$297.65
| Voltage | AH/kVA | Length | Width | Height | Weight |
|---|---|---|---|---|---|
| 1000 V | 450 A | 110.24mm | 50.80mm | n/a | .42kg |
| Voltage | 1000 V |
| Amp/H | 450 A |
| Length | 110.24mm |
| Width | 50.80mm |
| Height | n/a |
| Weight | .42kg |
The BUSSMANN FWH-450A is a North American–style high-speed (fast-acting) semiconductor fuse for protecting rectifiers, inverters, and DC common-bus rails in UPS and power-electronic systems. This listing features reclaimed, continuity-tested units removed from decommissioned, fully functional equipment.
High-Speed Protection:
Fast-acting element tailored for semiconductor circuits with tight let-through limits.
Stud-Mount Cartridge Body:
Bolt-down blade terminals for robust, low-impedance connections and easy service.
High Interrupt Ratings:
750Â VÂ AC / 750Â VÂ DC series rating with 200Â kA AC interrupt capacity (tested at 1000Â VÂ AC) and 50Â kA DC capability (at 500Â VÂ DC).
Reclaimed & Verified:
Every unit is continuity-tested and visually inspected; OEM-new stock available by request.
| Parameter | Value |
| Manufacturer | BUSSMANN (Eaton) |
| Part Number | FWH-450A |
| Fuse Type / Category | High-speed semiconductor fuse (fast-acting), non-indicating |
| Rated Voltage | 750Â VÂ AC / 750Â VÂ DC |
| Rated Current | 450Â A |
| Interrupting Capacity | 200Â kA (tested @ 1000Â VÂ AC) Â |Â 50Â kA (DC @ 500Â V) |
| Indicator | None (non-indicating) |
| Body / Size | Stud-mount cartridge (FWH series), Ă˜Â 2.000 in |
| Terminals / Mounting | Bolt-down blade terminals; two 0.25Â in holes on 0.780Â in centers (stud-mount) |
| Pre-arcing I²t @ 500 V | 24,700 A²s |
| Clearing I²t @ 500 V | 127,000 A²s |
| Power Loss (at rated) | 74Â W |
| Dimensions (L Ă— Ă˜) | 4.340 in Ă— 2.000 in  (110.24 mm Ă— 50.80 mm) |
| Approx. Weight | ≈ 0.92 lb  (≈ 0.42 kg) |
| Compliance / Approvals | UL Recognized; CSA Certified; CE-marked; RoHS compliant |
| UPC / EAN | UPC 051712150194  | EAN — |
| Fuse | Compatible UPS/Power-Electronics Models | Notes |
| FWH-450A | Used in UPS frames, DC drives, and converter stacks requiring BUSSMANN FWH high-speed fuses in the 450 A class (stud-mount, bolt-down blades). | Verify bolt-hole geometry (0.25 in on 0.780 in centers) and overall size (≈ 4.340 in Ă— 2.000 in) against the OEM part/BOM. |
