S eries ERA 0S/1S/2S/ 3S Series Industrial Half Moon Black Nickel Socket

ERA Female Industrial Metal Circular Plug Socket

The ERA Female Industrial Metal Circular Plug Socket is a rugged, high-performance metal circular connector designed for precision electronic applications. It features stepped inserts, ensuring high-density contact layouts and compact size without compromising signal integrity.

Available in five shell sizes (00S to 3S), this socket supports a wide range of multi-pole contacts, including signal, coaxial, and thermocouple configurations. Its self-latching push pull mechanism ensures secure mating with quick disconnect capability, significantly reducing downtime in critical systems.

Constructed from chrome-plated brass, the housing offers excellent EMC shielding, mechanical durability, and resistance to vibration and corrosion—making it ideal for use in audio-visual equipment, industrial automation, instrumentation, and communications.

Our Key Advantages

• Supports single to 106 contacts, including power, signal, and coaxial options

• Available in multiple shell sizes: 00S, 0S, 1S, 2S, 3S,

• Stepped insert fitted with male and female industrial socket configurations

• Compatible with hermaphroditic female connector layouts for universal mating

• Welding and PCB (straight & angled) contact options for design flexibility

• 360-degree shielding ensures EMC protection and signal integrity

• High-density, space-saving structure ideal for quick connect socket applications

• Compatible with  S series plugs

• Excellent for industrial, automation, medical, and measurement use

• Durable circular black nickel sockets construction with precision-machined brass shell, chrome-plated for corrosion resistance

• Factory-direct supply ensures competitive price and stable lead time

• OEM & customization available, manufactured by LINKHIVE CONNECTORS CO., LTD., your trusted connector supplier

• Push-Pull self-latching system for secure and fast connection

Quality & Test Control

• In-house testing laboratory for full electrical, mechanical, and environmental verification

• 100% inspection of key parameters: insertion force, contact resistance, insulation resistance, and waterproof performance

• Each batch undergoes salt spray, vibration, and mating cycle testing

• Complies with ISO 9001 quality management standards

• Long-term durability: >5000 mating cycles verified

• Dedicated team for connector reliability and compliance validation

Diamensions

 Application Examples

Our female industrial socket and circular plug socket are widely used in:

• Medical Equipment: ECG, surgical monitors, fluidic-compatible cleanroom systems

• Industrial Automation: Robotics, motion sensors, hybrid power-signal transmission

• Test & Measurement: Field testers, oscilloscopes, durable multipole setups

• Military & Aerospace: Rugged signal sockets, secure field communication

• Broadcast & Audio: Camera links, control panels, EMI-shielded signal paths

• Scientific Instruments: Lab analyzers, radiation detectors, compact PCB integration

• EV & E-Mobility: Battery testing, fast-charge monitoring, hybrid data interfaces

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00S Sub-Miniature /0S Miniature-size /1S Small Size Series

 – ERA Female Industrial Metal Circular Plug Socket

Mode	ZRA.00S.250.CLL	ZRA.0S.302.CLL	ZRA.0S.303.CLL	ZRA.0S.304.CLL	ZRA.1S.302.CLL	ZRA.1S.303.CLL	ZRA.1S.304.CLL	ZRA.1S.305.CLL	ZRA.1S.306.CLL
Inserts
key	coaxial insert	Stepped Insert	Stepped Insert	Stepped Insert	Stepped Insert	Stepped Insert	Stepped Insert	Stepped Insert	Stepped Insert
Contacts	1 (coaxial)	2	3	4	2	3	4	5	4
Description	female industrial coaxial socket with metal circular shel	2-contact female industrial socket with metal circular housing	3-pin circular plug socket with stepped insert	4-contact female black nickel sockets with rugged shell	2-contactfemale industrial socket with robust brass shell	3-pin hermaphroditic ircular black nickel sockets	4-hermaphroditic female connector  stepped insert female socket	5-pin quick connect socket with  gold-plated contacts.	6-hermaphroditic  socket with hybrid layout for increased flexibility.
Application	compact RF signal systems, camera modules	medical probes, testing tools	portable analyzers, sensor modules	smart meters, signal control terminals	industrial robots, automation panels	aerospace instrumentation, handheld equipment	lab testing systems, measuring devices	modular equipment, B2B connector interfaces	measurement instruments, process control modules,

