• Ambient air temperature: The upper limit of ambient air temperature is +40°C, the lower limit is -5°C, and the average temperature within 24 hours shall not exceed +35°C.
• Altitude: The altitude of the installation location shall not exceed 2000m.
• Atmospheric conditions: The relative humidity of the atmosphere shall not exceed 50% when the maximum ambient temperature is +40°C, and higher relative humidity is allowed at lower temperatures (e.g., up to 90% at +20°C). Special measures shall be taken against condensation occasionally caused by temperature changes.
• Pollution degree: Pollution degree is 2.
• Installation category: Installation category is IV.
• Installation inclination: The product is fixedly installed in the cabinet, with a maximum inclination of ±22 .5°.
| Product Model | YCQ7B-63 |
| Compliance Standard | IEC 60947-6-1 |
| Rated Operational Voltage (V) | AC 400V/50Hz |
| Rated Insulation Voltage (V) | 500 |
| Impulse Withstand Voltage (KV) | 4 |
| Pole Number | 3P/4P |
| Utilization Category | AC-33iB |
| Contact Transfer Time (s) | 0.45±50% |
| Transfer Action Time (s) | 0.9±20% - 1.3±10% (Type B, C, D) |
| Return Time (s) | 0.9±20% - 1.3±10% (Type B, C, D) |
| Power-of Time (s) | 0.45±50% |
| Rated short-circuit making capacity 9.18kA | 9.2kA |
| Rated making and breaking capacity | 6kA |
| Electrical Class | CB Class |
| Protection Characteristics | Overload Protection/Short Circuit Protection |
| Installation Method | Vertical Fixed Installation |
| Wiring Method | Screw Wiring |
| Operation Mode | Automatic/Manual |
| EMC Environment | Environment B |
| Insulation Stripping Length Before Conductor Insertion into Terminal (mm) | 11 |
| Maximum Number of Conductors Allowed to Be Clamped | 1 |
| Protection Level | IP20 |
| Screw Tightening Torque (N·m) | 2.5 |
| Screw Breaking Torque (N·m) | 3 |
| Delay Time Range (s) | Fixed (Type B, C); 0~30s Gear Adjustable (Type D) |
| Power Supply Voltage Deviation Range (V) | 160±10% |
| Normal Operating Range | 85%Ue~110%Ue |
| Special Requirements | Normal Installation Conditions |
| Isolation Applicability | Yes |
| Switch Position | Normal (I), Of (O), Standby (II) |
| Mechanical Life | 10000 times |
| Electrical Life | 3000 times |
| Controller Type | Type A | Type B | Type C | Type D | |
| Controller Installation Method | Integrated Type | ||||
| Rated Operating Voltage | 230V 50Hz/60Hz | ||||
| Automatic Operation |
Automatic Operation | ■ | ■ | ■ | ■ |
| Handle Operation | ■ | ■ | ■ | ■ | |
| Monitoring | Monitoring Phase | Single-phase | Three-phase | Three-phase | Three-phase |
| Monitoring Normal Undervoltage | Phase A | ■ | ■ | ■ | |
| Monitoring Normal Voltage Loss | Phase A | ■ | ■ | ■ | |
| Monitoring Normal Phase Loss | Phase A | ■ | ■ | ■ | |
| Monitoring Standby Undervoltage | Phase A | ■ | ■ | ■ | |
| Monitoring Standby Voltage Loss | Phase A | ■ | ■ | ■ | |
| Monitoring Standby Phase Loss | Phase A | ■ | ■ | ■ | |
| Generator Control | - | - | ■ | ■ | |
| Fire Signal Non-Essential Load Cutting | - | ■ | ■ | ■ | |
| Transfer Mode | Auto-switch & Auto-recovery | ■ | ■ | ■ | ■ |
| Mutual Standby | - | Customizable | Customizable | Customizable | |
| Auto-switch & Non-recovery | - | Customizable | Customizable | Customizable | |
| Grid Connection | Grid-Grid | ■ | ■ | ■ | ■ |
| Grid-Generator | - | - | ■ | ■ | |
| Display | Display Mode | Indicator Light | |||
| Normal Power Supply Status | ■ | ■ | ■ | ■ | |
| Standby Power Supply Status | ■ | ■ | ■ | ■ | |
| Normal Power Supply On/Of | ■ | ■ | ■ | ■ | |
| Standby Power Supply On/Of | ■ | ■ | ■ | ■ | |
| Manual/Auto Mode | ■ | ■ | ■ | ■ | |
| Parameter Setting |
Transfer Delay (s) | - | Fixed Delay | Fixed Delay | Adjustable Delay |
| Return Delay (s) | - | Fixed Delay | Fixed Delay | Adjustable Delay | |
| Other Functions | Fire Linkage Position Feedback | - | - | ■ | ■ |
Note: ■ indicates standard configuration; - indicates no such function
Port Wiring Explanation:
1. Terminals 101, 102, 201 and 202 are only to be connected for 3-pole products. Connect the normal neutral wire to 101 or 102 (or both simultaneously); connect the standby neutral wire to 201 or 202 (or both simultaneously). The 3-pole product will not work without the working neutral wire connected (no connection required for 4-pole products).
2. 501, 502 for Passive Fire Signal Input (Note:After fire linkage is activated, the control mode will be locked and needs to be unlocked by pressing the rocker switch Auto/Manual button).
3. 503, 504 for Optional Function:A set of dry contact signal output.
4. 801, 802, 803 for Generator Start-Stop Signal Output. 802 is the COM terminal, 803 is the generator start signal, and 801 is the generatorstop signal.
Note: The functions related to terminals 501, 502, 503, 504 and 801, 802, 803 are only available when the“Intelligent Type” product is selected.
The YCQ7B-63 Automatic Transfer Switch is used to transfer load circuits between a normal power supply and a standby power supply. It helps maintain continuous power distribution when the main power source fails or becomes abnormal.
The YCQ7B-63 ATS supports rated currents up to 63A. Available current options include 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A, making it suitable for small and medium dual power distribution systems.
Yes. The YCQ7B-63 is designed for three-phase four-wire dual power supply systems with AC 400V and 50Hz operation. It is available in 3-pole and 4-pole configurations to meet different wiring requirements.
A CB class ATS integrates circuit breaker protection functions, such as overload and short-circuit protection. A PC class ATS is mainly designed for power transfer and usually does not provide the same overcurrent protection function by itself.
YCQ7B-63 is a CB class automatic transfer switch, making it suitable for applications that require both power transfer and circuit protection.
Yes. YCQ7B-63 supports both automatic and manual operation. In automatic mode, the ATS transfers between power sources according to the power supply status. In manual mode, users can operate the switch manually when required for maintenance, testing, or emergency operation.
YCQ7B-63 provides multiple controller options, including Type A, Type B, Type C, and Type D. Different controller types support different functions such as single-phase or three-phase monitoring, generator control, fire signal non-essential load cutting, and adjustable transfer or return delay.
For Type D products, the delay time can be adjusted through coding switches. The available delay settings are 0s, 5s, 10s, 20s, and 30s. Type B and Type C products use fixed delay settings.
YCQ7B-63 is suitable for industrial facilities, commercial buildings, high-rise buildings, civil residential buildings, and other important power supply locations. It is designed for vertical fixed installation in distribution cabinets and helps improve the reliability of dual power supply systems.
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