SIEMENS
High-performance SITOR semiconductor fuse link designed for superior circuit protection. Featuring an NH1 size with blade contacts, it provides a 250A rated current and gR operating class, ensuring rapid response for AC (690V) and DC (250V) applications.
The Siemens 3NE1227-2 SITOR Fuse Link is a high-performance semiconductor protection fuse designed for demanding industrial power applications. Built in NH1 size with blade contacts, this fuse ensures fast and reliable protection of sensitive power electronics such as converters, rectifiers, and inverters.
With a rated current of 250 A, AC voltage up to 690 V, and DC voltage up to 250 V, this gR characteristic fuse offers both short-circuit and overload protection. The integrated front indicator allows quick visual inspection, reducing downtime and improving maintenance efficiency.
Reliable protection for sensitive semiconductor devices
Fast-acting gR characteristic for superior fault response
High current handling for industrial applications
Visual front indicator for quick fuse status detection
Durable Siemens quality for long service life
Fuse Type: SITOR fuse link
Design: Blade contacts, NH1 size
Rated Current (In): 250 A
Rated Voltage AC: Up to 690 V
Rated Voltage DC: Up to 250 V
Utilization Category: gR (full-range semiconductor protection)
Indicator: Front-mounted fuse indicator
Application: Protection of power semiconductors and industrial electrical systems
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| SKU / Model | 3NE1227-2 |
|---|---|
| Brand | SIEMENS |
| product brand name | SENTRON |
| product designation | SITOR fuse link |
| design of the product | With blade contacts |
| design of an identification indicator | front indicator |
| design of the switching contact | With blade contacts, silver-plated |
| design of the fuse link | SITOR, LV HRC design |
| size of fuse system / acc. to DIN EN 60269-1 | NH1 |
| operating class of the fuse link | gR |
| varying load factor (WL) | 1 |
| type of voltage / of the operating voltage | AC/DC |
| supply voltage | - |
| ● at DC | 250 V |
| switching capacity current | - |
| ● acc. to IEC 60947-2 / rated value | 100 kA |
| power loss [W] | - |
| ● for rated value of the current / at AC / in hot operating state / per pole | 35 W |
| operational current | - |
| ● at 30 °C / rated value | 250 A |
| ● at 40 °C / rated value | 250 A |
| ● at 45 °C / rated value | 250 A |
| ● at 50 °C / rated value | 247.5 A |
| ● at 55 °C / rated value | 245 A |
| ● at 60 °C / rated value | 242.5 A |
| ● at AC / rated value | 250 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 |
| Miscellaneous | Miscellaneous |
| Weight | 0.602 kg |
| Dimensions | 178.00 × 200.00 × 85.00 mm |
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