NewTrend · DC contactor
Product overview
The NewTrend NR500A is a 500 A continuous-duty DC contactor with one normally open bridge contact, a maximum contact voltage of 80 V DC and an explicitly specified 15 V DC coil. Its cylindrical solenoid and steel mounting bracket suit battery-powered industrial vehicles and DC auxiliary power switching.
Technical selection summary
| Contactor Model | NR500A |
|---|---|
| Current (Continuous) | 500A |
| Coil Voltage | DC15V |
| Maximum Contact Voltage | DC80V |
| Contacts | 1NO |
| Construction | Bracket-mounted DC coil |
| Ingress Protection | IP50 |
Electrical and mechanical performance
| Instantaneous maxi (closing) current | 2000A, ≤1s |
|---|---|
| Insulation resistance(MΩ) | ≥100 |
| Dielectric withstand voltage | 1500V,p.f. 1min, no breakdown |
| Voltage drop on contacts(mV) | ≤80(at 100A) |
| Electric cycles (104) | ≥2 |
| Mechanical cycles (104) | ≥30 |
| DC power consumption of coil (W) | ≤10.5 |
| Temperature rise on outgoing terminal | ≤65 |
| Pickup voltage(DC) | ≤70%Ue(Positive power up) |
| Temperature rise of coil(K) | ≤85 |
| Release voltage(DC) | ≥5%Ue;≤40%Us |
| Insulation grade of enameled wire | Class B (130°C) |
| Pickup time(ms) | ≤30 |
| Material of contact | AgCuO(10)/Cu |
| Release time(ms) | ≤50 |
| Main terminal tightening torque | 8.5 N.m maximum |
| Coil lead end thickness(mm) | ≯1.2 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) |
Typical applications
- Battery supply switching for industrial electric vehicles and forklifts
- Electric winches and battery-powered material-handling equipment
- DC auxiliary supply and industrial machinery power circuits
Download complete NewTrend NR500A catalogue (PDF)
Product reference images and drawings
NR500A catalogue – Product, applications, model selection and wiring
NR500A catalogue – Full technical parameters and mounting dimensions
