High-Efficiency Cabinet Air Conditioner for Industrial Cooling Systems

HISURP Cabinet Air Conditioner for Electrical Enclosures, CNC Cabinets, PLC Panels and Industrial Control Systems

When buyers search for a reliable panel cooler, they usually ask the same practical questions: How do I keep electrical cabinets cool without bringing dust inside? Should I choose a Top Mounted one or a Wall Mounted one? How to select the appropriate cooling capacity?   

HISURP gives clear answers with a product line engineered specifically for electrical enclosure cooling, not general room air conditioning.

Manufactured by Ningbo Hicon Industry, HISURP is backed by a company with industrial cooling experience dating back to 1972 and focused on industrial air conditioners and commercial air conditioners since 2003. With a 150,000 m² factory plant, 400+ employees, 123 patents, CNAS national-class labs and testing rooms, and experience serving global partners such as ABB, Schneider, Toyota, COFCO, Novenco, and Toray.

A Cabinet Air Conditioner is also commonly called a panel cooler, enclosure air conditioner, or electrical cabinet cooling unit. Its purpose is simple but critical: it removes heat from sealed electrical cabinets while keeping outside dust, oil mist, humid air, and corrosive pollutants away from sensitive electronics. For PLCs, servo drives, inverters, switch controls, CNC controllers, telecom equipment, and precision instruments, this difference is not minor. It directly affects uptime, reliability, and service life.

Why do electrical cabinets need a dedicated Cabinet Air Conditioner?

Traditional cooling methods such as exhaust fans or natural ventilation are often no longer enough. Modern electrical cabinets contain compact, high-density electronic components that generate significant heat. At the same time, factory air may contain dust, fibers, oil vapor, or moisture. If you simply ventilate the cabinet with outside air, you may reduce heat only temporarily while introducing the very contaminants that damage electronics.

That is why HISURP focuses on cooling + dust protection + dehumidification in one compact solution.

How does a HISURP panel air conditioner work?

HISURP uses the phase-change refrigeration principle. The compressor discharges high-temperature, high-pressure refrigerant gas into the condenser, where it is cooled into liquid refrigerant. After throttling, the refrigerant enters the evaporator and absorbs heat from the hot air inside the electrical cabinet. The refrigerant then evaporates back into gas and returns to the compressor, repeating the cycle continuously.

Core advantages

1. Accurate temperature control for stable enclosure operation

Users can set the working temperature inside the electrical cabinet according to actual application needs. The standard temperature adjustment range is +20°C to +38°C. Depending on model and project requirement, mechanical control or microcomputer control with LED display can be applied.

2. Cooling and dehumidification in one unit

Many electrical failures are caused not only by heat, but by the combination of heat and moisture. HISURP units provide dehumidifying cooling, helping maintain more suitable humidity and temperature inside the cabinet and reducing the risk of condensation and corrosion.

3. Sealed structure helps block dust entry

A properly matched Wall Mounted Cabinet Air Conditioner or Top Mounted Cabinet Air Conditioner works with a sealed electrical enclosure so the inside air remains isolated from workshop dust, fibers, oil mist, and airborne particles.

4. Fast, even airflow circulation

The unit uses a high-quality external rotor centrifugal fan with compact structure, large airflow, high static pressure, low vibration, and low noise. This helps cool the cabinet quickly and reduce hot spots around PLCs, VFDs, servo drives, and power modules.

5. Efficient rotary compressor

HISURP uses a fully enclosed rotary compressor with high energy efficiency and low power consumption. With vibration-reduction measures built in, the unit runs smoothly and quietly, which is valuable in precision control environments.

6. High-efficiency heat exchanger

The heat exchanger adopts internally threaded copper tubing with aluminum fins, improving heat transfer performance and system EER while supporting stable long-term operation.

7. Standard primary filter on condenser side

A primary filter on the condenser side helps prevent dust, oil, and debris from entering and affecting the heat exchanger or fan, improving overall system stability and extending service life.

8. Adjustable cold air outlet direction

The cold air outlet is equipped with a deflector so the discharge direction can be adjusted, helping optimize airflow distribution and making cabinet temperature more uniform.

9. Flexible installation and convenient maintenance

The unit is compact, light, easy to mount, and convenient to service. After installation and power connection, it can operate without complicated commissioning in most standard applications.

Top Mounted or Wall Mounted: which one should you choose?

This is one of the most important buyer questions, and it directly impacts installation efficiency and airflow performance.

A Wall Mounted Cabinet Air Conditioner is installed on the side wall of the electrical enclosure. It is the most widely used format because it is easy to access for maintenance and suitable for many general-purpose control cabinets.

