Data centers are handling and analyzing enormous amounts of information daily. As data generation increases, the heat generated by the data center indispensably increases. This excess heat generated by data centers can harm the hardware including Central Processing Unit (CPUs) and Graphic Processing Unit (GPUs), reducing their performances, or causing complete failures. To ensure optimal operation, it is crucial to select the right cooling solution.
Market Trends:
According to the (Technavio report 2023), the global market for cooling data centers is projected to increase from USD9.5 billion in 2020 to USD22.6 billion by 2025, with a Compound Annual Growth Rate (CAGR) of 18.0%. However, the high energy consumption associated with data center cooling contributes to increased carbon emissions and energy costs. Therefore, businesses are seeking eco-friendly and energy-efficient cooling technologies, such as free cooling, liquid cooling, and artificial intelligence (AI).
Free Cooling:
One of the most popular methods for cooling data centers is free cooling, which utilizes outer air to cool the center, as opposed to traditional air conditioning. However, technology is not suitable for all climates. For instance, in humid areas, free cooling may cause condensation that damages the hardware or necessitates additional cooling during warmer periods.
Liquid Cooling:
Liquid cooling is gaining popularity in data centers due to its efficiency. Liquid coolant is used to remove heat from the hardware, as liquids offer higher thermal capacity than air resulting in reduced energy consumption. Additionally, liquid cooling fans are quieter than traditional air-cooled fans. As a result, many data centers are turning to this technology to improve their cooling efficiency.
Liquid cooling systems can be classified into two types, namely direct and indirect. Direct liquid cooling involves direct contact between the liquid and hardware, removing heat directly from the source. On the other hand, indirect liquid cooling uses the liquid to cool a heat exchanger, which draws heat from the hardware. Although direct liquid cooling is more effective in removing heat directly from the source compared to indirect liquid cooling, it may require a higher implementation and maintenance cost.
AI-Based Cooling:
AI-based cooling systems utilize sensors to analyze data and optimize temperature and humidity levels within data centers. Furthermore, the systems can predict and prevent potential cooling issues. Implementing AI-based cooling system can reduce energy consumption and enhance cooling efficiency. However, it may involve significant upfront cost and ongoing AI Algorithms development to ensure the accuracy of the real-time data.
In Conclusion, selecting the appropriate cooling solution based on business needs is vital for data centers to ensure optimal performance, reduce energy consumption, and minimize the risk of hardware damage and downtime.
As an industry leader, Johnson Electric offers liquid coolant pumps such as WP80 BLDC Coolant Pump using Brushless DC (BLDC) motors technology and on-board electronic controls that provide intelligent pump operation and safety features.
The Brushless DC (BLDC) motors, with their exceptional features such as speed stability, high efficiency, reliability, and long lifespan, are considered the most suitable option for pump drives in Coolant Distribution Units (CDUs) utilized in data centers. The brushless motor technology is highly compatible with in-row or rack-mounted CDUs and on-board electronic controls, offering intelligent pump operation and safety features for major automotive OEMs and Tier 1 suppliers in Europe, America, and Asia.
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The Nova22 DR22 Series is a family of 22.5mm wide DIN Rail mount Solid State Relays with ratings up to 35 Amps at 600 VAC. The Relay or Contactor terminal configurations offer versatility and the possible use of plug-in connector for the control input, in either standard “screw” or “spring cage” terminals.
These powerful and ready to use SSRs come with an integral heat sink, eliminating the need for complex thermal calculations. DR22 Series models are C-UL-US approved.
Features:
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Sensata | Crydom offers an extensive line of DIN Rail mount Solid State Relays and Contactors to suit a broad range of market needs. DIN rail has become very common on industrial panels and cabinets, which makes DIN Rail mount one of the main mounting styles for industrial devices.
Our DIN Rail mount AC output solid state relays and contactors are available in single, dual, 3-phase and 4 channel configurations with ratings from 2 to 75 Amps per channel at 24 to 660 VAC and motor ratings of up to 5 HP at 480 VAC.
Housing width varies from 6mm for the lowest rated DIN rail AC solid state relay, up to 54mm for the 4 channel version. These DIN rail AC SSRs don’t require additional heat sinking, which makes them “ready-to-use”.
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General Use Of Microswitches:
Microswitches have become indispensable in the sensing and control industry for controlling electrical signals. With years of experience, Johnson Electric has supplied billions of microswitches used in home appliances, industrial equipment, automotive applications, agricultural machinery, and control systems worldwide. In most applications, the requirements for the switches are quite simple: they consist of at least two contacts, a common contact with either a normally open contact or a normally closed contact, connected to a snap-action mechanism to switch between the contacts and turn devices on and off. While these switches can operate safely and reliably in general applications, they have limited capabilities in various harsh environments. For this reason, sealed microswitches emerged as a viable solution. Sealed microswitches are basically the same as un-sealed microswitches with the addition of a protection against dust or moisture to enter the switch and reach the contact system.
Microswitches in Home, Industrial, or Automotive Applications:
The requirements for switches, however, can be extremely demanding in environments with high humidity, such as certain household appliances (dishwashers, coffee machines, etc.) or in industrial and automotive applications. Besides water, oil and dust can have a major impact on the applications, sudden temperature changes can also affect the proper functioning. It requires a high degree of sealing to ensure that the switches work without any problems. For example, this sealing should not only withstand the standard temperature range of -40°C to +85°C, but also function at higher temperatures or unexpected temperature drops. These specific applications therefore require a balanced and customized solution in sealing technology, regarding materials, switch- and seal design.
