Micro Male Bulkhead Connector with 4 Pins MCBH4M Brass Material

MCBH4M Micro Circular Bulkhead Connector — Overview

The MCBH4M is a 4-contact Micro Circular bulkhead subsea connector, male (pins) face, wet-mateable and rated to 10 A per contact (30 A per connector) at 7,000 m working depth. It mounts through a standard 7/16-20 UNF-2A hull penetration and is supplied with colour-coded PTFE leads for direct splicing inside the housing.

4 Contacts 600 V AC/DC 10 A per Contact 7,000 m Depth 500+ Wet Matings IP68

Key Design Features

• Wet-mateable: mate and demate in seawater; each contact carries its own moulded O-ring seal, so a single seal failure does not flood the connector.
• SubConn Compatible: identical face geometry, contact pitch and 7/16-20 UNF-2A thread, so it retrofits existing SubConn panels and harnesses without re-machining.
• Gold-plated contacts: brass UNS-C36000 contacts hold contact resistance below 0.01 Ω across the full 500-cycle life.
• 10 A per contact: rated current with a 30 A connector limit for the 4-contact shell.
• Pressure qualified: 1,400 bar mated design depth, 800 bar open face, so the face survives handling and storage unmated.
• Brass body: matched to the housing material to avoid galvanic couples; brass, 316L stainless, titanium, anodised aluminium and PEEK are available across the range.

Technical Specifications

Materials

Leads & Termination

Mating & Compatibility

Typical Applications

Multi-sensor pods, four-wire instrument links, combined power and two signal channels through one penetration.

Notes for Selection

Brass is the economical standard for protected and short-duration installations; a stainless or titanium shell can be supplied to order.