1200A High Voltage DC Contactor, 9-36V Coil Voltage

Hot sale 1200A high voltage DC contactor has a 9-36 coil voltage, NO main contact form, non-polarity, and NO or NC auxiliary contact, widely used in new energy vehicles, energy storage and photovoltaic systems, DC charging stations, and industrial, rail transportation, etc.

Features

• 1200A DC contactor adopts high-strength epoxy resin sealing with nitrogen-based gas filling, eliminating arc leakage risks, preventing contact oxidation, and ensuring safe operation without fire or explosion during its service life.
• It provides reliable performance with 1200A continuous current at 85℃, IP67 contact protection, insulation resistance up to 100MΩ (1000V DC), and dielectric strength of 3.5kV between contacts and coil.
• High voltage DC contactor meets IEC 60664-1, GB/T14048.1, GB/T14048.4 standards, complies with RoHS (2015/863/EU) and REACH (1907/2006/EC), and is certified by CE, CCC, and RoHS.

Specifications

Dimensions (Unit: mm)

Without Auxiliary Contact

With Auxiliary Contact

Wiring Diagram

Note: A1&A2 main terminals with non-polarity; 3&4 auxiliary contact terminals; 1&2 coil terminals 9-36V.

Applications

High voltage DC contactors are widely applied in electric vehicles (EVs), renewable energy systems (solar and wind), energy storage systems (ESS), DC charging stations, uninterruptible power supplies (UPS), and industrial equipment that requires safe and reliable DC switching.

Tips: Why can’t an AC contactor replace a DC contactor?

AC and DC currents behave very differently when a circuit is opened. In AC systems, the current naturally falls to zero 50 or 60 times per second. This “zero crossing” helps extinguish the arc that forms between the contacts. That is why an AC contactor can safely disconnect current with a relatively simple design.

DC current, however, flows continuously in one direction without any zero crossings. When the contacts open, the arc that forms is much stronger and does not die out naturally. If an AC contactor is used in a DC circuit, the arc may persist, overheat the device, weld the contacts together, or even cause fire.

Therefore, a DC contactor—especially at high current levels like 1200A—must use special designs, such as sealed chambers with insulating gas, magnetic blowouts, or arc-splitting structures, to ensure safe operation.