$200.00
| Voltage | AH/kVA | Length | Width | Height | Weight |
|---|---|---|---|---|---|
| 690 V AC | 350 A | 53mm | 69mm | 51mm | .40kg |
| Voltage | 690 V AC |
| Amp/H | 350 A |
| Length | 53mm |
| Width | 69mm |
| Height | 51mm |
| Weight | .40kg |
The BUSSMAN 170M4561 is a high-speed semiconductor (aR) square-body fuse engineered for reliable over-current protection in demanding UPS and power-electronic applications. Designed for critical protection of rectifiers, inverters, and common-bus rails, this fuse interrupts fault currents rapidly to safeguard semiconductors and uptime. This listing highlights reclaimed, continuity-tested units pulled from decommissioned, fully functional UPS systems.
Ultra-Rapid aR Curve:
Purpose-built for semiconductor circuits where fast, precise interruption is essential.
Size-1 Square-Body:
1GKN/50 form factor with flush-end contacts on 51 mm centers for drop-in replacement.
High Fault Withstand:
690 V AC (IEC) / 700 V AC (UL) rating with 200 kA interrupting capacity and center Type K indicator for clear blown-fuse status.
Reclaimed & Verified:
Each reclaimed fuse is continuity-tested and visually inspected; OEM-new stock available on request.
| Parameter | Value |
| Manufacturer | BUSSMAN (Eaton) |
| Part Number | 170M4561 |
| Fuse Type / Category | Semiconductor Protection, aR (high-speed) |
| Rated Voltage | 690 V AC (IEC) / 700 V AC (UL) |
| Rated Current | 350 A |
| Interrupting Capacity | 200 kA |
| Indicator | Center indicator, Type K (micro-switch-ready) |
| Body / Size | Square-body Size 1, 1GKN/50 |
| Terminals / Mounting | Flush-end contacts; 51 mm center-to-center |
| Pre-arcing I²t @ 660 V | 8,500 A²s |
| Clearing I²t @ 660 V | 59,000 A²s |
| Power Loss (at rated) | 60 W |
| Dimensions (L × W × H) | 53 mm × 69 mm × 51 mm (Size 1 square-body) |
| Approx. Weight | ≈ 0.40 kg |
| Compliance / Approvals | IEC rated, UL Recognized; CE-marked; RoHS compliant |
| UPC / EAN | UPC 051712812108 | EAN 5027590453509 |
| Fuse | Compatible UPS Models | Notes |
| 170M4561 | Used across UPS frames and power converters that specify Size-1 (1GKN/50) 690/700 V aR fuses. Representative applications include common-bus protection in large UPS systems, DC drives, and rectifier/inverter stacks. | Verify fitment: Size-1 body, 51 mm centers, and Type K indicator. Always match the exact OEM part number/BOM before ordering. |
