SIEMENS 3NA3140 Sicherung 500V AC 200A

SIEMENS 3NA3140 Fuse 500V AC 200A

Heavy-Duty Industrial NH Fuse for High-Power Electrical Systems

The SIEMENS 3NA3140 is a high-performance NH fuse designed for demanding industrial power distribution systems operating at up to 500V AC and 200A. It is used to protect electrical networks, machinery, and industrial installations from dangerous overloads and short-circuit conditions.

This fuse is a critical safety component in low-voltage industrial systems where high current loads require reliable interruption capability. It ensures safe disconnection of circuits during fault conditions, minimizing equipment damage and downtime.

Industrial Protection Function

The SIEMENS 3NA3140 is engineered to react quickly to electrical faults. When excessive current occurs, the fuse element melts and interrupts the circuit, preventing overheating and fire hazards. This makes it ideal for protecting expensive industrial equipment and infrastructure.

Main Features

• Original SIEMENS industrial fuse
• Model: 3NA3140
• Rated voltage: 500V AC
• Rated current: 200A
• High breaking capacity for industrial use
• Fast short-circuit response
• Reliable overload protection
• Stable performance under heavy load
• Durable ceramic housing
• Long service life in industrial environments

Applications

• Industrial power distribution systems
• Main electrical switchboards
• Transformer protection circuits
• Motor control centers
• Heavy machinery protection
• Energy distribution networks
• Factory electrical systems

Advantages

• High safety level in industrial installations
• Reliable interruption of fault currents
• Reduced risk of equipment damage
• Stable operation in demanding conditions
• SIEMENS certified industrial quality

This fuse is widely used by professional electricians, industrial maintenance teams, and automation engineers due to its proven reliability and performance.