E-WeiChat EW-LP16 IP68 waterproof M16 4-pin circular connector (male plug + female socket)
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Product description
If your project lives outdoors, in damp cabinets, or anywhere cables get tugged and reconnected, this EW-LP16 is built around fast, repeatable mating. It’s a circular “aviation”-style connector using a one-touch plug/unplug action with automatic self-locking when inserted.
On paper, it’s aimed at industrial and mixed-environment wiring where basic connectors just don’t hold up. That said, it’s not a generic “any cable, any job” solution, so it’s worth checking the pin count, cable diameter, and whether solder/weld assembly fits your workflow.
The essentials
The EW-LP16 pairing is designed as a male plug plus a female socket, using a quick one-touch button action to unplug. When the plug is inserted, the connection locks automatically via a self-locking device, which can make day-to-day handling feel more consistent than friction-fit alternatives.
The protection claim is IP68 when mated, specified as 2m/2h. In practical terms, that’s the sort of spec you look for if your application expects water ingress risk rather than “splash only” conditions.
What stands out in everyday use
What you’ll notice most is the connection behaviour: insert to lock, then use the one-touch button to release. If you’re wiring equipment that needs occasional servicing, this can reduce fiddly steps compared with connectors that require more complex latching.
Durability is also part of the pitch, with a stated cycle rating of at least 1900 mating/unmating cycles. That’s a useful figure if you expect repeated maintenance or frequent swaps.
There’s also a clear safety expectation included: it explicitly says to prohibit plugging while energised. So it’s not meant for live hot-plugging, even if it feels convenient.
Key points on electrical performance
This model is rated for 10A and 400V (AC.V.rms), with a puncture test of 2500V. The insulation resistance is specified as greater than 1000MΩ, and contact resistance is listed as less than 3mΩ.
No connector spec matters on its own, though. What matters is whether these electrical ratings match your wiring setup and whether your installation uses the correct contact core and assembly method throughout.
Tech specs that affect fit and reliability
A few details are worth taking seriously before you buy, because they decide whether the connector is “drop-in” for your build or a headache.
- Pairing type: male plug + female socket, circular connector format, M16 thread
- Pin count: 4-pin (for this specific listing)
- Cable standard/spec: 1.5mm² / 16AWG
- Cable diameter range: Ф7.0~Ф9.0mm
- Contact diameter × number: φ1.5×4
- Assembly style: solder/weld
- Shell material: high-performance PBT plastic
- Seal: high-quality silicone ring
- Temperature range: -40°C to 80°C
- Flame retardant grade: UL94 V-0
- Contact core: copper alloy, gold plated
- Durability: ≥1900 mating/unmating cycles
The temperature range and UL94 V-0 rating are the sort of signals you want for industrial builds, they suggest this sits more in the rugged/utility category than in casual consumer accessories.
Where it shines (and where it may fall short)
This EW-LP16 is pitched for “challenging environments” and lists broad use areas such as machinery, medical, servers, energy storage/solar, power grids, automotive, marine, communications, detection/measurement, industrial control, audio-visual, and stage equipment.
In other words, it’s the kind of connector you’d consider when you need an IP68-mated waterproof connection and a locking, repeatable mate/unmate action.
However, it may not be the best match if: - You need a connector that supports hot-plugging while energised (the listing explicitly prohibits plugging while energised). - Your cable diameter falls outside the specified Ф7.0~Ф9.0mm range, or you’re using a different conductor size than 1.5mm² / 16AWG. - Your build cannot accommodate solder/weld assembly. If you’re trying to avoid that step, you may want to look for a different termination approach.
It’s a practical, rugged choice, but it’s still a component with constraints—worth respecting those constraints so you don’t end up fighting the fit.
Buying checklist and mini FAQ
Before ordering, double-check the basics: you’re buying the 4-pin version, confirm your cable is within the stated diameter range, and confirm you’re happy with solder/weld assembly.
You should also think about the installation environment. IP68 is claimed for the mated connection, so the system only performs as intended if it’s correctly assembled and properly sealed.
How many pins is this connector?
This specific EW-LP16 listing is a 4-pin version.
Is it waterproof when connected?
Yes, the protection level is specified as IP68 when mated (2m/2h).
Can you plug it in while the power is on?
No. The listing states to prohibit plugging while energised.
What cable size does it suit?
The stated cable specification is 1.5mm² / 16AWG, with a cable diameter range of Ф7.0~Ф9.0mm.
What’s the connection method for assembly?
Assembly style is described as solder/weld.
Final verdict
Worth considering if you want a rugged M16 circular connector with IP68(mated) waterproofing and a quick one-touch plug/unplug action with self-locking insertion, especially for industrial or equipment wiring that may be serviced repeatedly.
It’s not the best choice if you’re outside the stated cable diameter/conductor size, need hot-plug while energised, or can’t work with solder/weld assembly. If you match the requirements and environment, this EW-LP16 looks like a sensible, sturdier way to keep connections reliable where moisture and tough handling are part of the job.