Products Description
The S Series Brass Indoor Stepped Insert Connectors is a high - performance connector, designed for power applications in automotive PCBs. Made of premium brass, it features a unique stepped insert, ensuring excellent conductivity and durability. This indoor - rated connector withstands automotive harsh conditions, offers stable connections, and integrates seamlessly with PCBs.
Greatmade Part no.: JH-ERN.2S.304.BLL
OEM part no.: ERN.2S.304.BLL

S Series Brass Indoor Stepped Insert Connectors
Compatible with a wide range of automotive electrical components and PCB designs.
Meets industry - standard requirements for automotive power and signal connection interfaces.
specification
| Product Name | Metal Socket |
| Product Type | Circular push pull connector/ Socket |
| Socket/ Receptacle | Socket/ Receptacle - Fixed Panel Front Mounted |
| Locking System | Push-pull |
| Number of Contacts Low Voltage | 4 |
| Size | 2S |
| Suggested Matching Part | FFP.2S.304.BLAL62Z |
| Product Series | S series, S-Indoor Stepped Insert |
| Rating | Indoor use within automotive enviroments |
| Rated Voltage | 500V (AC/DC) |
| Rated Current | 30A |
| Contact Resistance | ≤ 5mΩ |
| Insulation Resistance | ≥ 1000MΩ at 500V DC |
| Dielectric Withstanding Voltage | 1500V (AC) for 1 minute |
| Operating Frequency | DC - 10MHz (suitable for both power and low - frequency signal transmission) |
| Insertion Force | Insertion Force: ≤ 80N |
| Extraction Force | Extraction Force: ≥ 20N |
| Mating Cycles | Minimum 500 cycles without significant performance degradation |
| Vibration Resistance | Withstands 1.5mm amplitude, 10 - 2000Hz frequency range |
| Shock Resistance | 50G acceleration, 11ms duration |
Operating Temperature: - 40°C to + 85°C
Storage Temperature: - 50°C to + 100°C
Humidity Resistance: 10% - 95% relative humidity (non - condensing)
Ingress Protection: IP40 (protected against solid objects larger than 1.0mm)
Product Features
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Brass Build: Brass provides great conductivity, cuts power loss, and offers high strength, enduring automotive vibrations, temperature shifts, and mechanical stress.
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Stepped Insert: Precise PCB connections with accurate pin alignment, reducing misconnections and enhancing reliability.
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Indoor Use: Performs well in various indoor automotive conditions, ensuring stable operation.
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High - Current: Transfers high currents safely for power - hungry automotive parts.
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Compact: Small and light, easily fitting into space - constrained automotive PCBs.
Product Advantages
- Reliability: Brass and stepped insert design ensure long-lasting, stable connections, reducing electrical failures and maintenance.
- Efficiency: High conductivity maximizes power transfer, optimizing energy use and benefiting EVs' battery life.
- Compatibility: Meets automotive PCB needs, integrating easily with existing designs, no major re-engineering required.
- Cost - Cost-Effectiveness: Reliable performance cuts failure risks, and its long life with low maintenance saves costs.
Application Areas
- EVs: Used in battery management to control power flow and in electric drivetrains for motor power transfer.
- Hybrid Vehicles: Integrates electrical systems of engines, motors, and batteries for efficient power sharing.
- Automotive Infotainment: Powers large-screen displays and audio systems, ensuring stable signal transmission.
- ADAS: Supplies reliable power and connections for radar, cameras, and lidar, enhancing vehicle safety.

Usage Instructions
- Power Distribution: The JH-ERN.2S.304.BLL connector distributes power from vehicle sources like batteries to PCBs and components.
- Signal Transmission: It also sends control signals between PCBs, coordinating automotive systems.
- Component Interconnection: Acts as a key link, connecting electrical components to PCBs for harmonious system operation.


Company Information
As a leading manufacturer, we specialize in patient monitors and ECG accessories. Our product lineup includes SpO2 sensors, ECG/EKG cables, NIBP cuffs, temperature probes, IBP cables, connectors, and sensor kits. Additionally, we produce high - quality Plastic Pull - Push self - latching circular connectors.
All our products are crafted from top-tier materials and in strict compliance with high standards, ensuring reliability and precision for all your medical and industrial needs.
Our address
Room 101, 1st Floor, building a2, Changsha e center Phase I, 18 Xiangtai Road, Economic and Technological Development Zones, Liuyang, Hunan
Phone Number
86-731-83167851
tina@greatmade.com.cn

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