Bussmann 170M5141 Class aR High Speed Fuse, 350A, 1250V
The Bussmann 170M5141 is a Class aR high speed fuse engineered for demanding power electronics applications, rated 350A RMS at 1250 Vac (IEC) / 1300 Vac (UL) with a 100 kAIC interrupt rating. Built in a square body configuration with a DIN 43 620 blade-style mount, this fuse is designed for DC common bus systems, DC drives, power converters/rectifiers, and reduced voltage starters. It is IEC Rated and UL Recognized, with CE marking and RoHS compliance.
Key Features
- Compact Square Body Design: Measures 5.433 IN long, 2.087 IN high, and .315 IN wide, with a DIN 43 620 blade-style mount for standard fuse holders.
- Class aR Construction: High speed semiconductor fuse type optimized for protecting power electronic devices in DC applications.
- Amperage Rating: 350A RMS current rating for reliable overcurrent protection in high-power circuits.
- Voltage Rating: Rated 1250 Vac (IEC) and 1300 Vac (UL) for use across international and domestic system voltages.
- Interrupt Rating: 100 kAIC interrupt capacity provides robust short-circuit protection.
- I2t Ratings: Pre-arc I2t of 16500 and clearing I2t of 97500 at 1000V / 135000 at 1250V for coordination with other devices.
- Non-Indicating Fuse Body: Standard non-indicating design for straightforward installation.
- Watt Losses: Rated at 80W for thermal management planning.
Certifications & Compliance
- CE Marked
- RoHS Compliant
- IEC Rated
- UL Recognized
Technical Specifications
- Amperage Rating: 350A
- Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
- Class: Class aR
- Clearing I2t: Clearing at 1000V: 97500 , Clearing at 1250V:135000
- Current Rating: 350A RMS
- Fuse Indicator: Non Indicating
- Interrupt Rating: 100 kAIC
- Packaging Type: Standard
- Pre Arc I2t: 16500
- Voltage Rating: 1250 Vac (IEC), 1300 Vac (UL)
- Watt Losses: 80W
- Product Type: Square body, -/110 visual indicator
- Product Length: 5.433 IN
- Product Details: Square body, -/110 visual indicator
- Mounting Method: Din 43 620 blade style
- 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 and Rectifiers
- Reduced Voltage Starters
- Industrial Power Electronics Circuits
Why Bussmann?
Bussmann fuses are engineered for demanding power electronics protection, and the 170M5141 is no exception, combining Class aR high speed operation with a 100 kAIC interrupt rating, UL Recognized and IEC Rated performance, CE marking, and RoHS compliance. This construction and certification helps ensure dependable, code-compliant overcurrent protection for critical DC drive and power conversion systems.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 350A
- Class:
- Class aR
- Clearing I2t:
- Clearing at 1000V: 97500 , Clearing at 1250V:135000
- Current Rating:
- 350A RMS
- Fuse Indicator:
- Non Indicating
- Interrupt Rating:
- 100 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 16500
- Voltage Rating:
- 1250 Vac (IEC), 1300 Vac (UL)
- Watt Losses:
- 80W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Length:
- 5.433 IN
- Product Details:
- Square body, -/110 visual indicator
- Mounting Method:
- Din 43 620 blade style
- Product Height:
- 2.087 IN
- Product Weight:
- 1.6456 LB
- Product Width:
- .315 IN