Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh)

Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh) 

SKU: SigenCube ES401-4H-AU

The Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh) (SKU: SigenCube ES401-4H-AU) is an all-in-one commercial and industrial battery energy storage system (C&I BESS) configured for 4-hour high-capacity energy shifting, peak shaving, and resilient power backup. Integrating the Power Conversion System (PCS), high-voltage control equipment, and AC distribution into a single space-saving enclosure, it delivers 99.99 kW nominal AC output power paired with 401 kWh total LFP battery storage. Equipped with smart AI-driven predictive liquid cooling, 150 percent surge overload capability, built-in EMS paralleling up to 100 units, and multi-tier fire suppression, the SigenCube ES401-4H-AU delivers maximum project returns with minimal site complexity.

Key Features: Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh)

• All-in-One Compact Architecture: Unifies the PCS, HV control box, and power distribution into a single platform, achieving 220.9 kWh per square metre energy density and reducing required site footprint by more than 30 percent.

• Long-Duration Energy Optimization: Combines 99.99 kW nominal AC output power with 401 kWh total LiFePO4 battery capacity for 4-hour energy arbitrage and demand charge reduction.

• Robust 150 Percent Overload Support: Delivers a 10-second peak apparent power surge of 149,985 VA to effortlessly start inductive industrial loads like pumps, drive systems, and compressors.

• Built-in EMS & Massive Scalability: Allows up to 100 units in parallel without an external data logger, featuring automated failover where any cabinet can dynamically assume system control.

• Smart Predictive Liquid Cooling: AI thermal management forecasts operating profiles and day-ahead electricity prices, cutting auxiliary power use by 20 percent, extending coolant life to 10 years, and mitigating cell calendar aging.

• Pack-Level Active Balancing: Integrated 7A active cell balancing maximizes usable energy across all packs without requiring manual on-site state-of-charge calibration.

• Seamless Backup & Grid Ancillary Support: Delivers a 0 ms transfer time when paired with a Sigen Energy Gateway, enabling continuous uninterruptible backup along with MWh-level black start capability.

• Comprehensive Multi-Tier Safety Suite: Certified to IP55 and C4-M anti-corrosion ratings, incorporating a top explosion vent, water-based firefighting interface, cabinet-level aerosol suppression, smoke/gas/heat detectors, and eight layers of overcurrent protection.

• Low Acoustic Emission: Quiet operation below 60 dB makes it easy to position close to commercial buildings without acoustic disruption.

Basic Specs: Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh)

• Product Model: SigenCube ES401-4H-AU

• Battery Chemistry: Lithium Iron Phosphate (LiFePO4)

• Total Energy Capacity: 401 kWh

• DC Nominal Voltage Range: 896 V to 1152 V

• Nominal Charge / Discharge Rate: 0.25P

• Nominal AC Output Power (On-Grid): 99,990 W (99.99 kW)

• Max Output Apparent Power (On-Grid): 99,990 VA

• Peak Output Apparent Power (Backup, 10s): 149,985 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): 1100 x 2450 x 1850 mm

• Cabinet Weight: 4000 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 (99.99kW/401kWh)

• Sigenergy SigenCube C&I BESS Cabinet (Model: SigenCube ES401-4H-AU)

• Integrated 401 kWh LiFePO4 Battery Assembly with Liquid Cooling Manifold

• Factory-Fitted 99.99 kW Power Conversion System (PCS) and HV Control Box

• Internal AC Power Distribution Unit and Built-in EMS Control Module

• Integrated Fire Suppression & Safety Hardware (Top explosion vent, smoke, heat, and gas detectors, aerosol fire suppression, and water pipe interface)

• Mounting Brackets and Commissioning Documentation

Why Choose AC Solar Warehouse for Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh)?

When sourcing the Sigenergy - SigenCube C&I BESS Cabinet (99.99kW/401kWh) 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.