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Home > products > high voltage BMS(HV BMS) > GCE 2U 120S 384V 50A RBMS High-Voltage Battery Management System | 350V/500V, 50A, 3.5" HMI, CAN/RS485/Ethernet, Parallel up to 8 Units, for ESS & UPS

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GCE 2U 120S 384V 50A RBMS High-Voltage Battery Management System | 350V/500V, 50A, 3.5" HMI, CAN/RS485/Ethernet, Parallel up to 8 Units, for ESS & UPS

Name: GCE 2U 120S 384V 50A RBMS High-Voltage Battery Management System | 350V/500V, 50A, 3.5" HMI, CAN/RS485/Ethernet, Parallel up to 8 Units, for ESS & UPS
Brand: Hunan GCE Technology Co.,Ltd
SKU: RBMS-S23-50A-500
Price: 100000000 USD
Availability: InStock

Product Details

Place of Origin: china

Brand Name: GCE

Certification: CE

Model Number: RBMS-S23-50A-500

Payment & Shipping Terms

Minimum Order Quantity: 2 units

Price: Consult with cara@hngce.com

Packaging Details: Cardboard box foam packaging

Delivery Time: 25 workdays

Payment Terms: L/C, T/T

Supply Ability: 1000 units per month

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Product Details

Product Description

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                                                                                                                                                                                                                                                                                                                                    high voltage BMS with 350V/500V, 50A battery management system for ESS, parallel BMS with CAN/RS485/Ethernet
                      

Product Name:	Battery Management System BMS	Communication:	RS485/CAN/LAN
Suitable Battery Type:	LFP/NMC/LTO	Certification:	CE
Warranty:	3 Years	Capacity:	50Ah/100Ah/200Ah/280Ah/314Ah/any Capacity
Weight:	12kg	Size:	48289500mm
Balancing Tech:	Active Balance/passive Balance (optional)	Design:	Master And Slave Bms
Voltage Range:	120-500V	Rated Current:	50A

Product Name:	Battery Management System BMS
Communication:	RS485/CAN/LAN
Suitable Battery Type:	LFP/NMC/LTO
Certification:	CE
Warranty:	3 Years
Capacity:	50Ah/100Ah/200Ah/280Ah/314Ah/any Capacity
Weight:	12kg
Size:	48289500mm
Balancing Tech:	Active Balance/passive Balance (optional)
Design:	Master And Slave Bms
Voltage Range:	120-500V
Rated Current:	50A

GCE 2U 120S 384V 50A RBMS High-Voltage Battery Management System | 350V/500V, 50A, 3.5" HMI, CAN/RS485/Ethernet, Parallel up to 8 Units, for ESS & UPS

GCE 2U 120S 384V 50A RBMS High-Voltage Battery Management System

Model: RBMS-D23-50A-350 (240V) / RBMS-D23-50A-500 (240V)

Brand: GCE | Type: Rack Battery Management System (RBMS)

Application: Large-scale high-voltage battery energy storage systems (ESS), UPS, PV plants, micro-grids, industrial & commercial energy storage

Product Overview

The GCE 2U RBMS is a modular, distributed battery management system designed for high-voltage battery energy storage and UPS applications. It supports a three-level architecture (BMU + RBMS + SBMS) for multi-cluster parallel systems, making it suitable for projects ranging from 10kWh to 100kWh in stand-alone mode, and 50kWh to 2MWh+ in parallel mode.

With a 19-inch rack-mount 2U design, the RBMS integrates protection, switching, current/voltage detection, and communication functions. It provides reliable charge/discharge management, temperature monitoring, and multiple communication interfaces for seamless integration with PCS, inverters, UPS, and third-party EMS.

Key Features

Advanced Battery Management - Highly integrated system with seamless monitoring and self-inspection
Modular & Scalable - Supports up to 136 battery modules in series; up to 8 16S 51.2V slave units
Comprehensive Protection - Short circuit protection (500V 6KA 20ms), pre-charge function, parallel circulation control
Rich Communication Interfaces - CAN, RS485, Ethernet, dry contact I/O; compatible with most PCS/UPS and monitoring servers
Flexible Protocol - Factory protocol included; customizable for different PCS manufacturers
Large Data Storage - Built-in high-capacity memory chip; SD card support for historical cell data
HMI Display - 3.5-inch embedded touch screen for clear system status at a glance
Automatic Parallel/Offline Control - Easy parallel connection of battery packs
IAP Upgrade - Remote firmware upgrade available
Event Recording - Stores up to 5000 events

