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Bussmann 170M3222 Eaton Series High-Speed Square Body Fuse, 700V/690V, 550A, Class aR
The Bussmann 170M3222 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) and 690V (IEC) with a 550A amperage rating and an exceptional 200 kAIC interrupting rating, this Class aR fuse is built to a square-body, blade end X blade end configuration per DIN 43 620 for direct mounting in semiconductor and power electronics equipment. A top-mounted fuse status indicator provides fast visual confirmation of fuse condition, helping maintenance teams reduce downtime on critical circuits.
Key Features
- Voltage Rating: 700V (UL) and 690V (IEC) for use across both UL and IEC-rated systems.
- Amperage Rating: 550A rating sized for high-current semiconductor protection duty.
- Interrupting Rating: 200 kAIC interrupting capacity for demanding short-circuit conditions.
- Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection schemes.
- Terminal Configuration: Blade end X blade end square body construction with slotted, center-bolted tags per DIN 43 620.
- Status Indicator: Top fuse status indicator gives a quick visual check of fuse condition without disconnecting the circuit.
- Let-Through Data: Pre-arc I2t of 34000 and clearing I2t of 230000 at 660V, with clearing loss of 75, for precise protection coordination.
Certifications & Compliance
- IEC Rated (690V)
- CE Marked
Technical Specifications
- Amperage Rating: 550 A
- Application: semiconductor protection
- Certifications: IEC Rated
- Clearing I2t: 230000 at 660 V
- Clearing Loss: 75
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl: No
- Packaging Type: Standard
- Pre Arc I2t: 34000
- Product Height: 62 mm
- Product Length Depth: 290 mm
- Product Weight: .322 g
- Product Width: 142 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
Typical Applications
- Semiconductor Device Protection
- Power Electronics and Drive Systems
- Motor Control and Industrial Power Distribution
- High-Speed Circuit Protection for Rectifiers and Converters
- Industrial and Commercial Electrical Systems
Why Bussmann?
Bussmann by Eaton is a recognized name in circuit protection, and the 170M3222 reflects that standard with a robust square body construction, CE marking, and a 200 kAIC interrupting rating built for coordinated semiconductor protection. The top fuse status indicator and DIN 43 620 blade end X blade end configuration make it a dependable choice for engineers who need consistent, code-compliant performance in professional electrical installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 550 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 230000 at 660 V
- Clearing Loss:
- 75
- 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:
- 34000
- Product Height:
- 62 mm
- Product Length Depth:
- 290 mm
- Product Weight:
- .322 g
- Product Width:
- 142 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