125A GB/T DC Charging Socket

Model: SCZ-125A-750V-L

EV charging inlet, for charging with direct current (DC), DC GB/T, GB/T 20234.3-2015, 125 A / 750 V (DC), wires length: customize, Front and rear mounting, Protective cap with left flap.

Main Parameter

  • +125℃

    Max operating temperature

  • -40℃

    Min operating temperature

  • 750V

    Rated voltage

  • 125A

    Rated current

  • Rated current: DC+/DC-: 125A;

  • Applicable wire diameter: 35mm², Insulation outer diameter: Φ11.0±0.3;

  • PCBA integrated design, reliable performance;

  • The low-voltage line and DC power line are assembled separately, and the assembly is simple;

  • This series supports front mount and rear mount;

Product Description

The SKZ series GB/T DC charging socket is installed on the electric vehicle and realizes the DC charging function by cooperating with the DC charging cable. The product is developed according to the IATF 16949 automotive standard and meets the requirements of GB/T 20234.3-2015 and RoHS.

Technical Data
Electrical properties
Rated current


Wire Diameter

DC+/DC-: 35mm²; 

Outer diameter: Φ11.0±0.3

Rated voltage

DC+/DC-: 750V DC,Max 1000V DC

S+/S-/A+/A-/CC2: 30V

Withstand voltage3000V AC / 1min. (DC +  DC-  PE)
Insulation resistance1000V DC≥100MΩ(DC+/DC-/PE)
Terminal temperature rise<50K
Mechanical properties
Insertion/withdrawal cycles>10,000 times
Insertion/Withdrawal force<100N
Environmental properties
Ambient temperature-40℃~+125℃
Degree of Protection


Salt spray class96h
Main material
Insulation partPA
Sealing partSilicone Rubber
Contact partCopper alloy
Mounting type Front and rear mounting (0 to 90 degree frontal inclination possible)
Mounting hole diameter6.5 mm (ø)
Fixing screwsM6

Temperature Sensor

NTC10K temperature monitoring principle:

2 temperature sensors within the DC+ and DC- terminals

Temperature sensor model: NTC R25℃=10KΩ±1%, curve coefficient B25℃/50℃=3950, allowable operating current: 2mA max.

According to the provisions of Article 9.1 of GB/T 18487.1-2015, when the charging current is >16A, the power supply socket and the vehicle socket should be equipped with a temperature monitoring device. Temperature sensors are arranged in the DC+ and DC- holes of the charging socket, and there are two temperature sensors in the DC charging socket. Customers can formulate charging strategies based on temperature feedback.

Suggested temperature control: When the temperature reaches 100°C, limit the current, and stop charging when the temperature reaches 120°C.

Reason for the requirement: GB/T20234 stipulates that the operating temperature of charging products is -30°C~+50°C, the maximum temperature rise of the terminals is 50°C, and the current should be limited when the temperature reaches 100°C to avoid continuous temperature rise. In order to avoid the aging of the internal parts and cables of the charging product under high temperature conditions, the charger should stop charging when the temperature reaches 120°C.

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