Siemens 3NE3337-8

Overview

The Siemens 3NE3337-8 SITOR Semiconductor Protection Fuse Link is an essential component for safeguarding sensitive electrical systems. Part of the renowned Siemens SENTRON LV HRC family, this robust NH2 aR class fuse is meticulously engineered to provide exceptionally fast-acting and highly reliable protection for critical semiconductors and diverse industrial power applications. With its impressive ratings of 710 A and 900 V AC, it effectively handles high current and voltage demands, preventing costly damage from overcurrents and short circuits. The innovative design includes silver-plated slotted blade contacts, meticulously crafted for M10 screw fixing and a standard 110 mm mounting dimension, ensuring not only secure installation but also superior conductivity and minimal contact resistance. A crucial integrated front-mounted indicator offers immediate visual confirmation of the fuse's status, significantly streamlining maintenance procedures and ultimately minimizing system downtime. This fuse link embodies Siemens' commitment to quality, performance, and operational efficiency in industrial electrical protection.

Key Features

• High-Performance Protection: Specifically designed as an aR class SITOR fuse link, offering ultra-fast semiconductor protection.
• Robust Electrical Ratings: Rated for 710 A current and 900 V AC voltage, suitable for demanding industrial environments.
• Durable NH2 Design: Features an LV HRC NH2 fuse size, conforming to EN 60269-1 standards for reliable operation.
• Secure & Efficient Contacts: Equipped with silver-plated slotted blade contacts for M10 screw fixing (110 mm mounting dimension), ensuring low resistance and secure connection.
• Instant Status Indication: Front-mounted indicator provides quick and clear visual feedback on the fuse status, enhancing safety and maintenance efficiency.
• High Breaking Capacity: Offers a breaking capacity of 100 kA (IEC 60947-2), capable of interrupting large fault currents.
• Optimized Power Loss: Engineered for efficiency with a power loss of only 105 W at rated current.

Technical Specifications

The Siemens 3NE3337-8 is a high-quality SITOR fuse link with precision-engineered specifications:

• Manufacturer: Siemens SENTRON
• Article Number: 3NE3337-8
• Product Family: LV HRC Design – SITOR Fuse Links
• Rated Current: 710 A
• Rated Voltage: 900 V AC
• Fuse Class: aR (semiconductor protection)
• Breaking Capacity: 100 kA (per IEC 60947-2)
• Power Loss: 105 W (at rated current)
• Dimensions: Mounting dimension 110 mm
• Net Weight: 793 g
• Contacts: Slotted blade, silver-plated
• Installation: Designed for M10 screw fixing or compatible LV HRC fuse bases/switch disconnecters
• Ambient Temperature Range: –20 °C to +50 °C (up to 95% RH)
• Compliance: IEC 60269-1, IEC 60947-2, RoHS

Applications

The Siemens 3NE3337-8 SITOR fuse link is ideally suited for a broad range of critical industrial applications:

• Semiconductor Device Protection: Essential for safeguarding high-value power semiconductors such as diodes, thyristors, and IGBTs.
• Power Converters and Rectifiers: Ensures reliable operation and protection within AC/DC and DC/DC converter systems.
• Inverter and Drive Systems: Critically protects components in variable frequency drives and motor control applications.
• DC Link Circuits: Provides rapid circuit interruption in DC link applications to prevent cascading failures.
• Industrial Automation: Enhances the safety and integrity of control systems and automated machinery.
• Renewable Energy Systems: Crucial for protecting equipment in solar inverters, wind turbine converters, and energy storage systems.

Why Choose This Model?

• Unmatched Reliability: As a Siemens SENTRON product, the 3NE3337-8 guarantees exceptional reliability and consistent performance in demanding conditions.
• Superior Semiconductor Safeguard: Its aR class rating provides ultra-fast response, specifically designed for the sensitive requirements of semiconductor protection, minimizing damage and downtime.
• Optimized Conductivity & Longevity: Silver-plated contacts reduce contact resistance, ensuring efficient power transfer and extended operational life.
• Simplified Maintenance: The integrated front-mounted indicator allows for quick and effortless status checks, significantly reducing diagnostic time and improving system readiness.
• Global Compliance & Quality: Manufactured to stringent international standards (IEC 60269-1, IEC 60947-2, RoHS), offering peace of mind and broad compatibility.
• Versatile & Easy Installation: Designed for M10 screw fixing, offering flexibility and ease of integration into existing or new LV HRC fuse bases and switch disconnecters.

Order Now

Equip your critical power systems with the superior protection of the Siemens 3NE3337-8 SITOR NH2 semiconductor protection fuse link. This high-performance component is readily available and ready to ship worldwide, ensuring your operations remain safe, efficient, and continuously protected. Contact us today to secure this essential electrical safeguard for your industrial applications.