Siemens SITOR 3NE3336 aR Fuse, 630A 1000VAC, Ultrafast Semiconductor Protection, NH Size 3 - Pack of 3

Siemens SITOR 3NE3336 aR Fuse, 630A 1000VAC

The Siemens SITOR 3NE3336 aR Ultrafast Fuse Link is a high-performance protective device meticulously designed for the advanced safeguarding of power semiconductors in demanding industrial environments. As a key component of the esteemed SITOR series, this NH Size 3 fuse delivers exceptional reliability and lightning-fast fault clearing to prevent catastrophic damage to critical power electronics such as diodes, thyristors, and IGBTs. With its robust ceramic construction and silver-plated contact blades, it guarantees stable, efficient, and safe operation in AC circuits up to 1000V, minimizing downtime and maintenance costs.

Key Features:

• Ultrafast aR Characteristic: Engineered specifically for the partial-range protection of power semiconductors, providing instantaneous interruption of extreme overcurrents.
• Very High Breaking Capacity: Offers superior system safety with an impressive breaking capacity of 200kA at 1000VAC.
• Optimized Low I²t Values: Features an extremely low melting integral (I²t), which significantly limits the energy let-through during a short circuit, thus offering unparalleled protection for sensitive semiconductor devices.
• Minimal Power Loss: Designed for high efficiency, resulting in reduced power dissipation (105W at rated current) and contributing to cooler operation and energy savings.
• Durable NH Size 3 Construction: Comprises a high-quality ceramic body and robust silver-plated contact blades, ensuring mechanical strength, excellent insulation, and reliable electrical contact over its operational lifespan.
• Adherence to International Standards: Conforms to IEC 60269-4, the standard for fuses that protect semiconductor devices.
• Versatile Application: Suitable for a wide array of high-power industrial electronic systems requiring stringent semiconductor protection.

Detailed Technical Specifications:

Electrical Characteristics:

• Manufacturer: Siemens
• Series: SITOR
• Part Number: 3NE3336
• Rated Current (IN): 630A
• Rated Voltage (VAC): 1000V AC
• Fuse Characteristic: aR (Ultrafast, Partial Range Breaking Capacity for Semiconductor Protection)
• Breaking Capacity (Interrupting Rating): 200kA @ 1000VAC
• Melting Integral (I²t) @ 1000V: 23200 A²s (typical for 0 -> Ip at rated voltage)
• Rated Power Loss (at rated current): 105W
• Operating Temperature Range: -20°C to +50°C (operational, typically higher for storage)

Mechanical Specifications:

• Body Material: Ceramic
• Contact Blades: Silver-plated
• Form Factor: NH Fuse Link
• Size: NH Size 3 (Standardized dimensions for NH fuse systems according to DIN 43620)
• Mounting: Designed for standard NH fuse bases/holders (e.g., Siemens 3KL/3KF series for NH Size 3)

Standards & Compliance:

• International Standards: IEC 60269-1, IEC 60269-4 (Fuses for the protection of power semiconductors)
• Certification: RoHS Compliant

Applications:

The Siemens SITOR 3NE3336 aR Fuse Link is an indispensable protective solution for high-power semiconductor-based systems across various industrial sectors, including:

• High-power rectifiers and power converters
• Industrial motor control systems, including variable frequency drives (VFDs) and soft starters
• Uninterruptible Power Supplies (UPS) for critical infrastructure
• Frequency converters and inverters in heavy industry
• Specialized welding equipment and electrolytic processes
• Large-scale renewable energy systems, such as wind power and utility-scale solar inverters
• Any application where rapid and precise protection of power semiconductors from overcurrents is paramount.

This product is supplied as a pack of 3 units.