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MERSEN A70QS400-4 High Speed Fuse 401A
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High-speed protection for power semiconductors with high breaking capacity.
| Brand | MERSEN |
| Model | A70QS400-4 |
| Voltage | 700 VAC |
| Country of Origin | France |
| Weight | 0.8 kg |
| Dimensions | 200 mm x 50 mm x 50 mm |
| Warranty | 6 months |
| Certifications | UL, CSA, IEC |
| SKU/MPN | A70QS400-4 |
| In the Box | 1 x A70QS400-4 fuse |
| Current Rating | 400 A |
| Breaking Capacity | 200 kA |
| Class | aR |
| Mounting Type | Bolt-on |
| Operating Temperature | -40 to +125 °C |
| Material | Ceramic body, silver-plated contacts |
Key benefits: Fast-acting, high interrupting rating, compact design
Typical applications: Protection of drives, inverters, and power supplies in industrial and renewable energy systems
Lifecycle: Active
1 review for MERSEN A70QS400-4 High Speed Fuse 401A
Clear filtersOur Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don’t worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitve pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.

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Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.

James P. –
The power supply unit is stable under full load. Better than expected.