Published on:2026-05-24 Click:38
Shanghai Kabel Intelligence Technology Co., Ltd Circular Series 3-pin inline and bulkhead underwater connectors. IP68, 7000m, 25A per contact. Ideal for 3-phase AC ROV thruster motors. SubConn Circular 3-contact compatible.
The 3-contact Circular Series from Shanghai Kabel Intelligence Technology Co., Ltd is the standard connector for subsea 3-phase AC thruster motor circuits. Each contact carries one phase (U/V/W) at up to 25 A. With IP68 sealing and 7,000 m depth rating, COBH3 bulkhead and COIL3 in-line connectors provide reliable, wet-mateable power connections for ROV thrusters, AUV propulsion systems, and subsea pump motors.
| Parameter | Value |
|---|---|
| Contact count | 3 |
| Available models | COBH3M, COBH3F, COIL3M, COIL3F |
| Depth rating | 7,000 m |
| IP rating | IP68 |
| Voltage | 600 V AC/DC |
| Current per contact | 25 A |
| Shell | Anodized aluminium / Titanium option |
| Insulator | PEEK |
| Hydrostatic test | 600 psig per batch |
| Compatibility | SubConn Circular 3-contact COBH/COIL |
Ground/earth is handled at the motor housing via the shell bonding or a separate earth conductor -- consult your thruster manufacturer specification.
Email: sales@rovcable.com | www.rovconnector.com
No -- with 3 contacts, all three are assigned to the 3 AC phases (U/V/W). Earth continuity for the motor housing is handled separately through the metallic shell bonding path or a dedicated earth connector. Confirm grounding strategy with your thruster OEM.
At 25 A per contact and up to 600 V, the theoretical maximum is 600V x 25A x sqrt(3) = approx. 26 kVA for a 3-phase circuit. In practice, ROV thruster connectors typically operate at 100-300 V and 5-20 A per phase, well within the rating.
