive, and power converter/rectifier applications. It is UL Recognized and IEC Rated, and carries CE marking and RoHS compliance for use in professional industrial power systems.
Key Features
- Fuse Class: Class aR high-speed, square body construction purpose-built for semiconductor and power electronics protection.
- Current Rating: 400A RMS for dependable performance in DC common bus, DC drive, and power converter/rectifier circuits.
- Voltage Rating: 1300 Vac (UL), 1100 Vac (IEC) supports use across both UL and IEC-governed installations.
- Interrupt Rating: 200 kAIC delivers robust short-circuit interrupting capability for high-fault-current systems.
- Mounting: Flush mounting configuration suited to standard square body fuse holders and bus arrangements.
- Fuse Indicator: Non-indicating design.
- I²t Ratings: Pre-arc I²t of 11000 and clearing I²t of 74000 at 660V for precise let-through coordination with upstream and downstream devices.
- Watt Losses: 65W rated power loss.
Certifications & Compliance
- UL Recognized
- IEC Rated
- CE Marked
- RoHS Compliant
Technical Specifications
- Amperage Rating: 400A
- Current Rating: 400A RMS
- Class: Class aR
- Voltage Rating: 1300 Vac (UL), 1100 Vac (IEC)
- Interrupt Rating: 200 kAIC
- Fuse Indicator: Non Indicating
- Mounting Method: Flush
- Pre Arc I²t: 11000
- Clearing I²t: Clearing at 660V: 74000
- Watt Losses: 65W
- Application: DC common bus, DC drives, power converters/rectifiers
- Packaging Type: Standard
Typical Applications
- DC Common Bus Systems
- DC Drives
- Power Converters and Rectifiers
- Semiconductor Circuit Protection
- Industrial Power Electronics Protection
Why Bussmann?
Bussmann engineers the 170M5508 as a Class aR high-speed square body fuse with a 200 kAIC interrupt rating and dual UL/IEC voltage ratings, giving electrical professionals a dependable option for protecting sensitive semiconductor and power conversion equipment. Its UL Recognized and IEC Rated status, along with CE marking and RoHS compliance, supports code-compliant installations across industrial power systems where fast, coordinated fault clearing is essential.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 400A
- Application:
- DC common bus, DC drives, power converters/rectifiers
- Class:
- Class aR
- Clearing I2t:
- Clearing at 660V: 74000
- Current Rating:
- 400A RMS
- Fuse Indicator:
- Non Indicating
- Interrupt Rating:
- 200 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 11000
- Voltage Rating:
- 1300 Vac (UL), 1100 Vac (IEC)
- Watt Losses:
- 65W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Square Body Fuses
- 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