170M Series Overview
The Bussmann 170M series represents the industry standard for high-speed fuses used in variable frequency drive (VFD) and uninterruptible power supply (UPS) applications. These current-limiting, fast-acting fuses are specifically designed to protect sensitive semiconductor devices from destructive overcurrents.
Key Features
- Precise I²t characteristics for proper coordination with semiconductors
- Current-limiting design reduces fault energy let-through
- Fast operation typically faster than 1/2 cycle
- Wide voltage and current range coverage
- Industry standard dimensions for common mounting
Applications
- Variable Frequency Drives (VFDs)
- Uninterruptible Power Supplies (UPS)
- DC Link Protection
- Semiconductor Equipment Protection
- Power Electronics
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | UL 248-13, IEC 60269-2 |
| Voltage Rating | 300VAC, 480VAC, 600VAC, 690VAC |
| Current Rating | 1A to 1000A (various options) |
| Interrupting Rating | 200,000A RMS Symmetrical |
| Current Limiting | Class CC (Current Limiting) |
| Time Delay | Fast Acting (FF) or Standard (F) |
| Operating Temperature | -40°C to +85°C |
| Mounting Type | Blade, Bolted, Panel Mount Options |
Engineer's Perspective
When implementing 170M series fuses for VFD protection, it's critical to ensure proper coordination with the drive's short circuit withstand capability. The precise I²t characteristics of these fuses make them ideal for protecting the sensitive IGBTs and diodes in modern power electronics.
Our application engineers recommend selecting the fuse based on the VFD's input current rating and the available fault current at the installation point. For detailed coordination studies, contact our technical support team.
Related Products
Resources
- VFD Protection Application Guide
- Semiconductor Protection Guide
- 170M Series Spec Sheet
- Complete 170M Series Catalog
Availability & Ordering
Stock Status: In Stock
Most popular 170M series fuses are maintained in our global inventory for fast delivery.
Request Quote Technical Support