HIITIO 40A High-Voltage DC Contactor

The HIITIO 40A High-Voltage DC Contactor (Model HCF40/450-12HC1) is a highly compact, robust electrical switching device engineered for auxiliary high-voltage circuits in electric vehicles (EVs) and renewable energy systems. Manufactured by Zhejiang Hecheng Smart Electric Co., Ltd., this space-saving contactor is designed to safely manage up to 450V DC and a continuous current of 40 Amps, making it an excellent choice for switching secondary high-voltage loads.

Key Specifications:

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

• Product Type: High-Voltage Auxiliary DC Contactor

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

• Model / Part Number: HCF40/450-12HC1

• Maximum Rated Voltage: 450V DC

• Rated Continuous Current: 40A

• Coil (Control) Voltage: 12V DC

• Electrical Control Connection: Detachable 2-pin side connector with flying leads (Red/Black)

• Power Terminals: Top-mounted internally threaded copper contacts

• Certifications: CE, UL Recognized (cURus E528598)

Key Features:

• Safe Auxiliary Switching – Specifically engineered for lower-current, high-voltage applications. The internal contact chamber is sealed to safely extinguish electrical arcs when disconnecting live DC circuits.

• Physical Arc Barrier – Features a molded plastic divider protruding directly between the two main high-voltage copper terminals. This barrier physically prevents high-voltage flashover or arcing across the top of the unit in tight enclosures.

• Plug-and-Play Control – Operates on standard 12V automotive logic. It features a convenient, detachable side plug with red and black flying leads, making it incredibly easy to wire into a vehicle's control unit or Battery Management System (BMS).

• Compact Power Density – Its highly space-efficient rectangular footprint allows it to be easily packaged inside cramped High-Voltage Power Distribution Units (HV-PDU).

• 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 without cracking the plastic housing under vibration.

Ideal For:

• EV PTC (Positive Temperature Coefficient) cabin heaters and high-voltage AC compressors

• EV high-voltage auxiliary power distribution units (PDU)

• Pre-charge circuits for larger main battery contactors

• Small-scale solar array (PV) inverters and Battery Energy Storage Systems (BESS)

• Custom Hot Rod EV conversions needing reliable auxiliary switching