Medium size 2S Series 

– FFA circular push pull with stepped insert  Selection

Mode	ZRA.2S.302.CLL	ZRA.2S.303.CLL	ZRA.2S.304.CLL	ZRA.2S.305.CLL	ZRA.2S.306CLL	ZRA.2S.307.CCLL	ZRA.2S.308.CLL	ZRA.2S.310.CLL
Inserts
key	hermaphroditic female connector	hermaphroditic female connector	hermaphroditic female connector	hermaphroditic female connector	hermaphroditic female connector	hermaphroditic female connector	hermaphroditic female connector	hermaphroditic female connector
Contacts	2	3	4	5	6	7	8	10
Clamp Ø A	Ø 2.7 mm	Ø 3.2 mm	Ø 4.2 mm	Ø 5.2 mm	Ø 6.2 mm	Ø 7.2 mm	Ø 8.2 mm	Ø 8.7 mm
Description	2-contact female metal circular plug socket with stepped insert.	3-pin circular plug socket with reinforced shell and hermaphroditic insert.	4-contact female socket with push-pull locking	5-contact female connector  insert socket with high-density layout	6-contact quick connect socket for complex multi-signal transmission.	7-pin female circular socket, stepped insert design for precision alignment.	8-contact hermaphroditic socket with durable push-pull interface.	10-contact female socket, suitable for multi-channel signal input.
Application	Used in control panels, compact motor drives, and multi-sensor interfaces.	hermaphroditic socket Ideal for robotics signal channels, sensor-actuator networks,	Applied in automation modules, test benches, and instrumentation relays.	For use in industrial diagnostics, control panels, and modular instruments.	Widely used in factory machinery, signal control units, and interface hubs.	Ideal for rugged signal systems and industrial automation environments.	Designed for ruggedized sensor clusters, panel connections,	Used in measurement controllers, programmable systems

Large size 3S Series 

– FFA circular push pull with stepped insert Selection

Mode	ZRA.3S.302.CLL	ZRA.3S.304.CLL	ZRA.3S.305.CLL	ZRA.3S.306.CLL	ZRA.3S.307.CLL	ZRA.3S.308.CLL	ZRA.3S.310.CLL	ZRA.3S.312.CLL	ZRA.3S.313.CLL	ZRA.3S.314.CLL	ZRA.3S.316.CLL	ZRA.3S.318.CLL
Inserts
key	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket	half moon socket
Contacts	2	4	5	6	7	8	10	12	13	14	16	18
Description	2-pin circular black nickel sockets	4-pin circular plug socket with reinforced shell	5-contact hermaphroditic socket  with push-pull locking	6-pin hermaphroditic socket with high-density signal	7-contact female socket with secure mating system.	8-contact quick connect socket with circular layout.	10-pin female circular black nickel sockets with large contact area.	12-contact circular plug socket for high signal density connections.	13-pin hermaphroditic socket with gold-plated contacts	14-contact hermaphroditic socket	16-pin circular plug socket	18-contact metal socket with push-pull locking system.
Application	Used in high-power sensor modules and low-pin count rugged interfaces.	Applied in smart power systems, field relay devices	Suitable for automated platforms, integrated control boxes,	Used in telecom signal clusters, smart sensors, and automation interfaces.	Ideal for high-reliability industrial sockets in harsh environments.	For use in intelligent data acquisition systems, control racks,	Applied in military-grade interfaces, programmable control panels	Used in multi-channel test stations, precision instruments	deal for robotics clusters, motion control hubs, and custom wiring interfaces.	For advanced data distribution, I/O expansion, and multi-signal routing	Used in lab automation, precision testing, and compact control matrices	Ideal for control cabinets, dense signal environments, and equipment backplanes.

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Product Main Performance

• Type: Fixed socket, nut fixing

• Part Number Coding: ZRA 1S 306 CLA 52

• Shell Material: Chrome-plated brass

• Insulation Material: PPS / PEEK / PTFE / PPSU

• Maximum Humidity: ≤95%（at 60°C / 140°F）

• Shielding Performance: 75 dB（10 MHz），40 dB（1 GHz）

• Salt Spray Corrosion Resistance: 96 hours

• Operating Temperature Range: 200°C ~ -40°C

• IP Rating: IP50 when mated

• Shock Resistance: 100 g, 6 ms

• Vibration Resistance: 15 g（10Hz–2000Hz）

• Durability (Mating Cycles): ≥5000

• Insert Configuration: 306

• Contact Diameter: 0.7 mm

• Contact Resistance: 6.5 mΩ

• Rated Current: 7 A

• Dielectric Withstanding Voltage (Contact-Contact): 1450 V

• Dielectric Withstanding Voltage (Contact-Shell): 1000 V

• Insulation Resistance: ≥5000 MΩ（600V DC）

• Gender: Socket

Alignment key 

Panel Cutouts

Cable Clamp 

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Linkhive S Series Metal Housing Models

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