What will cause power failure and what can be done to resolve?

Check whether the positive and negative poles are reversed, and reconnect after confirming. If it cannot be turned on, please return the power supply back to BWT for inspection & repairing.

What are the protection functions of the inverter power supply?

Input under-voltage protection, anti-DC input reverse connection, buffer protection, over-voltage protection, overload protection, short-circuit protection, over-temperature protection, temperature-controlled fan, etc.

48VDC 220VAC 21kw Rack Charger

Name: 48VDC 220VAC 21kw Rack Charger
Brand: Shenzhen Bwitt Co., Limited
SKU: 2269259695

Guangdong, ChinaShenzhen Bwitt Co., Limited

US$1,420.00

1-9 Pieces

US$1,410.00

10-49 Pieces

US$1,400.00

50+ Pieces

Sample price:US$1420.00/piece.Request sample

Product profile

Customization

Available

Output Type

Single

Warranty

1 Year

Model NO.

BWT220/48-350AS

Output Power

21000W

Input Voltage

220V

Connection Mode

Parallel Switching Power Supply

Starting Mode

Self-excited Switching Power Supply

Voltage Regulating Mode

Width Modulation Type

Power Supplying System

Terminal Power Distribution Equipment

Energy Transmission

Two-way Transmission

Modulation System

PWM

Certification

CE, ISO

Brand

Bwitt

Product Name

Rectifier System

Protections

Short Circuit Overtemp Overload Overvolt

Application

Laboratory/CCTV Camera/Data Center

Power

21000W

Transport Package

600X560X28 Cm

Specification

482*410*368mm

Trademark

BWITT

Origin

China

HS Code

8504401990

Production Capacity

5000piece/Year

Key features

High Efficiency & Power: 21KW max power capacity with 96% efficiency and <5% THDi at full load.

Wide Input Voltage Range: Supports 90~290Vac AC input, ensuring stable operation in varying grid conditions.

Customizable Output: Flexible output options including 24V, 48V, 110V, 125V, and 220V DC with various amperages.

Smart Monitoring & Control: Features SNMP, RS485, LCD display, and real-time status detection with sound-light alarms.

Robust Protection System: Includes short circuit, overtemp, overload, overvolt, and reverse connection protections.

Compact Rack Design: 19-inch rackmount shelf with modular configuration for easy expansion and maintenance.

Reliable Quality & Warranty: CE and ISO certified with a 1-year warranty and MTBF exceeding 100,000 hours.

OEM/ODM Service: Professional OEM and ODM services available to meet specific client requirements.

Company profile

Importers and ExportersYears of Export ExperienceSelf-brandedIn-stock Capacity

Shenzhen Bwitt Co., Limited

Guangdong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2020-02-01Nearest Port: shenzhen, guangzhuo, FoshanAverage Response Time: ≤1.52h

AI-Powered supplier vetting

SummaryThe supplier demonstrates OEM/ODM and broad customization capabilities, supported by stated experience, R&D personnel, quality-control staff, ISO 9001 certification, and multiple production lines. Export orientation is substantial, with 71%–90% of sales from exports and export activity beginning in 2020. However, no overseas warehouses, showrooms, agents, branches, or offline trade-show participation are reported, and no main export-market presence is recorded. Service procedures exist, but corrective-action and complaint-handling records are not documented. Financial credibility cannot be reliably assessed because the provided financial figures are non-informative and monetary data is excluded.

Supplier typeThe supplier presents itself as a manufacturer with OEM experience, three reported production lines, and both agency-assisted and self-operated export channels. Its product range includes rack-mount inverters, switching power supplies, static transfer switches, and DC converters.

CertificationsThe supplier reports ISO 9001 certification and CE product certification capability. These certifications provide explicit evidence of quality-system and product-compliance credentials, although no further certification scope or validity details are supplied.

R&D capabilityThe supplier reports new products during the past year, offers ODM services, and has 6–10 R&D engineers. However, it reports no available SDK, so software-development integration capability is not demonstrated.

Production capacityThe supplier reports two production lines in one manufacturing record and three in another, plus ongoing quantity reconciliation for each batch or batch production. It also describes controls covering materials, SMT, assembly, aging tests, inspection, and packing, indicating established manufacturing and quality-control processes.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization. Its stated OEM experience and ODM availability further support broad product-development flexibility.

Product Q&A

Q:Do you have charging solutions?

Yes, BWT is suitable for battery charging usage. Our rectifier system is widely used for N+1 power supply and battery charging system management.

Q:Does the product support the SNMP function?

Yes, 90% of BWITT products support SNMP. All products are built-in with RS485 communication as standard.

Q:What is RS485?

RS485 is a communication interface that supports real-time data communication. It allows the use of monitoring software to monitor and control the working condition of the inverter power supply in real-time.

Q:How about the inverter load?

Super overload capacity, can withstand full load startup. With bypass switch, it can switch to bypass power supply when overloaded.

Q:Can I choose the mains mode for my inverter power supply?

Yes, BWT inverter supports AC main power supply and DC main power supply. 2 modes can be selected flexibly, and the mode can be changed through the LCD panel or the communication background software.