Straight Through 3 Way 4 Way Circular Waterproof Connector 2/3/4/5/6 Core Outdoor Cable Terminal Connector
The Triple-Port Circular Sealed Connector (also known as a 3-way T-shaped or Y-shaped round splitter, or a 3-port enclosed junction connector) is a compact, ingress-protected circular interconnection device that enables a single incoming cable to divide securely into two outgoing devices while preserving a dust-tight and watertight seal at the entire junction.
Unlike exposed screw-terminal splice boxes, its rounded molded or threaded-lock housing fitted with O-rings or gasket seals delivers a clean, code-compliant division point for exterior LED illumination, photovoltaic arrays, detectors, small motors, and field power taps without needing to route everything back to a control panel.
- Single-action branching, no enclosure required: Convert one cable run into two powered devices on location—ideal when installing a second streetlamp, camera, or detector midway along a line
- Authentic IP67/IP68 sealing (when mated): Dual O-ring plus threaded nut or molded grommet barrier blocks rain, washdown, condensation, and brief submersion
- Field-terminable or pre-molded choices: Screw-terminal and gland versions accept various cable sizes, allowing custom lengths and assembly with basic tools
- Error-prevention keying: Keyed round inserts avoid reverse polarity on LED and 24V DC loads
- Industrial-quality contacts: Gold-flashed brass or phosphor bronze with contact resistance ≤ 5 mΩ
- Broad temperature range: -40°C to +85°C standard (some variants support +105/+120°C)
- Low inventory expense: One 3-way unit replaces multiple components
| Parameter | Value |
|---|---|
| Number of poles | 2 / 3 / 4 (most common: 3-pin) |
| Rated current | 10A - 20A (3-pin power) / 4A (M12 4-pin signal) |
| Rated voltage | 300V / 600V AC (generic) / 250V (M12 A-code) |
| Protection level | IP67 standard, IP68 optional (when mated and capped) |
| Cable OD range | PG7 4-6.5mm / PG9 6-8mm / custom up to 11mm |
| Wire size | 0.5-2.5mm² (20-14 AWG) screw type |
| Contact resistance | ≤ 5 mΩ |
| Insulation resistance | ≥ 100 MΩ @ 500V DC |
| Dielectric strength | 1500-4000V AC / 1 min |
| Operating temperature | -40°C to +85°C (up to +105°C variant) |
| Housing material | PA66+GF, PBT, nickel-brass, 316SS option |
| Mating durability | ≥ 500 cycles (plastic), ≥ 2000 (LP16-class) |
| Standards | RoHS, CE, UL/CCC cable option, IEC 61076-2-101 (M12 version) |
- Round threaded coupling nut (M12×1, M16, M20) or push-lock bayonet with knurled surface
- T-shaped (inline tap) and Y-shaped (symmetrical branch) housing geometries available
- Integrated strain relief on every port (pull-out force ≥ 50N)
- PA66+GF / PBT shell, UV-resistant, UL94-V0 flammability class
- Nickel-plated brass or stainless steel option for marine environments
- Silicone / EPDM O-rings, epoxy-filled cavities on molded types
- Polarity-labeled terminals (L/N/G or 1/2/3) on screw-terminal models
vs. Metal Junction Box: 70% smaller footprint, no cover screws to corrode, no internal moisture buildup, 5-minute installation versus 20 minutes
vs. Zip-ties plus Heat Shrink: Maintains IP rating, can be reopened, visually inspectable
vs. Non-circular Rectangular Connectors: Round profile sheds water, performs better in hose-down and buried runs
vs. Two Separate Cordsets: Reduces cable waste and the number of fittings per branch point
- Outdoor LED illumination: streetlights, garden/facade/landscape lights, tunnel and bridge luminaires, LED strips in signage
- Solar and battery systems: photovoltaic string tapping, combiner box auxiliary feed, off-grid cabin branches
- Surveillance and smart city infrastructure: splitting a single PoE or DC cable to two cameras or sensor nodes
- Industrial automation: M12 3-way taps for proximity sensors, I/O devices, and control systems
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