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$158.54
| Voltage | WPC | AH/kVA | Length | Width | Height | Weight |
|---|---|---|---|---|---|---|
| 500 V AC | N/A | 800 A | 164.3mm | 63.5mm | N/A | 3.0 lb |
| Voltage | 500 V AC |
| WPC | N/A |
| Amp/H | 800 A |
| Length | 164.3mm |
| Width | 63.5mm |
| Height | N/A |
| Weight | 3.0 lb |
The GOULD SHAWMUT A50P800-4TA (Mersen/Ferraz Shawmut) is an Amp-Trap® Form 101 high-speed (fast-acting) semiconductor fuse with an integral Trigger Actuator (TA) indicator. It’s engineered to protect 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:
Very fast-acting, current-limiting element with low I²t for semiconductor safety.
Bolt-Down Blade Body:
Round Form 101 cartridge with bolt-in blades for robust, low-impedance connections.
500 VAC / 450 VDC Class:
Suitable for higher-voltage AC/DC drives, UPS systems, and inverter stacks; high interrupt ratings for demanding fault levels.
Reclaimed & Verified:
Every unit is continuity-tested and visually inspected; new Mersen stock available by request.
| Parameter | Value |
| Manufacturer | Gould Shawmut (Mersen / Ferraz Shawmut) |
| Part Number | A50P800-4TA |
| Fuse Type / Category | High-speed semiconductor fuse (fast-acting), Form 101, indicating (TA) |
| Rated Voltage | 500 V AC / 450 V DC |
| Rated Current | 800 A |
| Interrupting Capacity | 100 kA (AC @ 500 V) | 79 kA (DC @ 450 V) |
| Indicator | Trigger Actuator (TA) integral indicator |
| Body / Size | Round cartridge, Form 101; Ø 2.50 in |
| Terminals / Mounting | Bolt-down blade terminals (silver-plated copper) |
| Pre-arcing I²t | See A50P series table (800 A) |
| Clearing I²t | See A50P series table @ 60 Hz |
| Power Loss (at rated) | See datasheet |
| Dimensions (L × Ø) | 6.47 in × 2.50 in (164.3 mm × 63.5 mm) |
| Approx. Weight | ≈ 3.0 lb (typ.) |
| Compliance / Approvals | UL Recognized; RoHS compliant |
| UPC / EAN | — |
| Fuse | Compatible UPS/Power-Electronics Models | Notes |
| A50P800-4TA | UPS frames, DC drives, and converter stacks requiring 500 VAC/450 VDC, 800 A high-speed Form 101 bolt-in fuses with TA indication. | Verify blade geometry and size (≈ 6.47″ × 2.50″). TA indicates integral trigger actuator/indicator. |
