Siemens SITOR 3NE3334-0B aR Fuse-link, 500A 1000VAC 1000VDC, NH0 Size - Pack of 3

Siemens SITOR 3NE3334-0B aR Fuse-link, 500A 1000VAC 1000VDC

The Siemens SITOR 3NE3334-0B aR Fuse-link is a high-performance, ultra-rapid fuse specifically engineered for the reliable protection of power semiconductors. As part of the renowned Siemens SITOR series, this NH0 size fuse offers fast-acting current limitation and exceptional switching capabilities, safeguarding sensitive components such as rectifiers, inverters, and motor starters from dangerous short-circuit currents. Rated for both 1000VAC and 1000VDC at 500A, it prevents cascading failures and minimizes downtime in critical industrial applications by clearing faults with extreme speed and precision.

Key Features:

• Ultra-Rapid (aR) Characteristic: Specifically designed for the protection of power semiconductors, offering extremely fast response times to limit fault currents and prevent damage.
• High Breaking Capacity: Delivers a formidable interrupting rating of 200kA at 1000VAC and 100kA at 1000VDC, capable of safely clearing high fault currents in demanding industrial environments.
• Dual Voltage Versatility: Rated for 1000V AC and 1000V DC, providing comprehensive protection across a wide range of industrial power electronics and DC applications.
• NH0 Size Standard: Conforms to the DIN NH0 form factor, ensuring compatibility with standard NH fuse bases and holders, facilitating easy integration and replacement.
• Robust SITOR Construction: Manufactured with a ceramic body and silver-plated contact elements, guaranteeing superior thermal stability, mechanical strength, and excellent electrical conductivity for prolonged operational life.
• Maximum System Availability: By protecting expensive power semiconductors against overcurrents and short-circuits, these fuses contribute to extended equipment lifetime and reduced maintenance costs.

Detailed Technical Specifications:

Electrical Characteristics:

• Manufacturer: Siemens
• Series: SITOR
• Item Number: 3NE3334-0B
• Catalogue Number: 3NE3334-0B
• Rated Current (IN): 500A
• Rated Voltage (VAC IEC): 1000V AC
• Rated Voltage (VDC IEC): 1000V DC
• Fuse Characteristic: aR (Ultra-Rapid, Semiconductor Protection)
• Breaking Capacity (Interrupting Rating):
  • 200kA @ 1000V AC (cos φ = 0.2)
  • 100kA @ 1000V DC (L/R = 15 ms)
• Rated Power Loss (at rated current): Approx. 130W
• Operating Temperature Range: -20°C to +50°C (typical for industrial applications)

Mechanical Specifications:

• Body Material: Ceramic
• Contact Elements: Silver-plated
• Form Factor: DIN NH Fuse-link
• Size: NH0 (according to VDE 0636-4 and IEC 60269-4)
• Mounting: Designed for standard NH fuse bases/holders with appropriate contact systems.

Standards & Compliance:

• International Standards: IEC 60269-4 (Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices), VDE 0636-4
• Certification: RoHS Compliant

Applications:

The Siemens SITOR 3NE3334-0B aR Fuse-link is an indispensable protective component for critical industrial power electronics applications, including:

• Uninterruptible Power Supplies (UPS) Systems: Protecting inverters and rectifiers.
• Variable Frequency Drives (VFDs) / Motor Drives: Safeguarding power electronic converters.
• Soft Starters: Protecting semiconductor switches during motor start-up.
• Static Converters and Rectifiers: Ensuring fault isolation for DC power supplies.
• DC Traction Systems: Protection in railway traction power systems and battery-powered vehicles.
• Welding Equipment: Protecting sensitive power regulation components.
• Industrial Heating Systems: Safeguarding power controllers.
• Power Semiconductor Protection: Essential for thyristors, diodes, IGBTs, and other power semiconductor devices.

This product is supplied as a pack of 3 units.