Enclosure air conditioner for BESS cabinets, front view: upper grille with control panel, large intake grille below

ISO 14001

ISO 45001

ISO 9001

Enclosure Air Conditioner for BESS Cabinets (600 W–⁠3 kW)

For BESS and outdoor cabinet builders — mounts in the cabinet wall, cools without letting outside air in, and runs from -30 to +55 °C with heating.

Commercial & Industrial Energy Storage StationTelecom Base Station ShelterEdge Computing SiteSecondary Equipment E-HouseSite Cooling & Security Support

Key Metrics

600-3000W

Cooling

-30 to +55°C

Ambient

IPX5

Protection

Wall cut-out

Mounting

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Product Features

Closed-loop cooling

Only the cabinet's own air circulates through the unit, so outdoor dust, moisture and salt mist stay outside.

Closed-loop cooling

Only the cabinet's own air circulates through the unit, so outdoor dust, moisture and salt mist stay outside.

-30 to +55 °C range

Outdoor storage cabinets keep running across that range, so projects from desert heat to northern winters select from one series.

Built-in heating

One unit cools the cabinet in summer and keeps it warm in winter, with rated heating of 500–⁠2000 W.

RS485 to the BMS

RS485 communication, with provision for CAN, lets the cabinet BMS or site monitoring read the unit's status; the point list is agreed per project.

Five cooling ratings

Match the rating to the cabinet's heat load: a small cabinet takes a small unit, with a smaller wall cut-out and less weight on the wall.

Factory integration

Supplied on its own to cabinet makers, or installed and wired at the factory in ETENZ E-Houses and BESS enclosures.

Product Details

Enclosure air conditioner schematic: internal circulation duct and external condenser duct kept apart

Cabinet air circulates through the evaporator; outside air only crosses the condenser, in a separate duct

The unit sits in the cabinet wall. On the inside face is the evaporator duct: cabinet air is drawn in, cooled and returned to the cabinet, at 170 to 850 m³/h across the five ratings. On the outside face is the condenser duct, where ambient air passes over the condenser and carries the heat away. The two ducts are separated inside the unit, and the refrigerant is R134a. Aim the cold-air outlet at the batteries or electrical equipment that produce the heat, and keep the space in front of the return inlet clear.

Cabinet air circulates through the evaporator; outside air only crosses the condenser, in a separate duct

Each rating mounts in a cut-out in the cabinet wall: the 600 W unit measures 352 × 582 × 170 mm and weighs about 14 kg, the 3 kW unit 550 × 1350 × 250 mm and about 60 kg. Cut-out dimensions and the requirements for reinforcing and sealing its edge come with the unit; when the unit goes into an ETENZ enclosure, ETENZ draws them into the enclosure drawings.

When the cabinet temperature falls below its set point, the unit switches to heating: rated heating is 500 W for the 600 W unit, 1000 W for the 1000 W and 1500 W units, and 2000 W for the 2000 W and 3000 W units. The whole unit is rated for -30 to +55 °C ambient. The start and stop temperatures for cooling and heating are set at commissioning to suit the working temperature range of the equipment inside. Cabinets with high internal humidity add a BESS cabinet dehumidifier to control moisture.

Size the unit on the total heat load in the cabinet: the heat from the equipment inside plus the solar and ambient heat that enters through the cabinet walls, with a margin added, matched against the five rated cooling capacities of 600, 1000, 1500, 2000 and 3000 W. Rated power input across the range is 330–⁠1110 W, and every rating runs on single-phase 220 V ±15%, 50/60 Hz. Noise rises with the rating from 59 dB(A) to 70 dB(A), worth factoring in for outdoor cabinets near offices or homes. Standard corrosion protection is C3; coastal and chemical sites can specify C4 or C5.

Delivery Scope Options

Scope 1

Equipment supply

Scope 1

Equipment supply

The rating is selected from the cabinet's heat load, size and site conditions, and the complete unit ships with outline and cut-out dimensions plus wiring and communication documents.

Scope Includes:

Outline and cut-out dimensions

Wiring documents

Communication documents

Inquire

Scope 2

Integrated with the enclosure

Scope 2

Integrated with the enclosure

Delivered with an ETENZ E-House or BESS enclosure, the unit is installed, wired and tested at the factory; for your own battery or telecom cabinets, the cut-out and mounting dimensions and the power and communication wiring are checked against the same interface documents.

Scope Includes:

Factory installation and wiring

Cut-out and mounting dimensions

Power and communication interface documents

Inquire

Specification Comparison

Detailed technical specification comparison to help you choose the most suitable model configuration

Rated cooling capacity

600

Rated heating capacity

500

Rated power input

330

Internal air flow

170

m³/h

Noise

≤ 59

dB(A)

Dimensions (W × H × D)

352 × 582 × 170

Approx. weight

Parameter	600 W	1000 W	1500 W	2000 W	3000 W	Unit
Rated cooling capacity	600	1000	1500	2000	3000	W
Rated heating capacity	500	1000	1000	2000	2000	W
Rated power input	330	350	580	870	1110	W
Internal air flow	170	370	370	650	850	m³/h
Noise	≤ 59	≤ 61	≤ 61	≤ 65	≤ 70	dB(A)
Dimensions (W × H × D)	352 × 582 × 170	495 × 795 × 195	495 × 795 × 195	536 × 1100 × 216	550 × 1350 × 250	mm
Approx. weight	14	27	28	49	60	kg

Table supports horizontal scrolling to view more models

Technical Specifications

Mounting

Recessed in the cabinet wall

Cooling method

Air-cooled

Power supply

Single-phase 220 V ±15%, 50/60 Hz

Operating ambient temperature

-30 to +55

°C

Ingress protection

IPX5

IEC 60529

Corrosion protection

C3 (C4 / C5 on request)

ISO 12944

Refrigerant

R134a

Communication

RS485 (with provision for CAN)

Parameter	Specification
Mounting	Recessed in the cabinet wall
Cooling method	Air-cooled
Power supply	Single-phase 220 V ±15%, 50/60 Hz
Operating ambient temperature	-30 to +55 °C
Ingress protection	IPX5 IEC 60529
Corrosion protection	C3 (C4 / C5 on request) ISO 12944
Refrigerant	R134a
Communication	RS485 (with provision for CAN)

Product FAQs

This series is built for outdoor battery storage cabinets: it runs across a wide ambient range, includes heating, has a high ingress protection rating, and its RS485 communication (with provision for CAN) connects to the cabinet BMS. The temperature range and protection rating are in the specification table.

Mounted in the cabinet wall, its inside duct draws cabinet air across the evaporator and returns it cooled, while its outside duct passes ambient air over the condenser to carry the heat away; the two ducts are kept separate. When the cabinet gets too cold, the unit switches to heating.

The start and stop points for cooling and heating are set at commissioning to match the working temperature of the equipment inside. When the unit connects to the BMS or a site monitoring system, the communication point list is agreed per project.

Yes. The rating is chosen from the cabinet's heat output, the local climate and the available power supply.

Yes. For coastal, salt-mist or chemical environments the corrosion protection can be upgraded; the standard and optional classes are listed in the specification table, so mention it when you request a quote.

Cabinet humidity depends on how well the cabinet is sealed and on the local climate. Where it runs high, a BESS cabinet dehumidifier can be installed in the cabinet alongside the air conditioner.

The heat output of the equipment in the cabinet, the cabinet size and material, where the unit will be mounted, the highest and lowest ambient temperatures on site, the supply voltage, the communication protocol, any corrosion requirements, the quantity, and whether the unit is supplied on its own or integrated with the cabinet.