Typical cooling capacities for wall-mounted models: 

300W, 600W, 1000W, 1500W, 2000W, 2500W, 3500W, 4000W

Best for:

- CNC machine control cabinets  

- automation line control cabinets  

- telecom equipment cabinets  

- inverter and servo control cabinets  

- retrofit projects with side installation space  

Door mounted / semi-embedded type

This is a side-installed version partially embedded into the cabinet for improved appearance or space control.

Typical capacities:

600W, 1000W, 1500W, 2000W, 2500W

Best for:

- compact lines where exterior projection must be reduced  

- OEM equipment with cleaner integrated cabinet design  

Top Mounted Cabinet Air Conditioner

A Top Mounted Cabinet Air Conditioner is installed on the top of the cabinet and is especially useful when side space is limited or side doors must remain clear.

Typical cooling capacities:  

1000W, 1500W

Best for:

- narrow installation aisles  

- machine tools with limited side clearance  

- cabinets requiring top-down air supply 

How to choose the right Cabinet Air Conditioner?

1. Heat load inside the cabinet

Calculate the total heat released by drives, PLCs, power supplies, transformers, relays, and other electronics.Undersizing leads to poor cooling; oversizing may increase cost and raise condensation risk.

2. Cabinet dimensions and sealing condition

A Cabinet Air Conditioner works best with a relatively sealed enclosure. Air leakage reduces cooling efficiency and may allow humid or dusty air to enter.

3. Ambient temperature and contamination level

If the site is hot, dusty, oily, humid, or corrosive, a sealed refrigeration solution is much more suitable than fan ventilation.

4. Mounting position

Decide early whether your project needs a Top Mounted or a Wall Mounted one, based on cabinet design and maintenance access.

5. Drainage condition and control requirement

If there is no drain piping, consider a model with water tank. If the project needs more precise display and control, ask for microcomputer control and LED display options.

How to calculate the cooling capacity for a cabinet

1. Calculate the surface area A = 2 × (length × height + width × height + length × width) to determine the cabinet's surface area.

2. Calculate the temperature difference ΔT = external temperature minus target internal temperature to determine the internal-external temperature differential.

3. Calculate the heat transfer through the box wall: Qs = 5.5 × A × ΔT, yielding the heat transfer rate.

4. Air conditioning cooling capacity Qo = 1.2 × (Qs + internal heat generation Qi), determining the required cooling capacity.

Technical data of cabinet air conditioner overview

Why HISURP?

Our manufacturing strength:

HISURP is a specialized industrial air conditioning manufacturer with:

- Industrial cooling experience dating back to 1972

- Focus on industrial air conditioners and commercial air conditioners since 2003

- 150,000 m²manufacturing workshop  

- 400+ employees  

- 123 patents  

- CNAS national-class laboratories and testing rooms

- Imported production facilities and mature quality control systems  

- Certifications including ISO9001, ISO14001, ISO45001, CE, UL, CB, and more

-rich exporting experiences, the cabinet air conditioners are exported to: Saudi Arabia, Greece, Mexico, Qatar, Serbia, etc. for now.

-Non-standard customization for different scenarios: Three-phase 460V and DC 48V power supply models have been exported in bulk to Greece and Saudi Arabia, adapting to differing grid specifications to meet regional requirements.

Stainless steel casing, high-temperature 60°C ambient temperature models specifically designed for Middle Eastern photovoltaic inverter cabinets; models featuring RS485 interfaces support Modbus remote reading of temperature, current, and fault codes, enabling integration into centralised monitoring systems via host computers.

Technical cooperation with Japanese specialists

The cabinet cooling line has been developed in cooperation with Japanese companies including KOUWAKOUGYO and Apiste. This adds value for buyers who care about stable design logic, proven enclosure cooling experience, and product maturity.

Customization capability

HISURP can support:

- customized parameters  

- different appearance and color requirements  

- environmentally friendly refrigerant options  

- fixed-frequency or variable-frequency solutions, where applicable  

- OEM and project-based adaptation  

This is especially useful for machine builders, control cabinet manufacturers, and overseas distributors.

Typical application industries

HISURP panel Air Conditioner products are suitable for a wide range of sectors:

- CNC machine tools  

- plastic machinery  

- telecommunications  

- food machinery  

- textile equipment  

- woodworking machinery  

- metallurgy  

- tobacco production lines  

- VFD control cabinets  

- PLC cabinets  

- servo control systems  

- switch cabinets and instrumentation enclosures  

Installation scene