Weipu WA22 Series Industrial Connectors with 3+PE Contacts
Technical Specifications of a 3-pin circular connector
✔ 3+PE Contact Configuration – Equipped with 3 signal/power contacts and 1 PE (protective earth) contact, forming a complete safety protection loop, effectively preventing electric shock hazards and ensuring the safety of equipment and operators.
✔ Premium Gold-Plated Brass Contacts – Brass contacts with gold plating ensure low contact resistance, excellent electrical conductivity and strong anti-oxidation ability, avoiding signal/power transmission loss caused by contact oxidation.
✔ Flame-Retardant Safety Protection – Nylon66 shell with fire resistance grade V-0 has excellent flame-retardant performance, effectively inhibiting flame spread, reducing fire risks, and meeting strict industrial safety standards.
✔ Reliable Screw Termination – Screw termination design ensures firm connection between contacts and cables, easy to install and disassemble, and the connection stability is not affected by vibration, suitable for fixed wiring scenarios.
✔ High Electrical Performance – Rated voltage 400V AC, rated current 16A, supporting wire sizes up to 2.5mm² (14AWG), capable of stable transmission of large current and high voltage, meeting the power demand of most industrial equipment.
✔ Excellent Insulation Performance – Insulation resistance up to 2000MΩ, 2000V AC test voltage (1min) passing rate 100%, effectively preventing electrical leakage and short circuit, ensuring safe operation in high-voltage scenarios.
✔ Wide Temperature Adaptability – Stable operation at -40°C~+85°C, suitable for extreme low-temperature and high-temperature industrial working conditions, with strong environmental adaptability.
✔ Extended Mating Service Life – 500 mating cycles after strict durability testing, ensuring stable performance during long-term frequent plugging and use.
Detailed Specifications of a 3-pin circular power connector
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Versatile Applications of 3-pin circular connectors
| Material and spec |  |
| Number of contact | 3+PE |
| Contact diameter(mm) | Ø2 |
| Rated voltage(AC.V) | 400 |
| Rated current(A) | 16 |
| Wire size(mm²/AWG) | ≤2.5/14 |
| Termination | Screw |
| Test voltage(AC.V)1min | 2000 |
| Insulation resistance(MΩ) | 2000 |
| Shell material | Nylon66,fire resistance:V-0 |
| Contact material | Brass with gold plating |
| Temperature range | -40℃~+85℃ |
| Mating cycle | 500 |
Superior Advantages of a Circular Connector 3-Pin
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FAQs about 3-pin circular connector
Weipu WA22 Series Industrial Connectors with 3+PE Contacts
What is the significance of the 2000V AC test voltage (1min)?
The 2000V AC test voltage (1min) is an important indicator to verify the insulation performance of the connector. It means that the connector can withstand the test of 2000V AC voltage for 1 minute without breakdown or leakage. This indicator ensures that the connector can operate safely and reliably in high-voltage scenarios, avoiding electrical safety hazards caused by poor insulation.
Can the WA22 Series be used in high-humidity environments?
Yes. The Nylon66 shell of the WA22 Series has good moisture resistance, and the product has high insulation resistance (2000MΩ), which can effectively prevent electrical leakage caused by humidity. It can be used in high-humidity industrial environments, but it should be avoided to be used in environments with direct water immersion (without additional waterproof measures).
What precautions should be taken for screw termination?
When performing screw termination, first strip the cable insulation layer according to the specified length to avoid excessive or insufficient stripping; second, use a torque screwdriver to tighten the screws to ensure appropriate tightness (neither too loose nor too tight, which may damage the contacts or cables); finally, check whether the cable is firmly fixed after installation to avoid connection failure caused by vibration.
What is the function of the 3+PE contact configuration?
The 3+PE contact configuration includes 3 contacts for transmitting power or signals and 1 PE (protective earth) contact. The PE contact is connected to the equipment shell and the earth, forming a protective earth loop. When the equipment has electrical leakage, the leakage current can be quickly discharged to the earth through the PE contact, avoiding electric shock hazards to operators and protecting the safety of equipment and personnel.
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