When a steel plant in Germany experienced repeated downtime due to motor control center failures, engineers discovered the root cause wasn’t complex automation systems – it was inadequate circuit protection. Enter the Bussmann 200NHG1B-690 fuse, a game-changer in industrial power management.
Where 690V Meets Real-World Challenges
Designed for 690VAC systems with 200A ratings, this NH-style fuse isn’t just another component. Its 120kA breaking capacity at 690V makes it the heavyweight champion in:
- Mining conveyor systems (operating 24/7 under dust overload)
- Wind turbine converters (surviving -40°C to +85°C swings)
- EV charging stations (handling 500+ daily charge cycles)
Case Study: Solar Farm Savior
When a 50MW solar plant in Arizona faced 12% annual production loss from inverter faults, replacing standard fuses with 200NHG1B-690 units reduced downtime by 78%. Maintenance supervisor John Carter noted: ‘We went from weekly fuse replacements to quarterly checks – the ceramic sand filler really makes a difference in arc suppression.’
By the Numbers
| Parameter | Value | Industry Average |
|---|---|---|
| Time-Current Performance | 10x In at 0.01s | 6x In at 0.01s |
| Energy Let-Through (I²t) | 0.08 MA²s | 0.15 MA²s |
With UL/CSA/IEC certifications, this fuse doesn’t just meet standards – it’s redefining them. Next time your system trips, ask: Is your protection keeping up with your power needs?
