Siemens SITOR Fuse link with blade contacts, front indicator, NH0, 80A, 1000V, 440V Part number 3NE4120

Product Overview

The Siemens SENTRON 3NE4120 is a SITOR NH fuse link (size NH00) designed for reliable protection of semiconductor devices and low-voltage circuits. It is rated for 80 A and supports up to 1000 V AC and 440 V DC. This high-breaking-capacity fuse ensures safe disconnection during overload and short-circuit conditions. Built for durability and precision, it is ideal for industrial and power distribution systems requiring compact, high-performance overcurrent protection.

Key Features

• Rated Current: 80 A
• Rated Operating Voltage: 1000 V AC / 440 V DC
• High Breaking Capacity: Ensures safe fault interruption
• Fuse Type: NH00, SITOR aR for semiconductor protection
• Design: Compact blade-contact for easy installation
• Power Loss: Approximately 22 W at rated current
• Mounting: Suitable for horizontal or vertical installation
• Durability: Built for high mechanical and thermal stress environments

Technical Specifications

• Product Series: SENTRON SITOR Fuse Systems
• Article Number: 3NE4120
• Fuse Size: NH00
• Operating Class: aR (partial-range fuse for semiconductor protection)
• Rated Current: 80 A
• Rated Voltage (AC/DC): 1000 V AC / 440 V DC
• Breaking Capacity: 100 kA
• Power Loss: 22 W
• Mounting Orientation: Any (horizontal or vertical)
• Operating Temperature Range: −20 °C to +50 °C
• Weight: Approx. 270 g
• Housing Material: Ceramic body with copper alloy blades
• Protection Type: High-speed fuse for semiconductor circuits

Compliance & Certifications

• Complies with IEC 60269-1 and IEC 60269-4 standards
• CE Marked for EU Low Voltage and Machinery Directives
• RoHS Compliant – Free from restricted hazardous substances
• Manufactured under ISO 9001 certified quality management

Applications

The Siemens 3NE4120 fuse link is designed for semiconductor protection and low-voltage power distribution systems. It is ideal for use in rectifiers, inverters, motor drives, UPS systems, and industrial switchboards. Its robust design ensures high reliability and precise performance in demanding industrial environments.