Current, poles, IP rating, mounting and brand — follow these five steps and you pick the right industrial plug or socket the first time, without trial and error.

The difference is not just a bit more water resistance. What IEC 60529 actually specifies, and how to choose for outdoor and wet areas.

How MENNEKES numbers its industrial plugs, sockets and connectors, and how to recognise a model at a glance.

93xx is the MENNEKES wall-mounted IP67 industrial socket series. The last digit gives the voltage, the third digit the poles and current. The full 9300–9382 table and the four comparisons people ask about most.

Interchangeability is not about the brand but four things: current, poles, clock position and IP rating. With the clock positions we verified against our own stock (110V = 4h, 230V single-phase = 6h, 400V 3-pole = 9h, 400V 4/5-pole = 6h, 500V = 7h).

One model is written 3P on one page and "3-pole" on another — it is the same number, and the earth is always counted. With a table checked against the manufacturer datasheets (voltage and clock position included).

The same product has several names: add-on socket, panel-mounted socket and flush-mounted socket are the same thing, while wall-mounted is a different one. A full glossary so you quote the right model.

The rating follows the equipment current with at least 20% headroom: 16A ≈ 7.5kW, 32A ≈ 15kW, 63A ≈ 30kW, 125A ≈ 60kW (three-phase 380V). With the conversion formulas and the four commonest mistakes.

Reefer power is its own specification: 32A, 380-440V, 4-pole (3P+earth), IP67, and clock position 3h — which does not mate with a standard 400V 4-pole 6h. Sockets, plugs, connectors, phase sequence testing and interlocks, with item numbers.

Customers call it a power box, distribution box or portable power box; we call it a socket combination. Five things decide the model: number and rating of outlets, incoming current, Type A RCD, IP rating and whether it is pre-wired.