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DC POWERED
48V DC Cabinet Air Conditioner
Direct DC operation for telecom, solar, and hybrid power sites · No inverter required
1800 W Cooling at 35°C
42–58V DC input range
3.2 W Standby draw
This 48V DC cabinet air conditioner is designed for electrical and telecom enclosures operating directly from a 48V DC power bus. The unit eliminates the DC-to-AC conversion stage, reducing conversion losses and removing the inverter from the maintenance scope. It is intended for sites where DC distribution is already present and cooling loads are managed alongside other DC equipment.
The compressor and fan motors operate from the DC bus across a 42V to 58V range, accommodating battery voltage swing during charge and discharge cycles without interrupting cooling. Standby draw of 3.2W is relevant for solar-powered sites where overnight battery capacity is a limiting design factor.
Cooling capacity 1800 W at 35°C
Input voltage 48V DC nominal
Max current 42 A at 48V
Enclosure rating IP55
Refrigerant R290, 320 g
Net weight 42 kg
Commercial and Technical Advantages
Direct DC operation Operates from the 48V DC bus without an inverter stage. Reduces conversion losses and removes the inverter from the maintenance scope. Applicable where the site already distributes DC power to equipment.
Battery voltage tolerance Continuous operation across 42V to 58V DC. Cooling is not interrupted during charge or discharge transitions. Configurable low-voltage cut-off prevents deep discharge of the battery bank.
Low standby consumption Standby draw of 3.2W when the cabinet is at setpoint. Relevant for solar sites where overnight battery capacity is the limiting design factor and parasitic loads must be accounted for.
Site energy coordination Communication interface allows the controller to receive charge state or available capacity signals from the site power system, adjusting cooling output to match available energy rather than fixed demand.
Documented electrical data Input current curves, inrush characteristics, and cut-off thresholds provided in the technical submittal for integration with site DC distribution and protection design.
Service parts program Compressors, DC fans, controllers, and protection devices held as service parts for a minimum of 10 years. Relevant for remote sites where parts availability determines maintenance scheduling.
Technical Parameters
| Parameter | Specification |
|---|---|
| Cooling capacity at 35°C ambient | 1800 W ± 5% |
| Capacity at 45°C ambient | 1620 W (derated) |
| Operating ambient range | -30°C to +55°C |
| Nominal input voltage | 48V DC |
| Input voltage range | 42V to 58V DC |
| Maximum input current | 42 A at 48V |
| Inrush current limit | 1.5× nominal |
| Standby power draw | 3.2 W |
| Low voltage cut-off | 40V DC, configurable |
| Refrigerant and charge | R290, 320 g (GWP 3) |
| Enclosure rating | IP55 (IEC 60529) |
| Sound pressure at 1 m | 56 dB(A) at 25°C |
| Dimensions (H×W×D) | 900 × 580 × 310 mm |
| Net weight | 42 kg |
| Communication | Modbus RTU (RS-485) standard |
Deployment Contexts
01 Telecom base stations Macro and small cell sites operating from 48V DC plant with battery backup, where cooling is powered from the existing DC distribution.
02 Solar and hybrid sites Remote installations powered by photovoltaic arrays and battery banks, where DC cooling avoids additional conversion hardware and losses.
03 Edge and micro data centers Small computing cabinets in distributed locations where DC power distribution is already in place and thermal load requires active cooling.
04 DC-powered industrial enclosures Industrial control cabinets operating from 48V DC distribution where AC supply is unavailable or intentionally avoided for reliability or safety reasons.
Selection and Installation Notes
DC supply sizing Size the DC feed for 42 A continuous at 48V, with cable and protection rated for the maximum current at the lowest operating voltage. Account for the cooling load in the site energy budget.
Cut-off configuration The low-voltage cut-off is factory set at 40V and adjustable. Set the threshold above the battery depth-of-discharge limit to avoid competing protection actions with the site controller.
Cable and protection Copper conductors 10 mm² minimum. DC-rated fuse or breaker at 50 A. Verify voltage drop between the distribution point and the unit does not exceed 2% under full load.
Clearance Maintain 300mm at the evaporator return and 500mm at the condenser discharge. Keep the condenser air path free of recirculation from the evaporator outlet.
Refrigerant handling R290 is classified A3 (flammable). Service must follow local regulations for flammable refrigerants, including venting, leak detection, and technician certification requirements.
Maintenance interval Filter inspection every 2 to 3 months at dusty sites. Condenser coil cleaning quarterly. Annual check of DC connections, cut-off threshold, and refrigerant charge.
Procurement FAQ
No. The unit accepts 42V to 58V DC directly. Where the site bus voltage is outside this range, an external DC-DC converter is required. Provide the bus voltage and available current for evaluation.
The technical submittal includes input current at multiple voltage points and an annual energy estimate based on ambient profile. Provide the site load profile and battery capacity for a coordinated energy calculation.
The platform is available with 24V DC input at correspondingly higher current. Casing dimensions are unchanged. Contact the sales team for the 24V model reference and current rating.
Dimensional drawing, DC input characteristics, wiring diagram, capacity table, refrigerant data sheet, communication register map, and declaration of conformity. Flammable refrigerant handling documentation is included for R290 units.
Standard configuration lead time is 5 to 7 weeks. Orders above 50 units are scheduled individually. Custom voltages or communication options add 2 to 3 weeks. Contact the sales team for a production slot quotation.
Standard warranty is 24 months from commissioning or 30 months from shipment. Compressor coverage extends to 60 months. Warranty is conditional on documented maintenance and correct DC supply configuration.
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CUSTOM ISO 9001 · CE Certified
Shanghai Soouney Refrigeration Equipment Co., Ltd.
A large-to-medium-sized high-tech enterprise integrating R&D, production and sales. Upholding "integrity, quality, service and innovation" — delivering reliable cooling solutions to the world.
11+
Export Countries
200+
Projects Delivered
19+
Years of Innovation
100%
Client Satisfaction
2007
Engineering Excellence in Refrigeration
Shanghai Soouney was founded with a vision to become a leading force in the refrigeration industry. We are China 48V DC Cabinet Air Conditioner Manufacturers and Custom 48V DC Cabinet Air Conditioner Suppliers. Today, we are a renowned brand in cabinet air conditioners and industrial chillers, recognised by professionals worldwide.
Rooted in the Chinese market, we provide reliable refrigeration solutions to clients across the globe — from standard products to professional customisation.
From standard products to professional customization — we deliver precision cooling.
R&D Driven
High starting points, stringent standards — continuous innovation
Integrity & Trust
Long-term partnerships built on transparency and after-sales support
Certified Quality
ISO 9001, CE, and industry-specific approvals across all lines
Global Mindset
Serving 40+ countries with tailored refrigeration solutions
"We don't just cool equipment — we build trust, one project at a time."
Why Soouney
Driven by Quality & Innovation
Committed to delivering excellence through continuous improvement and customer-centric solutions.
R&D Focus
High starting points, stringent standards — continuous product improvement
Integrity & Service
Long-term partnerships built on trust, transparency and after-sales support
Global Presence
Rooted in China, serving worldwide with reliable refrigeration solutions
Certified Quality
ISO 9001, CE, and industry-specific approvals for all product lines
