Hydrogen Technology World Expo
31 Aug 2025
Circular Connectors for Hydrogen Applications
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As one of the largest manufacturers of industrial connection technology, HARTING has a comprehensive portfolio of connectors in all common sizes and codings. The product range includes circular connectors, overmoulded cable assemblies as well as PCB connectors and panel feed throughs that can be assembled on-site.
- Introduction
- The Circular connectors are available in large number of variants for Device side, Cable side and also for Tools.
- HARTING has circular connectors with metric thread (M) as well as thread sizes in inches.
- In particular they have M8, M12, M23, 7/8“ series.
- The size and mating faces of circular connectors generally correspond to standardized thread sizes.
- In addition to the desired or available attachment size, these also result from the physical performance data such as the number and cross-section of the wires and the current carrying capacity.
- The mating faces of connectors are coded to prevent mismating.
- The coding is incorporated into the inner shape of the insulation bodies.
- Features
- Standardized sizes and mating faces provide safety.
- Coding prevents mismatching.
- Time saving by PushPull locking technology and Screw locking technology.
- Tool-free field assembly by HARAX termination technology.
- Various connection types are available, which have their benefits depending on the type and use of the connector.
- Connectors have plastic or metal housings.
- Materials
- Contacts: Copper alloy
- Inserts: Liquid crystal polymer (LCP)
- Contacts: Gold plated surface
- RoHS compliant with exemption
- Specifications
- Approvals:
- IEC 61076-2-114 (M8)
- IEC 61076-2-101, -111, -113, -109 (M12)
- IEC 61076-2-010 (PushPull)
- UL, CSA
- Series: M8, M12, M23, 7/8“
- Coding: A, B, D, K, L, P, S, Y, X
- Protection degree, IP20, IP65, IP67
- Approvals:
Application areas
- Signal and data transmission of control units and field devices (sensors, valves, I/Os, etc.) of electrolyzer and fuel cell system.
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