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A4BY800 | Mersen / Ferraz Shawmut A4BY Series Class L 800A 600VAC Current Limiting Fuse
- Regular price
- $285.00
- Sale price
- $285.00
- Regular price
-
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Product Description P/N: A4BY800
Description
The Mersen / Ferraz Shawmut A4BY800 is an 800 amp Class L current-limiting fuse engineered for high-current protection in low-voltage electrical systems. It provides dependable interruption of overloads and short-circuit faults in industrial and commercial power distribution applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Mersen / Ferraz Shawmut |
| Category | Fuses |
| Part Number | A4BY800 |
| Subcategory | Class L Fuse |
| ETIM Class | EC002704 |
| Fuse Type | Current Limiting Low Voltage |
| Series | A4BY |
| Indication Type | Non-Indicating |
| Rejection Type | Rejection |
| Amperage Rating | 800 A |
| Voltage Rating | 600 VAC / 300 VDC |
| Interrupt Rating | 200 kA at 600 VAC / 100 kA at 300 VDC |
| Fuse Class | Class L |
| Response Time | 4 s at 500% overload |
| Element Type | Dual Element |
| Terminal Type | Blade |
| Mounting Type | Bolted-On |
| Body Type | Cylindrical |
| Body Material | Fiber |
| Body Size | 2.5 in Dia × 8.625 in L |
Information About A4BY800
The A4BY800 is part of the Mersen / Ferraz Shawmut A4BY fuse family, designed for demanding low-voltage, high-current protection requirements. Its dual-element current-limiting construction reduces let-through energy during fault conditions, helping protect downstream conductors and equipment. The rejection-style design ensures proper installation only in compatible Class L fuse holders, reducing the risk of incorrect replacement. Typical applications include industrial switchgear, main feeders, and power distribution systems requiring high interrupting capacity and consistent protection performance.
Key Features:
- A4BY Series Construction: Designed for low-voltage, high-current industrial protection applications.
- Class L Current Limiting Performance: Minimizes peak fault currents to protect electrical systems and equipment.
- High Interrupting Capacity: Rated at 200 kA at 600 VAC for severe short-circuit conditions.
- Dual-Element Fuse Design: Provides time-delay characteristics for overloads and rapid response to fault currents.
- Rejection-Type Configuration: Prevents improper fuse installation by enforcing holder compatibility.
- Non-Indicating Operation: Suitable for systems where external fuse status monitoring is used.
- Bolted Blade Terminals: Ensures secure, low-resistance connections in high-current installations.
The A4BY800 delivers the reliability and precision required for protecting high-capacity power distribution circuits in industrial electrical environments.
Description
The Mersen / Ferraz Shawmut A4BY800 is an 800 amp Class L current-limiting fuse engineered for high-current protection in low-voltage electrical systems. It provides dependable interruption of overloads and short-circuit faults in industrial and commercial power distribution applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Mersen / Ferraz Shawmut |
| Category | Fuses |
| Part Number | A4BY800 |
| Subcategory | Class L Fuse |
| ETIM Class | EC002704 |
| Fuse Type | Current Limiting Low Voltage |
| Series | A4BY |
| Indication Type | Non-Indicating |
| Rejection Type | Rejection |
| Amperage Rating | 800 A |
| Voltage Rating | 600 VAC / 300 VDC |
| Interrupt Rating | 200 kA at 600 VAC / 100 kA at 300 VDC |
| Fuse Class | Class L |
| Response Time | 4 s at 500% overload |
| Element Type | Dual Element |
| Terminal Type | Blade |
| Mounting Type | Bolted-On |
| Body Type | Cylindrical |
| Body Material | Fiber |
| Body Size | 2.5 in Dia × 8.625 in L |
Information About A4BY800
The A4BY800 is part of the Mersen / Ferraz Shawmut A4BY fuse family, designed for demanding low-voltage, high-current protection requirements. Its dual-element current-limiting construction reduces let-through energy during fault conditions, helping protect downstream conductors and equipment. The rejection-style design ensures proper installation only in compatible Class L fuse holders, reducing the risk of incorrect replacement. Typical applications include industrial switchgear, main feeders, and power distribution systems requiring high interrupting capacity and consistent protection performance.
Key Features:
- A4BY Series Construction: Designed for low-voltage, high-current industrial protection applications.
- Class L Current Limiting Performance: Minimizes peak fault currents to protect electrical systems and equipment.
- High Interrupting Capacity: Rated at 200 kA at 600 VAC for severe short-circuit conditions.
- Dual-Element Fuse Design: Provides time-delay characteristics for overloads and rapid response to fault currents.
- Rejection-Type Configuration: Prevents improper fuse installation by enforcing holder compatibility.
- Non-Indicating Operation: Suitable for systems where external fuse status monitoring is used.
- Bolted Blade Terminals: Ensures secure, low-resistance connections in high-current installations.
The A4BY800 delivers the reliability and precision required for protecting high-capacity power distribution circuits in industrial electrical environments.