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Installation & Application（安装应用） Product Description:
This product complies with YD/T 2346-2011 Technical Specifications for Automatic Reclosing Residual Current Protectors for Telecommunications and relevant circuit breaker standards. It provides protection against over/under voltage, overcurrent/short circuit, leakage current, and other power line or electrical faults. Additionally, it safeguards against surges and inductive lightning strikes. After tripping due to a fault, the device automatically detects and diagnoses the issue, and restores power by reclosing once the fault is resolved.
Suitable for single-phase AC 220V/50Hz power distribution systems, it continuously monitors voltage, overloads, short circuits, and leakage currents. Status indicators on the front panel display operational conditions and fault types, facilitating quick diagnostics for power lines and equipment.
Applications:
Ideal for critical outdoor and unattended installations, including:
Telecommunication base stations and repeaters
Satellite ground receiving stations
Microwave relay stations
"Safe City" video surveillance systems
Unattended equipment rooms
Outdoor integrated cabinets
Comprehensive access networks
Dedicated equipment enclosures
Precautions for Surge Protector Installation
Install this product in a waterproof enclosure indoors or outdoors to avoid direct exposure to rain or sunlight.
For optimal safety, pair this product with a circuit breaker during installation to ensure safer operation of electrical equipment.
If any of the four fault indicator lights turn red 3-5 seconds after power-on, it indicates a corresponding fault in the power line or equipment. Inspect the circuit immediately and resolve the issue.
During installation, wire connections must strictly follow the polarity markings on the product panel. Ensure input and output terminals are not reversed.
When performing maintenance or inspections, press the test button to disconnect the load before turning off the red power switch to ensure zero output voltage and safeguard technician safety.
Product Dimension Drawing（mm）
Product Wiring Diagram
Technical Parameters（技术参数） | Model | KCH-220 |
|---|---|
| Working Rated Voltage Un | AC 220V (50Hz) Working Voltage Range: 140V - 280V |
| Working Rated Current In | 3A, the rated current value can be modified according to customer requirements, with options such as 3A, 6A, 10A, etc. |
| Leakage Protection | Rated Leakage Operating Current: ≥ 30mA, Rated Leakage Non - Operating Current: ≤ 15mA, Leakage Protection Operating Time: Within 0.1s |
| Overvoltage Protection | Overvoltage Operating Voltage Protection Value: 270V ± 10V, Adjustable, Operating Time: 2 - 5s |
| Undervoltage Protection | Undervoltage Operating Voltage Protection Value: 154V ± 10V, Adjustable, Operating Time: 2 - 5s |
| Overload (Overcurrent) Protection | Rated Overload Operating Current: 1.15In, Operating Time: 2 - 5s |
| Short - Circuit Protection | Rated Short - Circuit Operating Current: 3In, Operating Time: Within 0.1s |
| Automatic Reclosing Function | After the overcurrent, short - circuit or leakage protection operates and disconnects for 30s, it will automatically reclosing once first. If the fault is removed, it will close successfully; if the fault is not removed, it will not close. It will delay for 15min for the second reclosing. If it still cannot close successfully, it will delay for another 15min for the third reclosing. If it is not successful, reclosing will be prohibited. After the overvoltage and undervoltage protection operate and disconnect for 30s, it will first judge. If the fault has been removed, it will close; if the fault has not been removed, it will not close. The judgment time for the second, third reclosing and reclosing prohibition is the same as that for current protection. Successful closing means that it can maintain the closing state for 5s without tripping after the closing action. |
| Lightning Protection | Nominal Discharge Current: 5kA (8/20μs), Maximum Discharge Current: 10kA (8/20μs), Voltage Protection Level: ≤ 1.2kV. According to customer requirements, the maximum discharge current can reach 20kA (8/20μs) |
| Protection Class | IP20 |
| Operating Environmental Conditions | Temperature Range: - 25°C ~ + 50°C, Humidity Range: ≤ 95%, Atmospheric Pressure: 70kPa - 106kPa |
| Product External Dimensions | 90mm×98mm×66mm |
Ordering and Model Selection（订货选型） | Product model | Product description |
|---|---|
| KCH-220/3 | Automatic Reclosing Power Protector, with a working rated current of 3A, and it can be installed on a guide rail。 |
| KCH-220/6 | Automatic Reclosing Power Protector, with a working rated current of 6A, and it can be installed on a guide rail。 |
| KCH-220/10 | Automatic Reclosing Power Protector, with a working rated current of 10A, and it can be installed on a guide rail。 |
| KCH-220/16 | Automatic Reclosing Power Protector, with a working rated current of 16A, and it can be installed on a guide rail。 |
*Please send the inquiry email containing specific product requirements (such as model, quantity, technical parameters, etc.) to the designated email address salina@kejia.com.
（请将包含具体产品需求（如型号、数量、技术参数等）的询价邮件发送至指定邮箱 salina@kejia.com）
