1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the UOFKIPBA SEV3600ADXL High Voltage DC Contactor. Please read this manual thoroughly before using the product and retain it for future reference. This device is designed for controlling high voltage DC circuits, commonly found in applications such as charging piles and industrial electrical systems.
2. Safety Information
WARNING: Electrical shock hazard. Only qualified personnel should install, operate, or service this device. Failure to follow these instructions can result in serious injury or death.
- Always disconnect power before installing or servicing the contactor.
- Ensure proper grounding and wiring according to local and national electrical codes.
- Do not exceed the specified voltage and current ratings.
- Protect the device from moisture, dust, and extreme temperatures.
- Verify all connections are secure before applying power.
3. Product Overview
The UOFKIPBA SEV3600ADXL is a high-performance DC contactor designed for reliable switching of high voltage direct current. It features robust construction suitable for demanding industrial environments.

Image showing a UOFKIPBA high voltage DC contactor. This representative image displays two main terminals with nuts and washers for power connections, and a label indicating 'SAYOON', 'SEV600AHXL', 'Coil Voltage: 12V-24V DC', and 'Rated Current: 600A'. The actual product is SEV3600ADXL with a 24V coil.
Key components include the main power terminals for connecting the high voltage DC load and the coil terminals for controlling the contactor's state (energized/de-energized).
4. Specifications
| Parameter | Value |
|---|---|
| Brand | UOFKIPBA |
| Model | SEV3600ADXL |
| Coil Voltage | 24V DC |
| Rated Current | 600A (Typical for series) |
| Item Weight | 1.76 ounces |
| Package Dimensions | 1.18 x 0.79 x 0.39 inches |
| ASIN | B0CZHRBYDN |
| First Available Date | March 30, 2024 |
5. Setup and Installation
Follow these steps for proper installation:
- Mounting: Securely mount the contactor in a stable, vibration-free location, ensuring adequate ventilation.
- Power Wiring: Connect the high voltage DC power source to the main terminals (typically marked + and - or A1 and A2 for the main contacts). Ensure correct polarity and use appropriately sized cables for the rated current.
- Control Wiring: Connect the 24V DC control voltage to the coil terminals. Observe correct polarity if specified on the device.
- Verification: Double-check all wiring connections for tightness and correctness before applying any power.
6. Operating Instructions
The contactor operates by energizing its coil:
- To Close Contacts (Energize): Apply the specified 24V DC control voltage to the coil terminals. The contactor will audibly click as the main contacts close, establishing the high voltage DC circuit.
- To Open Contacts (De-energize): Remove the 24V DC control voltage from the coil terminals. The contactor will audibly click as the main contacts open, breaking the high voltage DC circuit.
Ensure that the control circuit is stable and provides the correct voltage to prevent erratic operation.
7. Maintenance
Regular maintenance helps ensure optimal performance and longevity:
- Visual Inspection: Periodically inspect the contactor for any signs of physical damage, discoloration, or loose connections.
- Terminal Tightness: Check and tighten all terminal screws as necessary, especially after initial installation and during routine maintenance.
- Cleaning: Keep the contactor free from dust and debris. Use a dry, non-conductive cloth for cleaning. Do not use solvents.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Contactor does not energize | No control voltage; incorrect control voltage; faulty coil; loose wiring. | Verify 24V DC control voltage at coil terminals; check wiring connections; replace contactor if coil is faulty. |
| Contactor hums or chatters | Insufficient control voltage; mechanical obstruction; foreign material. | Ensure stable 24V DC control voltage; inspect for obstructions; clean contactor. |
| Overheating | Overcurrent; poor ventilation; loose connections. | Check load current against rating; improve ventilation; tighten all connections. |
If issues persist after troubleshooting, contact a qualified electrician or technical support.
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact UOFKIPBA customer service through their official channels. Keep your purchase receipt as proof of purchase.