IP codes for ingress protection in heavy-duty connectors It’s also fairly standard for heavy- duty connectors to provide ingress protection against fluids and solid particles. The ingress protection of connectors is rated using the same Ingress Protection (IP) codes as used for enclosures. The first digit of an IP code denotes protection from solid objects, with values ranging from 0 (indicating no protection) to 6 — indicating a fully dust- tight build. The second IP-code digit indicates protection against fluids, with values ranging from 0 (for no protection) to 8 (for continuous protection against water at a depth of 1 m) or even 9K — indicating protection against high-pressure jets. For example, an IP67-rated connector resists penetration of dust and temporary immersion in water.
Figure 2: Han-series connectors (with four and 26 pins) are somewhat of an industry standard — satisfying various data and power-connectivity requirements from 50 to 5,000 V and 3 to 200 A. Locking arrangements include a single-lever Han-Easy Lock for easy single-handed operation and a double-lever Han-Easy Lock — for more reliable locking, higher pressure tightness, and use with cable- to-cable connections. Yet another rugged option is screw locking for maximum pressure tightness and reduced risk of unauthorized use. (Image source: Harting)
industries have standardized on the heavy-duty rectangular connectors for power and control connections from the Harting Han series. In fact, this trademarked connector brand is sometimes considered synonymous with the term heavy- duty connector in general. Han-series connectors have pins arranged within a rectangular hood that mate with corresponding sockets within a rectangular housing. The connectors are generally
equipped with locking levers to let installation personnel easily and securely close the connector — ensuring that it can’t be pulled apart … even when considerable tension loads are applied. Hoods (bolt-on connector cover shells) are most common on power-cable terminations; they’re available in top-entry and side- entry configurations. Housings may be screw mounted, surface mounted, or bulkhead mounted to provide a connection on
Proprietary connector variations — why so common?
Due to the strong reliance of heavy- duty connectors on mechanical closure and gasketing features, many options on the market today are either proprietary designs or application-specific connector variations. For example, whole
we get technical
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