Sealing Technology:
To achieve sealing against dust or water, a "flexible" membrane must be fitted on all switch parts that have an open connection between the internal mechanism of the switch and the outside world. Such parts may be the plunger, the housing parts, or the terminal outputs. In the case of the plunger, the membrane must be flexible; in other areas, a more rigid seal may be sufficient. Consequently, for the microswitch to be manufactured properly and to ensure its function for a long time in harsh environment, the choice of sealing materials is crucial. Adding a seal to a microswitch affects its operating characteristics. In the case of the plunger, adding a seal usually increases the operating force. On the terminals, the seal can limit the soldering time to prevent overheating.
To provide a high-quality seal, Johnson Electric uses either a seal ring mounted separately on the plunger or twin-shot technology to provide housing parts with built-in seals. Different technologies are used for the housing parts and terminals. For example, either by ultrasonic welding of housing parts or by applying a special glue. By applying these solutions, the microswitches can be qualified with the IP67 degree of protection. When open terminals are used, IP protection is limited to the top or plunger side.
Johnson Electric Offer:
Johnson Electric's qualified switches are used to accurately detect the position of mechanical components in industrial and household applications. Additionally, to ensure 360-degree protection of the microswitch, Johnson Electric offers the option of adding moisture protection on the terminal side with lead wires soldered to the switch terminals. These lead wires are then routed through a cable box and potted to ensure IP67 protection on the terminal side. If the switch is UL approved the wires must also be UL approved. The final microswitch product is an IP67-protected switch with an operating temperature range between -40°C and +85°C according to UL61058 and even up to +125°C on demand.
Sealed switches are available in a wide range of sizes and ratings. The most common series are L16, V4NS, F1NS, V3S, 4BR, V9N and TS sealed switch families. Except for the TS, all other switches can be supplied with regular levers or terminals. All mentioned switch families have a UL or/and ENEC approval.
Conclusion:
Johnson Electric can offer you a complete program of sealed switches. The features of these switches include compact size, high lifetime, a high level of protection, and increased electrical properties, etc. There are different types of microswitches, but their selection depends on the requirement. To support you with the correct switch selection please contact our sales department for more information.
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Safety is a primary focus in the oil and gas industry where flammable fuel must be transported and stored appropriately to avoid hazardous situations. With ATEX approval our Level Sensors and Float Switches are trusted to monitor levels in diesel tanks, boilers and sub sea oil storage tanks.
Our Level and Float Sensors mean we have a wealth of experience and expertise in developing industrial sensors ideal for use in this industry sector.
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Johnson Electric, the world leader in micro motors, offers custom engineering solutions based on a wide range of low voltage DC and high voltage DC motor platforms.
The low voltage DC platform provides power density and compact packaging options.
The high voltage DC range provides power density and space saving advantages versus traditional AC motors in similar applications.
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Subminiature PCB relays
The 32 Series comprises miniature 6 A relays for printed circuit board mounting with the following features (according to Type)
Functions & Features:
Applications:
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Magnet wire solutions from TE Connectivity deliver high-quality, cost-efficient, and clean terminations for motor, coil, solenoid, and other magnet wire applications. Solutions are available to terminate copper wire, aluminum wire or a combination of both.
MAG-MATE and SIAMEZE terminals are based on insulation displacement contact (IDC) technology, while AMPLIVAR products terminate magnet wire through crimp compression. For compressor applications, TE also offers cluster block connectors designed for terminating hermetic header pins.
These magnet wire solutions eliminate the need for pre-stripping and soldering of magnet wire, resulting in a highly repeatable and automatable termination process.
MAG-MATE Terminals
Insulation displacement contact (IDC) terminals available in poke-in, poke-in tab, splice, crimp wire barrel, solder post, quick connect tab, pin, and receptacle styles. Standard MAG-MATE terminals accept 34-11AWG magnet wire.
AMPLIVAR Terminals & Splices
Crimp terminals and splices with a unique wire barrel design featuring serrations and burrs that displace magnet wire insulation without wire stripping. AMPLIVAR products are designed to terminate magnet wire to itself or in combination with solid or stranded lead wire.
SIAMEZE Terminals
Compact IDC terminals for interconnecting magnet wires, lead wires and other components in space limited systems. The terminal is available with a moving beam contact that accepts a wide range of wire sizes in a single part.
Cluster Blocks
Fully insulated, one piece housing connectors that allow electrical connection of sealed hermetic header pins on compressors. These connectors only accept pins from one side, preventing reversed polarity connections.
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Our power relays are designed to withstand the tough requirements of the commercial vehicle industry, especially for construction and agricultural machinery. With the new plug-in connector compatible with the HDSCS series we are now also part of the connection technology in modern on-board electrical systems.
The plug-in connector is made of robust thermoplastic with flammability class UL94 V0 and has an integrated secondary interlock with poka-yoke principle. Even under the toughest conditions the control connections can no longer come loose.
The cables can already be precut. During final assembly of the vehicle they are only to be plugged in and locked. Special tools such as tightening torques, Torx bits, crimping tools for cable sockets etc. are no longer required during final assembly.
The reverse polarity protected plug-in connection ensures a clear assignment of the control contacts.
The plug-in connector provides a robust and save connection. It is protected with IP 5k4 against penetrating dust and water.
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Heavy-duty industrial connectors have been specially designed for use in particularly harsh environments.
High contact density in the most compact footprint – this is what the space-saving contact inserts of revos DD offer. They fit in revos BASIC housing sizes 6/6H-, 10/10H-, 16/16H-, and 24/24H.
Connection is made with high-quality turned crimp contacts and offers a connection range from 0.14 to 2.5 mm² at a rated voltage of 250 V.without compromising the number of electrical connections.
REVOS DD allows more connections in a smaller housing saving space without compromising the number of electrical connections.
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© E. Preston (Electrical) Ltd 2025.
UK distributor of electrical and electronic components.
