170M5166 EATON BUSSMANN FUSE
170M5166 EATON BUSSMANN FUSE – High-Speed 1000A 690V/700V Size 2 Square Body Fuse
The 170M5166 EATON BUSSMANN FUSE (Model 170M5166) is a high-performance, high-speed square body semiconductor protection fuse manufactured by Eaton’s Bussmann series. Engineered specifically for heavy-duty power conversion and industrial electronics, this 1000-amp Class aR high-speed fuse provides reliable, ultra-fast protection for power semiconductors—including thyristors, diodes, IGBTs, and silicon-controlled rectifiers (SCRs).
With a voltage rating of 690 VAC (IEC) / 700 VAC (UL) and a massive interrupting capacity of 200kA RMS Symmetrical, the 170M5166 EATON BUSSMANN FUSE opens instantly under severe short-circuit fault conditions. Designed in a standardized DIN 43653 Size 2 square body form factor with slotted blade terminals (type 2/110), it provides a low resistance of 0.0723 m Omega at 21° C to minimize power loss (I^2t) and reduce heat dissipation inside heavy industrial electrical enclosures.
As shown in the image, the fuse features a ceramic square body marked with “EATON® BUSSMANN SERIES 170M5166 1000A 690V~IEC IR700-200kA 700V~ aR 2/110 0.0723 mΩ(21°C)”, fitted with a top visual trip indicator pin and slotted blade terminals for secure busbar mounting.
Key Features of the 170M5166 EATON BUSSMANN FUSE
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Class aR Semiconductor Protection: Optimized for partial-range high-speed short-circuit protection, safeguarding delicate power semiconductors against catastrophic thermal damage.
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DIN 43653 Size 2 Form Factor: Features a size 2 square body with standard 110 mm mounting centers (type 2/110) for straightforward installation onto distribution busbars.
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Slotted Blade End Terminals: Built with slotted blade terminals to allow fast, secure alignment and bolted connection inside power conversion panels.
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High 200 kA Breaking Capacity: Rated for an interrupting capacity up to 200 kA RMS Symmetrical at 700 VAC, ensuring maximum fault interruption safety for high-power systems.
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Visual Trip Indicator: Integrated top-mounted indicator pin provides clear visual status of fuse operation for fast troubleshooting and maintenance.
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Low Power Dissipation: Features a low cold resistance of 0.0723 m Omega, limiting total watt loss and thermal stress during continuous 1000 A operation.
Common Applications and Practical Usage
The extreme current limitation and heavy-duty rating of the 170M5166 EATON BUSSMANN FUSE make it vital across high-power industrial environments:
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Variable Frequency Drives (VFDs): Protects high-power AC and DC variable speed drives, soft starters, and inverter power blocks.
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Industrial Power Converters & Rectifiers: Guards large industrial rectifiers, electrolysis equipment, and high-voltage DC power supplies.
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Uninterruptible Power Systems (UPS): Essential for high-capacity UPS power modules, battery storage isolation, and static transfer switches.
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DC Common Bus Systems & Solar Inverters: Provides high-speed short-circuit clearing across centralized DC buses and renewable energy grid tie systems.
Technical Specifications
The core electrical, physical, and compliance parameters for the 170M5166 EATON BUSSMANN FUSE are detailed below:
| Parameter Specification | Technical Details & Operational Values |
| Component Classification | High-Speed Square Body Semiconductor Fuse |
| Primary Target Keyword | 170M5166 EATON BUSSMANN FUSE |
| Brand / Series | Eaton Bussmann Series / 170M Square Body |
| Amperage Rating | 1000 Amps (1000 A) |
| Voltage Rating | 690 VAC (IEC) / 700 VAC (UL) |
| Interrupt Rating (IR) | 200 kA RMS Symmetrical at 700 VAC |
| Performance Class | Class aR (High-Speed / Partial Range) |
| Fuse Size & Terminal Type | Size 2, DIN 43653 Slotted Blades (110 mm Mounting Centers / 2/110) |
| Electrical Resistance | 0.0723 m Omega at 21°C |
| Status Indicator | Visual Top Indicator Pin (Optional microswitch compatible) |
| Agency Certifications | UL Recognized (E125085), CSA Certified, IEC 60269-4, CE, RoHS |
Operating Guidelines and Usage Tips
SAFETY NOTICE: Always isolate power supplies and confirm circuits are de-energized using a calibrated voltage meter before replacing high-power semiconductor fuses.
Torque Specifications: Ensure busbar connection bolts are torqued according to manufacturer specifications to maintain low contact resistance and prevent local thermal hot spots.
Application Precaution: High-speed Class aR fuses are designed exclusively for short-circuit protection of semiconductors and should be paired with overload protection devices for full-range protection.
To review official IEC high-speed square body fuse standards and industrial power protection criteria, consult the International Electrotechnical Commission (IEC) Portal.
To check regional warehouse inventory availability or request commercial quotes for volume electrical fuses, visit the Control Qatar Contact Page.
