Product description
Product Description
The ZLJM-50A/27 DC contactor is designed for switching and controlling DC power circuits. It is suitable for battery-powered vehicles, electric forklifts, electric winches, electric vehicles, excavators, automotive air-conditioning systems and communication power supplies.
Key Features
- 50 A contact-switching capacity.
- Single normally open contact configuration.
- 10 W coil power consumption.
- Silver-alloy contacts for reliable switching.
- Compact design for DC electrical control systems.
- Suitable for continuous-duty operation.
- Compliant with RoHS requirements.
Technical Specifications
| Item | Specification |
|---|---|
| Model | ZLJM-50A/27 |
| Product Type | DC Contactor |
| Contact Configuration | 1H, SPST-NO |
| Contact Material | Silver alloy |
| Rated Contact Load | 50 A × 48 VDC, resistive load, DC-1 |
| Rated Coil Voltage | 27 VDC |
| Coil Power Consumption | 10 W |
| Coil Operating Voltage | 85%–110% of rated coil voltage |
| Pick-Up Voltage | 45%–70% of rated coil voltage |
| Drop-Out Voltage | 5%–40% of rated coil voltage |
| Holding Current at 27 VDC and 20°C | ≤0.35 A |
| Contact Voltage Drop | ≤80 mV at 50 A |
| Insulation Resistance | ≥100 MΩ at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 minute |
| Leakage Current During Dielectric Test | <1 mA |
| Pick-Up Time | ≤30 ms |
| Release Time | ≤30 ms |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +65°C |
| Relative Humidity | 20%–90% RH |
| Vibration Resistance | 10–200 Hz, acceleration ≤3.5 g |
| Shock Resistance | 60–100 impacts/min, acceleration ≤4 g |
| Mechanical Life | 100,000 operations without load |
| Electrical Life | 6,000 operations at rated load |
| Pollution Degree | III |
| Duty Cycle | Continuous duty |
Model Number Identification
ZLJM-50A/27
- ZLJM: Design code for a normally open DC contactor.
- 50A: Rated current of 50 A under a DC-1 resistive load.
- 27: Rated coil voltage of 27 VDC.
Example: ZLJM-50A/27 indicates a normally open DC contactor rated for a 50 A × 48 VDC resistive load, with a 27 VDC coil.
Typical Applications
- Telecommunication equipment
- Construction machinery
- Battery-powered vehicles
- Electric forklifts and winches
- Electric and hybrid vehicles
- Automotive air-conditioning systems
- Trains and marine equipment
- Uninterruptible power supplies
Drawing Note
The outline dimensions, mounting dimensions, model-identification graphics and circuit diagram use local computer image paths and cannot be extracted from the supplied text.
