ESS-1500-400A
1500VDC 400A high-current fuse for utility-scale energy storage with 100kA breaking capacity.
Product Overview
Description
The ESS-1500-400A is designed for large utility-scale battery energy storage systems requiring high current capability.
With 1500VDC rating and 400A continuous current, this fuse handles the largest commercial and utility BESS installations.
The 100kA breaking capacity provides ultimate protection for massive battery systems.
Product Series
ESS
Primary Application
Utility-scale battery energy storage
Key Features
- 1500VDC rating for utility-scale installations
- Ultra-high 400A current rating
- 100kA breaking capacity for massive battery systems
- Time-delay for large inverter inrush currents
- Heavy-duty M12 terminals for high-current connections
- Designed for continuous duty in harsh environments
Specifications
| Voltage Rating | 1500V DC |
|---|---|
| Current Rating | 400A |
| Breaking Capacity | 100kA @ 1500V DC |
| Size | Size 3 (76mm body) |
| Mounting | Bolt-on M12 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
Grid stabilization systems
Electronic system design
Large commercial solar+storage
Renewable energy systems
Industrial peak shaving
Industrial automation and control
Utility DC distribution
Electronic system design
FAE Expert Insights
"The ESS-1500-400A is our highest-rated energy storage fuse for the most demanding applications. I've specified this for 500MWh+ utility-scale projects where massive fault currents are a concern. The 400A rating handles the largest inverters (500kW+) while the 1500V rating supports modern high-voltage architectures. The Size 3 body provides excellent thermal performance for continuous high-current operation. This fuse is essential for utility projects where reliability and safety are paramount."
Highest-rated 1500V/400A fuse for utility-scale BESS applications
— Steven Wang, BeiLuo
Frequently Asked Questions
When do I need 400A vs 250A for utility-scale BESS?
Select 400A for: 1) Inverters >500kW; 2) Battery racks >2MWh; 3) Main DC bus protection; 4) Systems with parallel battery strings. Select 250A for: 1) Inverters 250-500kW; 2) Individual battery rack protection; 3) Branch circuit protection. Calculate: Max current = Total inverter power / DC voltage x 1.25. For 1MW at 1500V: 667A, so use multiple 400A fuses or higher rating.
Calculate total system current with 1.25x margin. Use multiple fuses for very large systems.