ESS-1500-250A
1500VDC 250A fuse for utility-scale energy storage systems with 100kA breaking capacity.
Product Overview
Description
The ESS-1500-250A is designed for large-scale battery energy storage systems operating at 1500VDC.
This fuse provides reliable protection for inverters, battery racks, and DC distribution equipment.
The 100kA breaking capacity ensures safe interruption of severe battery fault currents.
Product Series
ESS
Primary Application
Utility-scale battery energy storage
Key Features
- 1500VDC rating for utility-scale solar and storage
- 100kA breaking capacity for large battery systems
- Time-delay characteristic for inverter inrush
- Bolt-on terminals for secure mounting
- UL and IEC recognized for global projects
- Designed for 100% continuous duty
Specifications
| Voltage Rating | 1500V DC |
|---|---|
| Current Rating | 250A |
| Breaking Capacity | 100kA @ 1500V DC |
| Size | Size 2 (64mm body) |
| Mounting | Bolt-on M10 terminals |
| Operating Temperature | -40°C to +85°C |
| Time-Current | Time-delay |
| Standards | UL 248-13, IEC 60269-7 |
Applications
Utility-scale battery energy storage
Battery and charging management
Large commercial solar+storage systems
Renewable energy systems
1500VDC solar inverter protection
Renewable energy systems
Grid-scale DC distribution
Electronic system design
Industrial microgrids
Industrial automation and control
FAE Expert Insights
"I've worked on numerous utility-scale BESS projects, and the ESS-1500 series has become my go-to recommendation. The 1500V rating is essential for modern large-scale solar and storage installations where higher voltages reduce DC cabling costs. The time-delay characteristic is crucial - I've seen standard fast-acting fuses nuisance-blow during inverter startup when capacitors charge. The 100kA breaking capacity handles the massive fault currents from large lithium-ion battery racks. One important consideration is coordination with DC breakers - the fuse should act as backup protection for faults beyond the breaker's capacity. Always perform a coordination study for large systems."
Ideal for utility-scale BESS with 1500V rating and time-delay for inverter protection
— Steven Wang, BeiLuo
Frequently Asked Questions
How do I coordinate this fuse with DC breakers in BESS applications?
Fuse and DC breaker coordination in BESS: 1) The DC breaker handles normal overloads and switching; 2) The fuse provides backup protection for high fault currents beyond breaker rating; 3) Breaker instantaneous trip should be below fuse melting current for overloads; 4) Fuse should operate faster than breaker for short-circuits above breaker capacity; 5) Typical coordination: 250A fuse with 200A breaker provides good separation. Perform time-current curve analysis to verify coordination. The fuse acts as ultimate protection if breaker fails or for catastrophic faults.
Size breaker at 80% of fuse rating. Perform coordination study with actual curves.