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Product Specifications:
| Item | Semiconductor Fuse |
| Ac Max. I R Breaking Capacity I1 | 63 kA |
| Ac Voltage | 500V AC |
| Ac/dc | AC/DC |
| Amps | 400A |
| Body Material | Fiberglass |
| Body Style | Bolt On |
| Body/insulating Material | GMG |
| Connection/terminal Material | Copper |
| Connection/terminal Type | Blade |
| Dc Voltage | 500V DC |
| Dia. | 38.1 mm |
| Element | Single |
| Equivalent Brand And Series | A50QS, BUSSMANN FWH, LITTELFUSE L50S, MERSEN A50P |
| Equivalent Series | A50P, A50Qs, Fwh, L50S |
| Finish | TiN Plated |
| Fits Fuse Block Style | Nonrejection |
| Frequency | 50/60 Hz |
| Fuse Size | 4 3/8" x 1 1/2" |
| Interrupt Rating | 200 kA at 500V AC, 87 kA at 500V DC |
| Length | 110.2 mm |
| Mounting | Bolted |
| Product Datasheet | mersen-ferraz-a50qs100-4.pdf |
| Product Group | Semiconductor Protection Fuses |
| Rated Voltage Ac Ul | 500V |
| Rated Voltage Dc Ul | 500V |
| Rohs Compliant | Yes |
| Series | A50QS Series |
| Speed | Fast Acting |
| Speed Characteristic | High Speed |
| Speed Type | High Speed |
| Visual Indication | Non Indicating |
Shipping Info:
| Ship weight (kg) | 0.31 |
| Ship height (cm) | 7.62 |
| Ship length (cm) | 11.02 |
| Ship width (cm) | 3.81 |
| Country of Origin | MX |
Documentation:
Product Variants
| Product | Model | Amps | Dia. | Mounting | Connection/terminal Type | Ac Max. I R Breaking Capacity I1 | Connection/terminal Material | Finish | Ac/dc | Pkg. Qty. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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A50QS1000-4 | 1000A | 73.2 mm | Bolted | Blade | 50 kA | Copper | Silver Plated | AC/DC | 1 | €1,102.26 | |
![]() |
A50QS1000-4IL | 1000A | 73.2 mm | Bolted | Blade | 50 kA | Copper | Silver Plated | AC/DC | 1 | €1,376.18 | |
![]() |
A50QS100-4 | 100A | 25.4 mm | Bolted | Blade | 50 kA | Brass | TiN Plated | AC/DC | 1 | €106.18 | |
![]() |
A50QS100-4IL | 100A | 25.4 mm | Bolted | Blade | 50 kA | Brass | TiN Plated | AC/DC | 1 | €140.00 | |
![]() |
A50QS100-4Y | 100A | 25.4 mm | Bolted | Blade | 50 kA | Brass | TiN Plated | AC/DC | 1 | €109.45 | |
![]() |
A50QS10-1 | 10A | 14.3 mm | Clip | Ferrule | 50 kA | Copper | TiN Plated | AC | 1 | - | RFQ
|
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A50QS1200-4 | 1200A | 73.2 mm | Bolted | Blade | 50 kA | Copper | Silver Plated | AC/DC | 1 | €1,334.79 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
MERSEN FERRAZ A50QS400-4 Semiconductor Fuse, High Speed, 500V 400A, aR Class
€201.04 /unit




