Description
Quality DC contactor provides a short-term 150A load, 12V/24V/36V/48V/60V/72V coil voltage, and normally open contact form, designed for applications, such as hydraulic power units, electric forklifts, and electric haul trucks etc.
Features
- The DC contactor supports a short-term 150A load, features one normally open contact, and has a coil power consumption of ≤22W.
- It provides an insulation resistance of 100MΩ (1000VDC), a dielectric strength of 2kV between contacts and coil, and an IP67 protection rating.
- 150A DC contactor complies with IEC 60664-1, GB/T14048.1, and GB/T14048.4 standards, meets RoHS (2015/863/EU) and REACH (1907/2006/EC) requirements, and is CE certified.
Specifications
| Model | ATO-ADD-150I | |
| Performance Parameter (at 23℃) | ||
| Contact Arrangement | 1K(1NO) | |
| Contact Resistance | ≤5mΩ | |
| Contact Voltage Drop | ≤80mV (at 80A) | |
| Overload Current | ≤7le,>1s | |
| Temperature | -40℃~55℃ | |
| Load Terminal | M6 External Thread | |
| Vibration | 3.5g,10~200Hz,1/2 Sine Wave (Power On) | |
| Relative Humidity | 5%~95%RH | |
| Dimension | 62.5x61x67.8mm | |
| Operating Duty | Intermittent | |
| Electrical Durability with Load (Resistive) | ≥50,000 times(48V/150A) | |
| Load Wiring Torque | 6-8N.m | |
| Pickup Voltage | 70%Us | |
| Dropout Voltage | 5%-40%Us | |
| Contact Bounce Period | ≤5ms | |
| Pickup Time | ≤20ms | |
| Dropout Time | ≤10ms | |
| Dielectric Strength | Between Main Contacts | 50Hz/60Hz 1500V AC/1min |
| Between Main Contacts and Coil | 50Hz/60Hz 1500V AC/1min | |
| Insulation Resistance | Initial State | 100MΩ 1min |
| After Electrical Life | 50MΩ 1min | |
| Shock | Stability | 20g(Power On) |
| Strength | 50g | |
| Mechanical Durability | ≥100,000 times | |
| Coil Wiring Torque | 1.2-2.0N.m |
Coil Parameter
| Coil Voltage | Pickup Voltage (VDC) | Dropout Voltage (VDC) | Coil Resistance | Coil Power Consumption |
| 12V | ≤70%Us | 5-40%Us | 6Ω±10% | 24W±10% |
| 24V | ≤70%Us | 5-40%Us | 24Ω±10% | 24W±10% |
| 36v | ≤70%Us | 5-40%Us | 54Ω±10% | 24W±10% |
| 48V | ≤70%Us | 5-40%Us | 96Ω±10% | 24W±10% |
| 60V | ≤70%Us | 5-40%Us | 150Ω±10% | 24W±10% |
| 72V | ≤70%Us | 5-40%Us | 216Ω±10% | 24W±10% |
Dimensions (Unit: mm)
Side Cambered Installation
Side Flat Mounting
Vertical Bottom Mounting
Wiring Diagram
Applications
ATO 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: Can relays replace DC contactors?
Relays generally cannot replace DC contactors in high-voltage or high-current DC circuits.
- Current & Voltage: Relays handle low currents and low voltage; DC contactors handle high currents and high voltage safely.
- Arcing: DC contactors are designed to extinguish arcs in DC circuits; relays usually are not.
- Durability: DC contactors have longer mechanical and electrical life under heavy DC load.
- Safety: Using a relay instead of a DC contactor can cause contact welding or failure.
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