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ES103 High-Current Battery Energy Storage Connector from China Suppliers Factory – Reliable BESS Connector with UL & EN Certifications
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ES103 High-Current Battery Energy Storage Connector from China Suppliers Factory – Reliable BESS Connector with UL & EN Certifications

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The ES103 Series Battery Energy Storage Connector is an ideal solution for high-voltage positive and negative connections between battery packs, specifically designed for efficient operation in Battery Energy Storage Systems (BESS). As a top-quality battery connector manufactured in China, this product is engineered with a substantial 10.3mm diameter terminal that provides outstanding current-carrying capabilities. It supports a variety of configurations, including 250A-50mm², 280A-70mm², 330A-95mm², and 350A-120mm², catering to diverse current and wiring needs. Featuring a robust secondary lock buckle mechanism, this energy storage connector ensures quick and secure mating and unmating processes. It employs a 4-position polarized keying system to prevent mismating and improve installation reliability. As a reputable supplier, we guarantee that the ES103 connector meets international safety standards, including UL 4128 and EN 61984 (TUV), ensuring safe and effective connectivity for your energy storage systems.

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    Rated Current 250A-50mm² / 280A-70mm² / 330A-95mm² / 350A-120mm²
    Rated Voltage DC1500V
    Withstand Voltage AC 6800V
    Insulation Resistance ≥500MΩ
    Contact Resistance ≤0.3mΩ
    Temperature Rise ≤45K
    Frequently Asked Questions
    Q1: What is the rated current for different wire cross-sections?

    The rated current varies by wire size: 250A for 50mm², 280A for 70mm², 330A for 95mm², and 350A for 120mm².

    Q2: What is the rated voltage of this component?

    The rated voltage capacity is DC1500V, making it suitable for high-voltage DC applications.

    Q3: What is the withstand voltage specification?

    It features a withstand voltage rating of AC 6800V to ensure safe operation under electrical stress.

    Q4: What are the insulation and contact resistance levels?

    The insulation resistance is ≥500MΩ, while the contact resistance is kept extremely low at ≤0.3mΩ for optimal conductivity.

    Q5: What is the maximum temperature rise limits?

    The temperature rise during operation is rated at ≤45K, ensuring stable thermal performance.