CEE Panel and Appliance Inlet Plugs Selection Guide
When selecting CEE panel and appliance inlet plugs, compare 16 A–125 A rating, 3/4/5 poles, surface vs flange mounting and mating with female extension sockets.
This guide explains what to look for when choosing products in the CEE Panel Plugs category for mobile machinery power inlets, site containers, caravans and standby generator transfer inlets.
Why use a fixed male CEE appliance inlet (panel plug)?
Instead of hardwiring a trailing power cord onto a movable machine, container or mobile distribution board, engineers mount a fixed male-pin CEE panel plug (appliance inlet) on the equipment exterior. The incoming live feeder cable terminates in a touch-safe female CEE extension socket (coupler) that plugs into the equipment inlet. This ensures live supply leads never have exposed male pins when disconnected.
Flanged (panel cutout) vs surface-mount (wall/container) inlets
Select a straight or angled flanged panel plug when mounting over a cutout on a metal enclosure door, or a surface-mount wall inlet (with integrated rear housing and cable gland entry) when bolting onto a shipping container, trailer or building wall.
CEE panel and appliance inlet plug comparison table
| Selection Criterion | Flanged (Flush) Panel Inlet Plug | Surface-Mount (Wall / Container) Inlet Plug | Phase-Inverter / IP67 Watertight Inlet |
|---|---|---|---|
| Mounting Style | 4-screw flange over a panel or machine cutout | Self-contained housing bolted onto a solid wall | Flanged or surface-mount with bayonet ring / phase swap |
| Mating Counterpart | Mates with a cable-mounted CEE Extension Socket | Mates with a cable-mounted CEE Extension Socket | Locks into an IP67 female extension socket |
| Current & Poles | 16 A, 32 A, 63 A, 125 A; 3P (230V), 4P / 5P (400V) | 16 A, 32 A, 63 A, 125 A; 3P (230V), 4P / 5P (400V) | 16 A – 125 A; 4P (3P+E) or 5P (3P+N+E) |
| Typical Application | Mobile switchboards, compressors, test benches | Site office containers, caravans, food trucks, genset inlets | Portable three-phase pumps, chillers & outdoor docks |
Frequently asked questions
Why must a building's standby generator inlet use a male CEE panel plug rather than a female socket?
A generator inlet feeds power *into* the building transfer switch. Using a fixed male inlet plug on the wall means the cable coming from the running generator has a recessed female extension socket, preventing electrocution from exposed live pins.
Which CEE inlet plug is standard for caravans and site containers?
Single-phase 230 V caravans and small cabins use a Blue 16 A or 32 A 3-pole (2P+E) inlet plug, while three-phase construction containers use a Red 32 A or 63 A 5-pole (3P+N+E) inlet.
Can I correct motor rotation directly at the machine inlet plug?
Yes, phase-inverter CEE inlet plugs allow two of the male phase pins to be rotated 180° with a screwdriver so portable three-phase machinery always runs in the correct direction regardless of site wiring.