Siemens 3NC2240 SITOR Cylindrical Fuse Link 22x58mm, 40A, 690V AC / 700V DC Original Brand New

Overview

The Siemens 3NC2240 SITOR cylindrical fuse is specifically engineered to protect sensitive power semiconductors—such as diodes, thyristors, and GTOs—from the damaging effects of short circuits. As part of the SITOR series, it offers ultra-fast-acting (aR) tripping characteristics, ensuring high-speed disconnection and superior protection for industrial power electronics.

Key Function

• High-Speed Interruption: Optimized for “aR” operational class to protect semiconductor components.

• Dual Voltage Rating: Reliable performance across 690V AC and 700V DC applications.

• Compact Design: The 22×58 mm dimensions allow for easy integration into standard fuse holders.

Benefit

• Enhanced Equipment Longevity: Prevents expensive semiconductor failure by reacting faster than standard fuses.

• International Standards: UL-recognized for DC applications, ensuring global compliance and safety.

• Versatility: Suitable for frequency converters, UPS systems, and soft starters.

Technical Specification

• Product Number: 3NC2240

• Fuse Type: SITOR Cylindrical Fuse Link

• Size: 22 x 58 mm

• Rated Current: 40 A

• Fuse Characteristic: aR (ultra-fast acting)

• Rated Voltage AC: 690 V

• Rated Voltage DC: 700 V

• DC Standard: According to UL

Application

• Power electronics systems

• Semiconductor protection

• Industrial drives and inverters

• Rectifiers and converters

• Automation and control panels

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