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$159.00
| Voltage | AH/kVA | Length | Width | Height | Weight |
|---|---|---|---|---|---|
| 600 V AC | 800 A | 219mm | 63.5mm | N/A | N/A |
| Voltage | 600 V AC |
| Amp/H | 800 A |
| Length | 219mm |
| Width | 63.5mm |
| Height | N/A |
| Weight | N/A |
The GOULD SHAWMUT A4BT800 (now Mersen/Ferraz Shawmut) is an Amp-Trap® Class L time-delay, current-limiting fuse for protecting mains, feeders, transformers, and high-inrush loads in UPS and power-electronic systems. This listing features reclaimed, continuity-tested units removed from decommissioned, fully functional equipment.
Time-Delay, Current-Limiting:
10-second delay at 500% rating handles motor/transformer inrush while providing low let-through energy (Class L).
Rugged Class L Construction:
Glass-melamine body with blade-stamped catalog number; unique dimensions prevent mis-replacement by other classes.
High Interrupt Ratings:
600 V AC / 500 V DC with 200 kA AC and 100 kA DC interrupting capacity.
Reclaimed & Verified:
Each unit is continuity-tested and visually inspected; new Mersen stock available by request.
| Parameter | Value |
| Manufacturer | Gould Shawmut (Mersen / Ferraz Shawmut) |
| Part Number | A4BT800 |
| Fuse Type / Category | UL Class L, time-delay, current-limiting |
| Rated Voltage | 600 V AC / 500 V DC |
| Rated Current | 800 A |
| Interrupting Capacity | 200 kA (AC @ 600 V) | 100 kA (DC @ 500 V) |
| Indicator | None (TA suffix indicates integral indicator: A4BT800-TA) |
| Body / Size | Class L cartridge, Ø 2.50 in body |
| Terminals / Mounting | Knife-blade ends; holder/clip mounted in Class L blocks |
| Pre-arcing I²t | See A4BT series table (800 A) |
| Clearing I²t | See A4BT series table @ 60 Hz |
| Power Loss (at rated) | See datasheet |
| Dimensions (L × Ø) | 8.625 in × 2.50 in (219 mm × 63.5 mm) |
| Approx. Weight | — |
| Compliance / Approvals | UL 248-10 Listed; CSA C22.2; RoHS |
| UPC / EAN | UPC 78200193990 |
| Fuse | Compatible UPS/Power-Electronics Models | Notes |
| A4BT800 | UPS frames, feeders, and converter stacks specifying 600 VAC/500 VDC Class L time-delay fuses in the 800 A range. | Verify Class L holder compatibility, overall size (≈ 8.625″ × 2.50″), and indicator requirement (TA version) against the OEM BOM. |
