HIITIO 500A High-Voltage DC Contactor

The HIITIO 500A High-Voltage DC Contactor (Model HCF500/800-12HC1H) is a massive, severe-duty electrical switching device engineered for ultra-high-power electric vehicle (EV) drivetrains and commercial energy storage applications. Manufactured by Zhejiang Hecheng Smart Electric Co., Ltd., this robust contactor is designed to safely manage an incredible 500 Amps of continuous current at up to 800V DC, making it an ideal main circuit breaker for large-scale battery packs.

Key Specifications:

• Category: Automotive Parts & Accessories / EV High Voltage Components / DC Contactors & Relays

• Product Type: High-Voltage Main DC Contactor

• Manufacturer: Zhejiang Hecheng Smart Electric Co., Ltd. (HIITIO)

• Model / Part Number: HCF500/800-12HC1H

• Maximum Rated Voltage: 800V DC

• Rated Continuous Current: 500A

• Coil (Control) Voltage: 12V DC

• Electrical Control Connection: Multi-wire flying harness with connector (Coil Power + Auxiliary Feedback)

• Power Terminals: Top-mounted, heavy-duty internally threaded copper contacts

• Certifications: CE, UL Recognized (cURus E528598)

Key Features:

• Ultra-High Current Handling – Built with massive internal copper contacts capable of sustaining 500A continuously, perfect for the high demands of commercial EV drivetrains and heavy-duty inverters.

• Integrated Arc Barrier – Features a prominent, raised plastic divider molded directly between the two main high-voltage copper terminals to physically prevent electrical arcing or flashover between the positive and negative sides.

• Auxiliary Feedback Circuit – The side wiring harness includes dedicated wires (often the white wires) for an auxiliary switch. This provides crucial real-time feedback to the vehicle's Battery Management System (BMS), confirming whether the main contacts are physically open or closed.

• Safe High-Voltage Switching – Hermetically sealed chamber equipped with magnetic arc blowout technology to rapidly stretch and extinguish dangerous electrical arcs when disconnecting live 800V DC loads.

• Vibration-Proof Mounting – The heavy-duty base flanges are equipped with pre-installed metal crush sleeves, allowing the unit to be bolted tightly to a chassis or battery box without cracking the plastic housing under heavy vibration.

Ideal For:

• Main battery pack contactors in commercial Electric Vehicles (EVs), transit buses, and heavy-duty electric trucks

• High-performance custom EV conversions requiring massive power delivery

• Megawatt-scale DC Fast Charging stations and EVSE infrastructure

• Grid-scale solar array (PV) inverters and high-capacity Battery Energy Storage Systems (BESS)

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