Siemens 3NA3365 gG Fuse-link, 500A 500VAC 250VDC, NH3 Size - Pack of 3

Siemens 3NA3365 gG Fuse-link, 500A 500VAC 250VDC

The Siemens 3NA3365 gG Fuse-link is a highly reliable and robust general-purpose fuse designed for comprehensive overcurrent and short-circuit protection in low-voltage electrical distribution systems. As a prominent component of the Siemens SENTRON series of NH fuse links, this NH3 size fuse offers full-range protection for cables, conductors, and general equipment against both sustained overloads and damaging short-circuit currents. Rated for 500VAC and 250VDC at 500A, it is an essential protective device for industrial, commercial, and utility applications, ensuring operational safety and minimizing downtime.

Key Features:

• General Purpose gG Characteristic: Provides full-range current protection, effectively safeguarding electrical installations from both excessive overload currents and high short-circuit currents.
• High Breaking Capacity: Engineered with a robust interrupting rating of 120kA at 500VAC and 80kA at 250VDC, capable of safely clearing high fault currents in demanding electrical environments.
• Dual Voltage Rating: Offers versatile protection for both AC networks up to 500V and DC networks up to 250V, accommodating a broad spectrum of power system configurations.
• NH3 Size Standard: Conforms to the DIN NH3 form factor, ensuring compatibility and seamless integration with standard NH fuse bases, fuse switch disconnectors, and associated busbar systems.
• Robust Construction: Features a high-quality ceramic body and meticulously silver-plated contact elements, guaranteeing superior thermal stability, mechanical strength, and excellent electrical conductivity for long-term reliability.
• Visual Status Indicator: Equipped with a top indicator that clearly displays the fuse status (blown or intact), facilitating quick troubleshooting and maintenance.

Detailed Technical Specifications:

Electrical Characteristics:

• Manufacturer: Siemens
• Series: SENTRON (NH Fuse-links)
• Item Number: 3NA3365
• Catalogue Number: 3NA3365
• Rated Current (IN): 500A
• Rated Voltage (VAC IEC): 500V AC
• Rated Voltage (VDC IEC): 250V DC
• Fuse Characteristic: gG (General Purpose, Full-Range Breaking Capacity)
• Breaking Capacity (Interrupting Rating):
  • 120kA @ 500V AC
  • 80kA @ 250V DC
• Rated Power Loss (at rated current): Approx. 46W
• Operating Temperature Range: -5°C to +40°C (typical for fuse systems)
• Indicator: Top-mounted combined indicator

Mechanical Specifications:

• Body Material: Ceramic
• Contact Elements: Silver-plated
• Form Factor: DIN NH Fuse-link
• Size: NH3 (according to VDE 0636-1 and IEC 60269-1)
• Mounting: Designed for standard NH fuse bases/holders (e.g., 3NH3 series)

Standards & Compliance:

• International Standards: IEC 60269-1 (Low-voltage fuses - Part 1: General requirements), VDE 0636-1
• Certification: RoHS Compliant

Applications:

The Siemens 3NA3365 gG Fuse-link is a versatile and essential protective device for a wide range of general-purpose electrical applications across various sectors, including:

• Industrial main distribution boards and sub-distribution panels.
• Commercial building electrical infrastructure, including lighting, power outlets, and HVAC systems.
• Protection of cables, conductors, and general equipment in factories, workshops, and utilities.
• Motor protection where coordinated protection with motor circuit breakers is required.
• Transformer and capacitor bank protection.
• Any application requiring reliable overcurrent and short-circuit protection in AC or DC circuits.

This product is supplied as a pack of 3 units.