Technical Specifications

Parameter	Details
Rated Current	50A
Max. Voltage	350V / 500V (depending on model)
Power Consumption	≤15W (three-wire / center tap)
Current Sampling Accuracy	1% FSR
Insulation Withstand Voltage	2800VDC <1mA 1min
Protection Level	IP20
Dimensions (W×H×D)	482 × 89 × 500 mm
Net Weight	~10 kg
Installation	Standard 19-inch rack
Cooling	Natural convection
Operating Temperature	-20°C ~ +60°C
Operating Humidity	5% ~ 75% RH
Appearance	RAL9005 Black
Incoming/Outgoing	Front side in / front side out
Safety Certification	CE: IEC62477-1, EN61000-6-2/4
Standards	GB/T 16935.1, GB/T 17626.2, GB/T 17626.5

Communication & Interfaces

Interface	Details
BMU Communication	CAN
UPS Communication	RS485 / CAN
SBMS Communication	RS485 / CAN
Monitoring Software	Ethernet (LAN)
Dry Contact	Max. 2 dry contact outputs (24V GND)
DC Start	Battery powered; commercial power as on/off signal
AC 220V Input	Municipal power signal input (from PCS/Inverter/UPS output side)
Parallel ID Setting	4-bit DIP switch, supports up to 15 RBMS parallel
Terminating Resistor	120R, ON for last unit in parallel applications

System Architecture

Stand-alone Mode: Secondary architecture (BMU + RBMS) - suitable for 10kWh-100kWh projects.

Multi-cluster Parallel Mode: Three-level architecture (BMU + RBMS + SBMS) - suitable for 50kWh-2MWh+ projects.

Max. Series Connection: Up to 160 battery modules.

Parallel Capability: Up to 8 RBMS units (standard); up to 15 with DIP switch configuration.

Model Naming Rules

Example: RBMS-D23-50A-350 (240V)

Code	Meaning
RBMS	Rack Battery Management System
D	D: Multi-cluster parallel / S: Stand-alone
2	2: Two-wire system
3	3: 3.5-inch embedded screen
50A	Rated current: 50A
350	Voltage level: 350V (120-350VDC) / 500V (260-500VDC)
(240V)	Actual rated voltage of the system

Voltage Level Options:

350V: Operating range 120-350VDC
500V: Operating range 260-500VDC

Rated Voltage Calculation Example:

10 pcs × 16S LiFePO₄ (3.2V) = 10 × 16 × 3.2 = 512V

8 pcs × 15S LiFePO₄ (3.2V) = 8 × 15 × 3.2 = 384V

Applications

PV power plant storage
Island off-grid energy storage
Industrial & commercial / household energy storage
Micro-grid applications
UPS power supply
Power system 220V DC power supply

Accessories List

Name	Specifications	QTY
Power Terminal	GPS50AFP Blue	1
Power Terminal	GPS50AFP Red	1
Power Terminal Connector	S1339G24	1
AC Socket (wireable)	250V 10A	1
Dry Contact Terminal	5.08-6Pin	1
Terminating Resistor	120R	1

Transport & Storage

Transport: Prevent severe jitter, impulse, or squeeze; protect from sun and rain. Suitable for cars, trains, ships, aircraft.

Storage: Clean, dry room; ambient temperature -20°C to +55°C; relative humidity ≤75% RH. Avoid corrosive materials, water, and heat sources.

Precautions for Use

High Voltage Risk - Do not open the chassis without authorization. Risk of loss of warranty.
Secondary Protection - After disconnection, power off the system to clear the fault. Wait at least 1 minute before restarting.
Cold Start - Close the battery switch on the PCS/Inverter/UPS side before starting the battery to avoid contactor damage.
Insulated Tools - Installation and commissioning personnel must use insulated tools.
Maintenance - Disconnect the main circuit breaker to isolate the battery pack from the PCS DC bus.
Fire Safety - Use dry powder fire extinguisher or fire sand. Do not use liquid extinguishers.
Long-term Storage - Disconnect the main circuit breaker of the battery cabinet.
Avoid Harsh Environments - Avoid temperature/humidity extremes, strong vibration, direct sunlight, dust, corrosive substances, and high salt fog.

Technical Support

Statement: The technical specification is for reference only when customers select the type. The company has the final right to interpret and revise the product specification. Specifications are subject to change without notice.

Websites:

Asia: www.gcebms.com

Europe: www.highvoltagebms.com

Africa: www.battery-bms.com

America: www.hvbms.com

Package Includes: 1 × GCE 2U RBMS Unit, Accessories as listed above, User Manual

Warranty: Contact GCE for warranty terms.

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