Siemens SITOR 3NE3338-8 aR Fuse, 800A 1000VAC, Ultrafast Semiconductor Protection, NH Size 3 - Pack of 3

Siemens SITOR 3NE3338-8 aR Fuse, 800A 1000VAC

The Siemens SITOR 3NE3338-8 aR Ultrafast Fuse Link is an advanced protective device meticulously engineered for the robust and rapid safeguarding of power semiconductors in high-demanding industrial applications. As a distinguished member of the SITOR series, this NH Size 3 fuse delivers exceptional reliability and lightning-fast fault clearing, effectively preventing catastrophic damage to critical power electronics such as diodes, thyristors, and IGBTs. Constructed with a durable ceramic body and high-quality silver-plated contact blades, it ensures consistent, highly efficient, and safe operation within AC circuits up to 1000V, thereby maximizing system uptime and minimizing maintenance expenditures.

Key Features:

• Ultrafast aR Characteristic: Precisely designed for the partial-range protection of power semiconductors, offering instantaneous interruption of severe overcurrents and short-circuit conditions.
• Very High Breaking Capacity: Provides superior system safety with an impressive breaking capacity of 200kA at 1000VAC.
• Optimized Low I²t Values: Features an extremely low melting integral (I²t), which rigorously limits the energy let-through during a short circuit event, offering unparalleled protection for sensitive semiconductor devices.
• Enhanced Power Dissipation: Engineered for high efficiency, presenting a rated power loss of 130W at nominal current, which contributes to optimized thermal management and operational energy savings.
• Robust NH Size 3 Construction: Comprises a premium ceramic body and robust silver-plated contact blades, ensuring superior mechanical strength, excellent insulation properties, and reliable electrical contact throughout its operational lifespan.
• Compliance with International Standards: Fully conforms to IEC 60269-4, the specific standard for fuses dedicated to the protection of semiconductor devices.
• Diverse Application Capability: Suitable for a broad spectrum of high-power industrial electronic systems that require stringent and rapid semiconductor protection.

Detailed Technical Specifications:

Electrical Characteristics:

• Manufacturer: Siemens
• Series: SITOR
• Part Number: 3NE3338-8
• Rated Current (IN): 800A
• 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: 45000 A²s (typical for 0 -> Ip at rated voltage)
• Rated Power Loss (at rated current): 130W
• Operating Temperature Range: -20°C to +50°C (for the fuse under typical operating conditions)

Mechanical Specifications:

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

Standards & Compliance:

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

Applications:

The Siemens SITOR 3NE3338-8 aR Fuse Link is an essential protective component for high-power semiconductor-based systems across a diverse array of industrial and commercial applications, including:

• Advanced power converters, inverters, and high-current rectifiers
• Industrial motor control drives (VFDs) and sophisticated soft starters
• Uninterruptible Power Supplies (UPS) for mission-critical infrastructure and large data centers
• Frequency converters in heavy manufacturing and process industries
• Specialized high-power industrial welding equipment and electrochemical processes
• Large-scale renewable energy installations, such as utility-scale solar inverters and advanced wind turbine converters
• Any system where the rapid, precise, and highly reliable protection of power semiconductor components from destructive overcurrents is paramount.

This product is supplied as a pack of 3 units.