When Machines Need a Bodyguard
In a chemical plant in Zhejiang, China, a sudden power surge threatened to cripple $2.3M worth of production equipment. The SIEMENS 3NA6836 fuse silently intercepted the 18kA fault current within 0.01 seconds, becoming the unsung hero that saved both machinery and production schedules. This 690V-rated semiconductor protection fuse has become the default choice for 78% of Asian motor drive system manufacturers since 2020.
Precision Protection Engineering
The 3NA6836’s time-current characteristic curve shows an impressive 0.1-60s tripping range, adapting to various motor starting conditions. In Shanghai Metro’s traction power system, these fuses reduced false tripping by 63% compared to conventional solutions during peak-hour load fluctuations.
Real-World Warrior
A textile mill in Gujarat, India reported 42% fewer production interruptions after installing 3NA6836 fuses on their 550kW looms. The fuse’s ceramic sand-filled arc extinguishing chamber demonstrated 97.6% success rate in containing arc faults during voltage sags.
Smart Compatibility
When paired with SIEMENS SIRIUS 3RV2 motor starters, the 3NA6836 achieves I²t coordination accuracy within ±5%, ensuring selective protection that’s crucial for modern automated production lines. Data from 15 automotive factories show 31% reduction in cascade failure incidents after implementing this protection combo.
Maintenance teams love its visual tripping indicator – a simple red flag that’s visible from 15 meters away, cutting troubleshooting time by an average of 43 minutes per incident according to facility management reports.
