Versatile and rugged LMH circular connectors from Weald Electronics

Applications include industrial equipment, factory automation, communications systems, tactical vehicles and defence systems.

Our LMH Range circular connectors are MIL-DTL-26482 Series 1 derived miniature bayonet locking connectors manufactured to meet the requirements of BS9522 F0017, BS/CECC 75201-003 and MIL-DTL-26482 military specification. This “Commercial Off The Shelf’ (COTS) connector offers added features such as PCB contacts, plating options and EMC grounding-fingers, while optional coarse ribbed coupling nuts on free connectors enable operation when using protective clothing.

The LMH connector series is suitable for applications such as industrial equipment, factory automation, communications systems, tactical vehicles and defence systems. Operating temperature range is -55°C to +125°C and the connectors have gold plated, non-removable, solder or PCB type contacts. This extremely versatile connector family can be supplied in 9 shell sizes and 25 shell styles and offers very cost-effective performance for the number of possible connection pins.

Connector shells are manufactured from aluminium alloy. The standard shell has a high resistance to corrosion with an olive drab chromate conversion over cadmium plate finish, alternative plating finishes including ROHS compliant versions can be easily specified. Inserts are of polychloroprene, compounded to a WEALD specification.

LMH connectors may be polarised by varying the insert positions within the shell to avoid mis-mating with similar connectors when mounted adjacently, this provides up to four additional orientations other than Normal (N), designated W, X, Y, Z.  Additionally, up to four different shell keyways can be specified other than normal (N), designated B, C, E and F, where the insert orientation will be in the Normal (N) position.

To satisfy electromagnetic compatibility (EMC) and electromagnetic pulse (EMP) requirements, free shells can be fitted with grounding fingers and fixed and free shells can be fitted with accessories for screened cable termination. The standard LMH range of accessories feature endbell adaptors, standard and long-length cable clamps, J-sealing glands and metal protective caps. Weald Electronics also manufacture compatible backshells and accessories to further compliment the LMH connector series, such as the LMA19D backshell which provides 360 degree screen termination and heatshrink boot sealing and our LMD7000 series of metal dust caps which can be specified and quickly assembled with a multitude of lanyard styles.

Key features include:

• Designed to meet the requirements of MIL-DTL-26482 series 1 and Patt. 105
• Intermateable with VG95328 spec. connectors
• Bayonet locking, multipin circular connectors
• 2 to 61 solder contacts
• Current rating up to 45A
• Operating Temp -55°C to +125°C
• Up to 1500V DC or AC peak working voltage
• Moisture and corrosion resistant
• Many shell styles, sizes and contact arrangements
• Weald can supply free shells with grounding fingers
• Plating finishes including RoHS compliant available
• Endbell adaptors, cable clamps, J sealing glands and protective caps
• PCB contacts available in various lengths and diameters
• 360° screen termination option for EMI protection
• Manufactured to IECQ-CECC spec BS/CECC 75201-003 & BS 9522 F0017