Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh)

Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh) 

SKU: SigenCube ES261-2H-AU

The Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh) (SKU:SigenCube ES261-2H-AU) is an all-in-one commercial and industrial battery energy storage system (C&I BESS) engineered for streamlined deployment, compact footprint, and powerful on-demand energy management. Integrating the Power Conversion System (PCS), high-voltage control components, and power distribution into a single factory-assembled enclosure, it delivers 125 kW nominal AC output power paired with 261 kWh total LiFePO4 battery capacity at a 2-hour (0.5P) discharge rate. Featuring smart predictive liquid cooling, 150 percent surge overload capability, built-in EMS paralleling up to 100 units, and multi-tier fire suppression, the SigenCube ES261-2H-AU provides reliable peak shaving, seamless backup, and grid support across diverse commercial installations.

Key Features: Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh)

• All-in-One Compact Architecture: Unifies the PCS, high-voltage box, and distribution assembly into a single cabinet platform, saving significant installation space compared to traditional modular setups.
  
• High Output & 2-Hour Storage Profile: Provides 125 kW nominal AC output power (125 kVA max apparent power) and 261 kWh total LFP battery storage operating at a 0.5P rate for responsive commercial peak shaving.
  
• Superior 150 Percent Overload Capability: Delivers a peak apparent power output of 187,500 VA for 10 seconds to reliably start heavy inductive loads such as commercial air compressors, conveyor drives, and centrifugal pumps.
  
• Built-in EMS & Massive Scalability: Connects up to 100 units in parallel without requiring an external data logger, backed by automated failover where any cabinet can dynamically assume primary control.
  
• Smart AI Thermal Management: Utilizes predictive liquid cooling that responds ahead of load shifts, reducing auxiliary power consumption by 20 percent, extending coolant lifespan to 10 years, and mitigating cell calendar aging.
  
• Pack-Level Active Balancing: Features 7A active balancing current to maximize usable capacity across all cells without needing manual on-site state-of-charge calibration.
  
• Seamless Backup & Grid Support: Achieves a 0 ms transfer time when paired with a Sigen Energy Gateway, providing uninterruptible power alongside MWh-level black start and grid ancillary service capabilities.
  
• Multi-Stage Fire & Environmental Protection: Certified to IP55 and C4-M anti-corrosion ratings, featuring a top explosion vent, cabinet-level aerosol suppression, water-based firefighting interface, smoke/gas/heat detectors, and eight layers of overcurrent protection.
  
• Low-Noise Operation: Emits operational noise levels of less than or equal to 60 dB, allowing flexible positioning close to commercial facilities and boundary lines.
  

Basic Specs: Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh)

• Product Model: SigenCube ES261-2H-AU
  
• Battery Chemistry: Lithium Iron Phosphate (LiFePO4)
  
• Total Energy Capacity: 261 kWh
  
• DC Nominal Voltage Range: 676 V to 936 V
  
• Nominal Charge / Discharge Rate: 0.5P
  
• Nominal AC Output Power (On-Grid): 125,000 W (125 kW)
  
• Max Output Apparent Power (On-Grid): 125,000 VA
  
• Peak Output Apparent Power (Backup, 10s): 187,500 VA
  
• Nominal AC Voltage & Grid Type: 400 V, 3-Phase 4-Wire (3P4W)
  
• Nominal Grid Frequency: 50 Hz / 60 Hz
  
• Dimensions (W x H x D): 940 x 2380 x 1326 mm
  
• Cabinet Weight: 1500 kg
  
• Ingress & Anti-Corrosion Protection: IP55 / C4-M
  
• Operating Ambient Temperature Range: -30 to 55 degrees C (Derating begins at 45 degrees C)
  
• Cooling Method: Smart Liquid Cooling
  
• Operational Noise: less than or equal to 60 dB
  
• Communication Ports & Protocols: WLAN, Fast Ethernet, RS485 / Modbus TCP, IEC 61850

What’s Included: Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh)

• Sigenergy SigenCube C&I BESS Cabinet (Model: SigenCube ES261-2H-AU)
  
• Integrated 261 kWh LiFePO4 Battery Assembly with Liquid Cooling Manifold
  
• Factory-Fitted 125 kW Power Conversion System (PCS) and HV Control Box
  
• Internal AC Power Distribution Assembly and Built-in EMS Controller
  
• Integrated Fire Suppression & Safety Protection Suite (Top explosion vent, smoke, heat, and gas detectors, aerosol extinguisher, and water connection interface)
  
• Mounting Brackets and Commissioning Documentation
  

Why Choose AC Solar Warehouse for Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh)?

When sourcing the Sigenergy - SigenCube C&I BESS Cabinet (125kW/261kWh) through AC Solar Warehouse, you benefit from industry-leading commercial solar and energy storage expertise, guaranteed authentic equipment, and dedicated technical service. AC Solar Warehouse offers end-to-end support for commercial installers—from pre-sale system design, SLD review, and grid connection compliance to on-site commissioning guidance. With established logistics infrastructure and dedicated engineering support, AC Solar Warehouse ensures your commercial BESS projects are delivered smoothly and backed by trusted industry professionals.