1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your DIHOOL AC DC 160 Amp Circuit Breaker. Please read this manual thoroughly before use and retain it for future reference.
Image: The DIHOOL AC DC 160 Amp Circuit Breaker, a single-pole device designed for battery and UPS systems.
2. Safety Information
WARNING: Electrical work should only be performed by qualified personnel. Failure to follow these safety instructions may result in electric shock, fire, or serious injury.
- Always disconnect power before installing or servicing the circuit breaker.
- Ensure the circuit breaker rating matches the requirements of your electrical system.
- Do not operate the circuit breaker if it appears damaged.
- Wear appropriate personal protective equipment (PPE), including insulated gloves and eye protection.
- Verify all connections are secure to prevent loose contacts and overheating.
3. Product Features
The DIHOOL AC DC 160 Amp Circuit Breaker is designed for reliable circuit protection in various DC applications.
- Function: Thermal Magnetic Trip for circuit overload and short circuit protection.
- Isolation: Provides circuit isolation for safety during maintenance.
- Rated Operating Voltage: DC12-500V.
- Poles: 1P (Single Pole).
- Rated Current: 160A.
- Breaking Capacity: 15 kA Ics, 25kA Icu.
- Use Category: A.
- Mechanical Life: 6,000 Times.
- Electrical Life: 1,000 Times.
- Installation Method: Panel screw installation.
- Standard: IEC60947-2 / GB14048.2.
- Operating Temperature: -10℃ to + 50℃.
- Operating Altitude: Up to 2000 meters.
4. Setup and Installation
Follow these steps for proper installation of the circuit breaker.
- Mounting: Install the circuit breaker using the panel screw installation method. Ensure it is securely fastened in a suitable enclosure.
- Wiring: Connect the DC power source and load to the appropriate terminals. This circuit breaker is designed for DC systems and features no polarity, allowing flexible connection for DC 12V, 24V, 36V, 48V, 96V, 120V, and 240V applications.
Image: Example wiring diagram showing the circuit breaker connected between a 12V/24V battery and a power inverter, protecting the system.
Image: Close-up of the circuit breaker terminals, illustrating that there is no specific polarity requirement for DC connections across various voltages (12V-240V).
Wire Specifications: The applicable wire diameter for the terminals is 70MM² (00 AWG). The thickness of the conductive parts is 5MM, and the terminal depth is 85MM to ensure proper contact.
Image: Detailed view of the circuit breaker terminal, indicating the recommended wire diameter of 70MM² / 00AWG and a conductive part thickness of 5MM.
Image: Side profile of the circuit breaker terminal, highlighting the 85MM depth available for secure wire insertion.
For detailed dimensions, refer to the diagram below:
Image: Diagram illustrating the physical dimensions of the 1P 160A DC12V-500V thermal overload circuit breaker, including its 43MM width and 166MM height.
5. Operating Instructions
The circuit breaker features a simple ON/OFF toggle handle and a trip button.
- To Switch ON: Push the handle UP to the 'ON' position.
- To Switch OFF: Push the handle DOWN to the 'OFF' position.
- To Trip Manually: Press the RED Button. This will trip the circuit breaker, disconnecting power, regardless of whether the handle is in the ON or OFF position.
Important Note: If the circuit breaker is in a tripped state (red button extended), you may be unable to push the handle directly to the 'ON' position. First, push the handle DOWN to the 'OFF' position, then push it UP to the 'ON' position to restore power.
Image: Visual guide for operating the circuit breaker, showing how to switch ON (handle UP), switch OFF (handle DOWN), and manually trip the breaker using the red button.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of your circuit breaker.
- Visual Inspection: Periodically inspect the circuit breaker for any signs of physical damage, discoloration, or loose connections.
- Cleaning: Keep the circuit breaker free from dust and debris. Use a dry, non-abrasive cloth for cleaning. Do not use liquids or solvents.
- Connection Check: Ensure all terminal connections remain tight. Loose connections can lead to overheating and potential failure.
- Function Test: Occasionally test the trip mechanism by pressing the red button to ensure it functions correctly.
7. Troubleshooting
If you encounter issues with your circuit breaker, consider the following common scenarios:
- Circuit Breaker Trips Frequently: This indicates an overload or short circuit in the protected circuit. Investigate the connected load for faults, excessive current draw, or damaged wiring. Do not repeatedly reset a tripping breaker without identifying the cause.
- No Power After Reset: Ensure the handle is fully in the 'ON' position. If it was tripped, remember to push the handle to 'OFF' first, then 'ON'. If power still does not restore, check the power source and wiring for issues.
- Circuit Breaker is Hot: Overheating can be caused by an overload, loose connections, or an undersized breaker for the application. Immediately disconnect power and investigate.
If problems persist, consult a qualified electrician or contact DIHOOL customer support.
8. Specifications
| Specification | Value |
|---|---|
| Model | 1DHM1B-1P-160A |
| Rated Operating Voltage | DC12-500V |
| Poles | 1P |
| Rated Current | 160A |
| Breaking Capacity (Ics) | 15 kA |
| Breaking Capacity (Icu) | 25 kA |
| Use Category | A |
| Mechanical Life | 6,000 Times |
| Electrical Life | 1,000 Times |
| Installation Method | Panel screw installation |
| Standard | IEC60947-2 / GB14048.2 |
| Operating Temperature | -10℃ to + 50℃ |
| Operating Altitude | 2000 Meter |
| Applicable Wire Diameter | 70MM² / 00AWG |
| Item Weight | 0.97 Kilograms |
9. Product Overview Video
Watch this video for a visual overview of the DIHOOL circuit breaker, including its internal components and operational features.
Video: An animated demonstration showcasing the internal mechanism, assembly, and basic operational principles of the DIHOOL circuit breaker.
10. Warranty and Support
This DIHOOL circuit breaker comes with a 1-year warranty from the date of purchase, covering manufacturing defects.
For technical support, warranty claims, or any inquiries, please contact:
Manufacturer: DIHAO ELECTRIC ZHEJIANG CO., LTD.
Address: CN, 325604, zhe jiang, wen zhou shi, yue qing shi liu shi zhen shang zhai cun
Phone: +86 158 5857 9010
Email: sales@dihool.com
