Bussmann 170M4219 Eaton Series High-Speed Square Body Fuse, 900A, Class aR
The Bussmann 170M4219 is an Eaton series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 900A with a 200 kAIC interrupting capacity, this Class aR fuse carries a voltage rating of 1250V (IEC), 1300V (UL), and 690V, making it suitable for accompanied semiconductor protection in high-power circuits. Built to the DIN 43 620 standard with blade end X blade end terminations and a top fuse status indicator, the 170M4219 delivers fast, reliable clearing performance for solid-state power conversion equipment.
Key Features
- Amperage Rating: 900A continuous current rating for high-power semiconductor circuits.
- Interrupting Rating: 200 kAIC for dependable short-circuit protection.
- Voltage Rating: 1250V (IEC), 1300V (UL), 690V AC for broad system compatibility.
- Utilization Category: Class aR (accompanied semiconductor protection) for use alongside other overcurrent devices.
- Fuse Shape: Square body with slotted center bolted tags for secure blade end X blade end connections.
- Fuse Status Indicator: Top-mounted indicator provides quick visual confirmation of fuse condition.
- Standard Dimensions: Manufactured to DIN 43 620 for standardized fit and mounting.
- Clearing Characteristics: Pre-arc I2t of 69500 and clearing I2t of 11500 at 660V for precise coordination in semiconductor circuits.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 900 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Clearing I2t: 11500 at 660 V
- Clearing Loss: 100
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Pre Arc I2t: 69500
- Product Height: 142 mm
- Product Length Depth: 62 mm
- Product Weight: .001 g
- Product Width: 230 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
Typical Applications
- Semiconductor Device Protection
- Variable Frequency Drives (VFDs)
- Rectifier and Power Conversion Circuits
- Industrial Power Electronics
- High-Speed Overcurrent Protection Coordination
Why Bussmann?
Bussmann by Eaton is a recognized name in circuit protection, and the 170M4219 reflects that standard with UL Recognized and CE Marked compliance for use in regulated electrical systems. Its Class aR utilization category and DIN 43 620 construction make it a dependable choice for engineers who need coordinated, code-compliant semiconductor protection. Choose Bussmann for high-speed fuse performance built for professional power electronics applications.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 900 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 11500 at 660 V
- Clearing Loss:
- 100
- Compliances:
- CE Marked
- Connection:
- Blade end x blade end
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 69500
- Product Height:
- 142 mm
- Product Length Depth:
- 62 mm
- Product Weight:
- .001 g
- Product Width:
- 230 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse