China Nanfeng Electric
86-577-62797256 king@kingnan.com
ZJQ 300A-T DC Contactor

ZJQ 300A-T DC Contactor

The products are mainly used to control switching  on/off of power supply of storage battery car,  electric forklift, electric winch, electric car,  excavator, air conditioner in vehicle

  • ZJQ 300A-T DC Contactor
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Application

ZJQ 300A-T DC contactor for electric vehicles is used for connecting and breaking DC circuits over long distances. In the control circuit, the DC contactor uses the DC power supply to provide working conditions for its coil, thereby controlling the contact action.

Ordering Notice

For example: ZJQ300H/12V The DC contactor of main contact is  commutation, rated voltage not more than DC80V, current 300A, coil

Basic Technical Parameters (at normal conditions)
Electric Parameters
Contact type A set of NO+NC Instantaneous maxi (closing) current 7Ie,≤1s
Rated voltage of contacts (DC) ≤80V Insulation resistance(MΩ) ≥100
Rated current of contacts (A) 300 Dielectric withstand voltage 1500V,p.f. 1min, no breakdown
Voltage drop on contacts(mV) ≤80 Electric cycles (104) ≥2
Coil voltage specification(DC) 12V, 24V, 48V, 72V etc Mechanical cycles (104) ≥30
DC power consumption of coil (W) ≤11 Temperature rise on outgoing terminal ≤65
Pickup voltage(DC) ≤70%Us Temperature rise of coil(K) ≤85
Release voltage(DC) ≥5%Us;≤40%Us Insulation grade of enameled wire Class B (130°C)
Pickup time(ms) ≤50 Material of contact AgCuO(10)/Cu
Release time(ms) ≤50 Working duty Continuous operating duty
Mechanical/Ambient Conditions
Torque of outgoing 
terminal  on contact M8(N.m)
≯7.0N appropriate Protection grade IP50
Coil wiring screw M5 ≯2.5N appropriate Mounting methods Freely
Working temperature (-25~+55)°C Vibration Sine shock: 2.5g, (5~50) Hz
Mounting altitude ≤2Km Impact 50g,11ms(Half sine)
Conversion Table for Coil Specification(20°C)
Voltage(V) Coil resistance(1±10%)Ω Voltage(V) Coil resistance(1±10%)Ω
12 3.95 60 94.7
24 15.5 72 136.4
48 60.6 80 168.4

 Outline and Mounting Picture

 

Mini Circuit Breaker
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