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Bussmann 170L9203 Eaton Series High-Speed Square Body Fuse, Class aR, 630A, 700V/690V
The Bussmann 170L9203 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial power applications. Rated 700V (UL) / 690V (IEC), 660V AC, and 630A, this Class aR fuse features a square body with slotted, center-bolted tags for a secure, low-resistance connection to busbar and switchgear assemblies. A top fuse status indicator provides quick visual confirmation of fuse condition, helping maintenance teams spot a blown fuse at a glance without disassembly.
Key Features
- Amperage Rating: 630A high-speed rating suited for coordinated semiconductor circuit protection.
- Voltage Rating: 700V (UL), 690V (IEC), and 660V AC for demanding power distribution circuits.
- Square Body Construction: Slotted, center-bolted tags provide a rugged, low-resistance mounting connection.
- Top Fuse Status Indicator: Visual indication of fuse condition speeds up field troubleshooting and maintenance.
- Class aR Utilization Category: Accompanied semiconductor protection for coordinated overcurrent protection schemes.
- Application: Purpose-built for semiconductor protection in power electronics and drive systems.
- Voltage Type: AC-rated design for industrial power circuits.
Certifications & Compliance
- 700V Voltage Rating per UL Standards
- 690V Voltage Rating per IEC Standards
Technical Specifications
- Amperage Rating: 630 A
- Application: semiconductor protection
- Compliances: Contact factory
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (Imgl): No
- Packaging Type: Standard
- Product Height: 76 mm
- Product Length Depth: 168 mm
- Product Weight: 1760 g
- Product Width: 95 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 660 V
- Voltage Type: AC
Typical Applications
- Semiconductor Protection in Power Electronics
- Variable Frequency Drive (VFD) and Motor Control Circuits
- Industrial Power Distribution and Switchgear
- Busbar-Mounted High-Speed Fuse Applications
Why Bussmann?
Bussmann by Eaton is a recognized name in circuit protection, and the 170L9203 reflects that expertise with rugged square body construction, center-bolted tag connections, and a Class aR utilization category built for coordinated semiconductor protection. The top fuse status indicator adds practical, field-ready convenience for maintenance teams working on demanding power systems. Choose Bussmann for dependable, standards-aligned overcurrent protection engineered for industrial power electronics and drive applications.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 630 A
- Application:
- semiconductor protection
- Class:
- Class aR
- Compliances:
- Contact factory
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Packaging Type:
- Standard
- Product Height:
- 76 mm
- Product Length Depth:
- 168 mm
- Product Weight:
- 1760 g
- Product Width:
- 95 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 660 V
- Voltage Type:
- AC
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse