WY Series Bayonet Waterproof Circular Connectors for Test Equipment

WY Series Circular Connectors for Test and Measurement Equipment

The WY series is a metal circular connector line designed for reliable connectivity in test and measurement (T&M) equipment operating in demanding environments. With bayonet coupling for quick, vibration-resistant mating and IP55 to IP67 protection, these connectors suit benchtop instruments, portable field testers, multi-channel data acquisition systems, and industrial automation test rigs. RoHS2 compliant, they combine precision electrical performance with durable construction and flexible configurations to meet the stability and accuracy requirements of T&M applications.

Selecting the Right WY Series Shell Size

The WY series covers eight core shell sizes, categorized by panel cutout diameter from 16mm to 55mm. Each size is optimized for specific T&M signal and power needs. Larger shell sizes support higher pin counts and current ratings, enabling integration with diverse test setups:

• WY16: 16mm panel cutout, ideal for compact handheld testers and low-density signal links such as temperature sensor connections.
• WY20: 20mm panel cutout, a versatile size for mid-range T&M equipment, balancing space-saving design and multi-channel connectivity.
• WY24: 24mm panel cutout, including the WY24 Data variant (24.5mm cutout) that supports hybrid connections (LC, RJ45, USB 3.0, HDMI 2.0) for high-speed data transmission.
• WY28: 28mm panel cutout, suited for high-current T&M applications such as power supply testing, with support for larger contact diameters.
• WY32: 32mm panel cutout, designed for high-density multi-channel test rigs, balancing pin count and mechanical stability.
• WY40: 40mm panel cutout, ideal for complex test systems requiring both high-current power and multi-signal transmission.
• WY48: 48mm panel cutout, for ultra-high-density applications like semiconductor test modules and automated production line testers.
• WY55: 55mm panel cutout, the largest size for heavy-duty T&M setups, supporting maximum current and pin count.

Matching Pin Count to Your Test Scenario

Each WY series size offers 2 to 61 pin options, with pin count tailored to shell capacity. This ensures precise matching to T&M equipment requirements. Pin configurations align with common test scenarios:

• 2-10 pins: Basic sensor links and simple signal connections.
• 12-31 pins: Multi-channel data acquisition systems.
• 38-61 pins: Complex signal switching matrices and high-density test modules.

Key Performance Considerations for T&M Applications

Secure Bayonet Coupling and Anti-Vibration Design

The 120° quick bayonet locking ensures tool-free mating with audible confirmation, rated for over 500 mating cycles. The zinc alloy shell (chrome-plated) enhances structural rigidity, resisting vibration in mobile test equipment and industrial environments—critical for uninterrupted T&M operations.

Precision Electrical Performance

Gold-plated brass contacts deliver low contact resistance, minimizing signal attenuation for low-current and high-frequency testing. High insulation resistance and rated voltage prevent signal leakage, ensuring measurement accuracy. Test voltage ratings support rigorous validation.

Broad Environmental Adaptability

The operating temperature range of -40°C to +85°C, with PPS insulation for thermal stability, suits laboratory, industrial, and outdoor field testing. Protection levels from IP55 (dustproof) to IP67 (waterproof) shield against dust, moisture, and temporary water immersion.

Versatile Current Handling

Rated current ranges from 5A to 150A, depending on contact diameter and shell size. This supports both low-power signal sensors and high-current power supply testing in T&M systems.

Compliance and Durability

RoHS2 compliant, with all models undergoing factory testing for insulation, contact resistance, waterproofing, and mating durability. Compatible with matching cable glands (nylon/metal, PG/M/NPT threads) for strain relief and enhanced EMI shielding.

Why Choose WY Series for Test and Measurement?

Full Size and Model Coverage

All eight core sizes and complete plug/receptacle models are available, ensuring compatibility with existing WY-based test systems and minimizing project lead times.

Hybrid Connection Capability

The WY24 Data variant supports integrated high-speed interfaces (RJ45, USB 3.0), ideal for T&M systems requiring simultaneous power, signal, and data transmission.

Application-Tailored Accessories

Matching dust caps, anti-bending sleeves, and cable glands enhance installation reliability, adapting to diverse T&M wiring layouts from benchtop setups to field-deployed equipment.

Application Boundaries and Suitability

The WY series is well-suited for benchtop instruments, portable field testers, data acquisition systems, and industrial automation test rigs where vibration resistance and environmental sealing are required. However, for applications demanding extreme high-frequency performance beyond the rated specifications, or where continuous submersion beyond IP67 conditions is expected, verify the specific model's ratings with the manufacturer. For high-density signal acquisition on industrial test benches, consider the multi-channel signal acquisition connector guide.

Inquiry Checklist for WY Series Connectors

To ensure accurate matching, please provide the following information when inquiring:

• Required shell size (WY16 to WY55) and pin count.
• Gender (plug or receptacle) and mounting style (panel, cable, or free-hanging).
• Contact termination type (solder, crimp, or PCB).
• Cable outer diameter and required cable gland thread type (PG, M, or NPT).
• Specific electrical requirements: current, voltage, and signal type.
• Environmental conditions: IP rating needed, temperature range, and exposure to vibration or chemicals.
• Any need for hybrid data interfaces (RJ45, USB 3.0, etc.) in the WY24 Data variant.

For a broader selection of circular connectors, refer to the 12G Series Circular Connectors catalog.