The design of heavy outdoor machinery and equipment is transitioning from mechanical and hydraulic components to sophisticated, computer-controlled electronics and telematics systems. Such innovation has increased the need for “Harsh Environment” connectors to suit these difficult conditions.
Harsh environment connectors are vital links for power and signal transmission in outdoor and harsh conditions, where materials and designs are tested to their limits – the reliability of these connectors is therefore critical. These connectors must have unique characteristics and meet stringent requirements to ensure the reliability of applications across demanding sectors.
Engineered to perform reliably under the most challenging conditions, they withstand extreme temperatures, humidity, chemical exposure, dust, vibration and shock. They are crucial in industries such as industrial automation, agriculture, automotive, heavy machinery, renewable energy, aerospace, military, and marine.
The diverse types of harsh environment connectors are designed to meet specific application. Circular connectors, for example, are known for their ease of connection and frequent use in industrial settings. Other types include rectangular connectors, which offer high density; fibre optic connectors, which enable high-speed transmission in telecommunications; and coaxial connectors, which are used in communication systems.
Durability is crucial in extreme conditions, requiring robust materials and construction to withstand physical and environmental stresses. Material choice is vital: stainless steel, aluminium, and brass for strength and corrosion resistance and polymers such as PEEK and PTFE provide excellent chemical resistance and mechanical properties. Rubber and silicone are used for their flexibility and sealing capabilities, ensuring effective ingress protection and long-lasting durability.
Sealing is important in achieving high IP ratings IP67, IP68 or IP69K to protect against water, dust, and other contaminants. These connectors must also offer high resistance to chemicals, damp heat and extreme temperatures ranging from -40°C to 100°C, and other mechanical impacts. Above all, reliability is essential, ensuring consistent performance under continuous use and extreme conditions for long-term functionality.
In explosive environments, classified as “Class 1, Division 2” (C1D2) according to international standards, it is crucial for harsh environment connectors to ensure safety, durability, performance, and compliance. These connectors are often installed in areas where flammable gases, vapours, or liquids might be present under abnormal conditions. Additional standards focus on material resistance to salinity.
As a specialist in circular connectivity, binder provides harsh environment connectivity solutions designed to endure extreme conditions. The HEC series 696 (Harsh Environment Connector) is the top choice for robust outdoor connectors. Available in square flange and cable versions with an integrated protective conduit, this power connector offers protection up to IP67, and up to IP69K when mated. It is uniquely UV-resistant and has VDE and UL approvals. The high mechanical load capacity is demonstrated by over 500 mating cycles for the 12-pole version and more than 1,000 mating cycles for the 5- and 8-pole versions.
The rapid growth in use of sensors in outdoor harsh environments means the “go-to” industrial standard M12 connectors are increasingly being used for outdoor applications. Given binder’s long history in being a market leading manufacturer of M12 for indoor applications it is no surprise that there is an M12 connectors specifically designed for outdoor use in harsh conditions. These connectors feature stainless steel locking mechanisms, with options for either stainless steel or UV-resistant plastic housings and offer protection up to IP69K. The M12 also has a protective cap, which ensures resistance to dust and water when unmated.
With innovative design and the careful selection of materials, connector manufacturers like binder are meeting the ongoing challenge in providing ever more reliable connector solutions for signal, data and power no matter how tough or demanding the conditions.
