Siemens 3NC1440 SITOR Cylindrical Fuse Link 40A, 14×51 mm, aR Characteristic Original Brand New

Overview

The Siemens 3NC1440 belongs to the SITOR series, specifically engineered to protect sensitive power semiconductors from the damaging effects of short circuits. Thanks to its aR utilization category, it provides a much faster response time than standard fuses, making it an essential component for converters, rectifiers, and UPS systems.

Key Benefit

• Precision Protection: Optimized ultra-rapid tripping (aR class) specifically for power semiconductors.

• Versatile Voltage Range: Reliable performance in both AC (690V) and DC (700V) environments.

• Standardized Form Factor: The 14x51 mm cylindrical design ensures easy integration into standard fuse holders.

• Global Compliance: UL recognized for DC applications, meeting international safety standards.

Function

The Siemens 3NC1440 SITOR Cylindrical Fuse Link functions as an essential safety device within electrical circuits. It is designed to quickly interrupt the circuit in case of an overload or short circuit, preventing damage to the electrical equipment. Its high breaking capacity ensures that it can handle large fault currents without compromising system safety.

Key Features

• Size: 14x51 mm

• Rated Current: 40 A

• Voltage Ratings:

  • Un AC: 690 V

  • Un DC: 700 V

• Type: aR (general purpose, fast-acting fuse link)

• Certification: UL Certified for safety

• Reliable Protection: Protects against overloads and short circuits in electrical circuits

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