top of page
Cobalt Series Cable, Single-ended

Cobalt Series Cable, Single-ended


Polyurethane-jacketed cable with Cobalt Series plug and locking sleeve on one end.  For use with Cobalt Series Bulkhead Connector (sold separately).  Rated to 600 m depth.  1-pin*, 3-pin, 3-pin Power, 4-pin, 6-pin, 6-pin Hybrid, and 8-pin versions available, with standard 1-meter length or custom lengths from 0.1 to 2.0 meters.


How to specify length:


  • Cables shorter than 1 meter - No extra charge.  Choose the "1m or less" option and specify the length in the "Custom length" field. We will shorten the cable for you free of charge.
  • 1-meter cables - Our standard cable length is 1 meter.  Choose the "1m or less" option and leave the "Custom length" field blank.
  • Cables longer than 1 meter - Cable lengths greater than 1 meter cost $20 extra.  Choose the "Custom: >1m up to 2.0m" option and specify the length in the "Custom length" field.



SKUs: COB-1231-SS COB-123C-SS COB-123P1-SS COB-123PC-SS COB-1241-SS COB-124C-SS COB-1261-SS COB-126C-SS COB-126H1-R1 COB-126HC-R1 COB-1281-R1 COB-128C-R1


*For 1-pin cables, see the Specialty Cobalt Connectors and Cables page.

Cobalt Series dry-mate underwater connectors and cables from Blue Trail Engineering set a new standard for small waterproof connectors.  Cobalt connectors offer the same reliability as larger subsea connectors, but at a fraction of the cost.  With 316 stainless steel shells and PEEK inserts, they withstand long-term use in seawater at depths up to 600 meters.  In spite of their compact size, Cobalt connectors can handle high currents.  Connector shells are keyed and feature a scoop-proof design, allowing them to be mated blind with no possibility of pin damage.


Cobalt connectors achieve a hermetic seal without the need for potting or overmolding, making them more affordable than traditional molded connectors.  The electrical contacts are pressed into a machined PEEK insert, which is in turn pressed into the stainless steel connector shell.


In addition to reducing cost, the unique design of Cobalt connectors increases their reliability.  Without a bonded rubber overmold, there is no danger of leakage due to cathodic delamination.  A simple, proven O-ring seal between the male and female connectors makes Cobalt connectors both easier to use and more reliable than wet-mate connectors.


Perfect for space-limited applications, Cobalt connectors take up a fraction of the volume of the industry-standard Micro-Circular connectors.


Stock connectors and cables typically ship in 2-3 days.  Custom items or large orders ship in 1-2 weeks.


Cobalt cables are available in 1-pin*, 3-pin, 3-pin power, 4-pin, 6-pin, 6-pin hybrid, and 8-pin versions.  Cables are supplied with a standard cable length of 1 meter or custom lengths up to 2 meters.


COBALT CABLES MUST BE USED WITH COBALT BULKHEAD CONNECTORS (sold separately).  The Cobalt bulkhead connector fits in the same 10-mm hole as Blue Robotics penetrators, making quick-connect and quick-disconnect possible with Blue Robotics enclosures, thrusters, lights, grippers, and other accessories.


*For 1-pin cables, see the Specialty Cobalt Connectors and Cables page.

bottom of page