Siemens 3NE8731-1 SITOR Fuse Link, NH000, 315A, 690V AC, aR Semiconductor Protection Original Brand New
$252.46
High-performance SITOR fuse link designed for semiconductor protection. Featuring an NH000 size with bolt-on links, this 315A fuse operates at 690V AC / 440V DC and includes a front indicator for easy status monitoring.
Availability: In stock
Overview
The Siemens 3NE8731-1 belongs to the SITOR series of high-speed fuses, specifically engineered to protect power semiconductors (such as diodes, thyristors, and GTOs) from the damaging effects of short circuits. Its aR utilization category ensures rapid response times, making it an essential component for modern power electronics and industrial converters.
Key Features & Benefit
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Ultra-Fast Response: Specifically designed as an aR class fuse for superior semiconductor protection.
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Bolt-on Connectivity: Equipped with bolt-on links for secure, vibration-resistant installation in industrial environments.
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Front Indicator: Features a clear front-facing visual indicator for immediate identification of blown fuses.
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Dual Voltage Rating: Versatile operation with ratings up to 690 V AC and 440 V DC.
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Compact Design: The NH000 form factor allows for high-density power distribution in control cabinets.
Function
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Protects power electronic devices from short circuits
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Ideal for inverters, converters, UPS systems, motor drives, and rectifiers
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Ensures system reliability in industrial automation and power distribution
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Minimizes downtime through fast fault detection
Application
The Siemens 3NE8731-1 is ideal for:
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Variable speed drive systems and inverters.
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Soft starters and power controllers.
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DC drive systems and rectifiers.
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UPS (Uninterruptible Power Supply) systems.
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| Weight | 0.144 kg |
|---|---|
| Dimensions | 60.00 × 105.00 × 24.00 mm |
| Brand | SIEMENS |
| product brand name | SENTRON |
| product designation | SITOR fuse link |
| design of the product | With bolt-on links |
| design of an identification indicator | front indicator |
| design of the switching contact | With bolt-on links, silver-plated |
| design of the fuse link | SITOR, LV HRC design |
| size of fuse system / acc. to DIN EN 60269-1 | NH000 |
| operating class of the fuse link | aR |
| varying load factor (WL) | 0.85 |
| type of voltage / of the operating voltage | AC/DC |
| supply voltage | – |
| ● at DC | 440 V |
| switching capacity current | – |
| ● at DC / acc. to IEC 60947-2 / rated value | 50 kA |
| ● acc. to IEC 60947-2 / rated value | 200 kA |
| power loss [W] | – |
| ● for rated value of the current / at AC / in hot operating state / per pole | 54 W |
| operational current | – |
| ● at 30 °C / rated value | 315 A |
| ● at 40 °C / rated value | 315 A |
| ● at 45 °C / rated value | 315 A |
| ● at 50 °C / rated value | 311.85 A |
| ● at 55 °C / rated value | 308.7 A |
| ● at 60 °C / rated value | 305.55 A |
| ● at AC / rated value | 315 A |
| product description | Not non-interchangeable |
| mounting position | Any, preferably vertical |
| ambient temperature / during operation | – |
| ● minimum | -20 °C |
| ● maximum | 50 °C |
| environmental category | -20 to +50 at 95% relative humidity |
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