Condensation and humidity in cabinets are major causes of malfunctions in industrial electrical equipment. High-quality cabinet dehumidifiers can effectively maintain a dry environment in enclosed spaces, ensuring long-term stable operation of equipment. The following focuses on six leading global manufacturers, showcasing their core technologies and solutions in the field of cabinet dehumidification from both corporate strength and product characteristics.
Blue Jay
Blue Jay specializes in electricity metering, medium and low voltage power distribution protection and environmental control equipment, and has deep roots in the field of industrial electrical safety. With its core advantages being scenario-based adaptation and OEM customization capabilities, its products cover power monitoring, protection relays and cabinet dehumidification systems, serving diverse scenarios such as industrial plants, data centers and new energy power plants worldwide.
In the dehumidifier domain, Blue Jay’s DH series employs thermoelectric (Peltier) dehumidification technology configured for electrical cabinets: models such as DH2-60, DH4-60, DH5-80 offer capacities from ~20W to 200W, airflows up to ~140 m³/h, and optional functions such as RS485 communication, alarm output and heater integration. These devices actively condense moisture within sealed enclosures, helping prevent corrosion and condensation-related faults in power distribution systems.Electrical Cabinet Dehumidifier – Blue Jay
Hoffman
Hoffman is a leading global provider of cabinet systems and thermal management solutions. With decades of experience in electrical cabinets, the company has expanded into the industrial cabinet dehumidification accessories market.
Their H2Omit™ thermoelectric dehumidifier is specifically designed for cabinet interiors. Key features include: removal of moisture from cabinet air, built-in drain hose, ABS housing, compatibility with low-carbon steel, aluminum, stainless steel, or non-metallic cabinets, and support for 24V DC power. This product offers a cost-effective way to reduce condensation and extend the lifespan of internal electrical and electronic components.
Saginaw Control and Engineering (SCE)
SCE specializes in industrial electrical protection and cabinet system solutions. The company provides standard and custom cabinet enclosures, thermal management systems, and accessories, serving clients in power distribution, industrial automation, and process control.
For example, their SCE-TEDH24VDC thermoelectric dehumidifier, rated at 24V DC input, uses semiconductor condensation and can be installed in cabinets via magnetic mounting bases, recessed mounting, or DIN rail mounting. This model condenses moisture from the air inside the cabinet, with a drainpipe leading outside; its maximum dehumidification capacity is approximately 0.6 L/day. This equipment is suitable for enclosed or low-ventilation environments such as control cabinets and outdoor switch cabinets, effectively preventing corrosion or malfunction of electronic components caused by internal moisture.
ELMEKO
ELMEKO specializes in cabinet components, such as cooling systems, lighting, heating, and dehumidification solutions. They focus on modular, thermoelectric-based products designed for control cabinets and enclosures in harsh industrial environments.
ELMEKO’s product range includes Peltier effect-based cooling and dehumidification units with integrated control electronics. These solutions are compact, IP-rated, and support Industry 4.0 connectivity. Their emphasis on high-quality components, rapid customization, and reliable supply makes them ideal for OEM switchgear, automation control cabinets, and industrial control enclosures.
Sanda
Sanda is a Chinese company specializing in the manufacture of industrial environmental control equipment, with products including cabinet air conditioners, semiconductor dehumidifiers, and temperature and humidity controllers. The company emphasizes R&D and manufacturing capabilities, possessing qualifications for intelligent and customized production and export.
Their semiconductor (Peltier) dehumidifier utilizes thermoelectric refrigeration technology, using a fan to draw moisture from inside the cabinet into the condensation chamber, where condensate is discharged according to a set schedule. Typical models offer a dehumidification capacity of approximately 450 mL/day in high-humidity environments. They support RS-485 communication and can be wall-mounted or installed at the bottom of a cabinet. Suitable for enclosed environments such as substations, communication boxes, and energy storage cabinets, they feature adjustable start-up humidity and temperature, standard temperature and humidity sensors, and automatic control functions.
Dr. Neumann Peltier-Technik GmbH
Dr. Neumann Peltier-Technik GmbH is an environmental control equipment manufacturer specializing in Peltier (thermoelectric cooling) technology. The company is dedicated to providing integrated cooling, dehumidification, and heating solutions for high-precision environments such as robotic systems, industrial control cabinets, data centers, and communication base stations.
Their Switch Cabinet Dehumidifier series, based on Peltier technology, is suitable for harsh environments with temperatures ranging from -40°C to 90°C and an IP67 protection rating. The equipment uses a thermoelectric cooling plate to create a condensation process inside the cabinet, collecting moisture and draining it to an external drainage system to prevent condensation, corrosion, and component failure. This series supports simultaneous operation of multiple modules, achieving highly efficient dehumidification of large control cabinets or server room cabinets.
Summary
Global server rack dehumidifiers are mainly divided into two categories: heated anti-condensation type and semiconductor condensation type. American brands Hoffman and SCE primarily use heated types, emphasizing simple structure, reliability, and durability; while Blue Jay, ELMEKO, Sanda, and Dr. Neumann focus on Peltier semiconductor condensation technology, offering higher dehumidification efficiency and more intelligent control. The different manufacturers’ technical approaches and product attributes can be selected based on the application environment, humidity level, cabinet sealing, and cost requirements.
