Main Features
[Type A Residual Current Protection] Detects AC and pulsating DC residual currents for circuits with modern electronic equipment.
[Automatic Power Restoration] The automatic reclosing function can restore the circuit after a trip when the fault condition has cleared.
[Designed for Modern Loads] Suitable for residential, commercial and equipment circuits containing electronic power supplies and controlled loads.
[Reduce Manual Reset Requirements] Helps minimise unnecessary maintenance visits for remote or unattended electrical installations.
[DIN Rail Protection Solution] Combines Type A residual current detection, automatic reclosing and standard electrical panel installation.
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| Model Name | TOSAR+RD4B | TOSAR+RD4A | TOSAR+RD4 | TOSAR+BD6 |
| Product Type | Type B RCD Auto Recloser | Type A RCD Auto Recloser | Type AC RCD Auto Recloser | Type A RCBO Auto Recloser |
| Residual Current Type | AC + Pulsating DC + Smooth DC | AC + Pulsating DC | AC | AC + Pulsating DC |
| Rated Residual Current | 30/100/300mA | 30/100/300mA | 30/100/300mA | 30mA |
| Breaking Capacity | 10kA | 6kA | 6kA | 6kA |
| Function | Auto Recloser, Leakage Protection | Auto Recloser, Leakage Protection | Auto Recloser, Leakage Protection | Auto Recloser, Leakage Protection, Short Circuit Protection |
| Best For | EV Charging, Solar & Inverter Systems | Modern Residential & Commercial Circuits | Standard AC Electrical Circuits | All-in-One Leakage & Overcurrent Protection |
Type A RCD Auto Recloser TOSAR+RD4A
TOSAR+RD4A automatic reclosing device is suitable for residential, commercial buildings and industrial facilities, especially in situations where power supply needs to be restored quickly to reduce the impact of power outages. Its automatic reclosing function can quickly restore power supply after a transient fault, reduce manual intervention, and improve the continuity and reliability of power supply.
Main Features
Automatic reclosing technology: As a Type A RCD (residual current circuit breaker), TOSAR+RD4A can automatically disconnect the circuit when residual current is detected, protecting personal safety and equipment from damage.
Flexible pole selection: Two switch types, 2-pole and 4-pole, are available to meet the needs of different electrical systems, and can be flexibly applied in both home and industrial environments.
Wide current and voltage application range: Supports rated currents from 16A to 63A, as well as line voltages of 230V/400V and phase voltages of 220V/380V, making it an ideal choice for a variety of voltage environments.
High frequency adaptability: Compatible with rated frequencies of 50Hz and 60Hz, making it suitable for power systems in different countries and regions.
High voltage resistance: With a circuit breaking capacity of 6kA, it ensures stable operation and safety protection under extreme conditions.
Durability: The electro-mechanical durability exceeds 4000 cycles, ensuring long-term stable operation and reliability of the product.
International Certification: Obtain CE certification to ensure product quality and safety and meet the requirements of the international market.
Rated residual operating current: Provide 30mA, 100mA, 300mA rated residual operating current options to meet the needs of different safety levels.
| Item Model Number | TOSAR+RD4A |
| Switch Style | Auto Recloser Type A RCD |
| Switch Type | 2 Poles/4 Poles |
| Manufacturer | Chayo |
| Rated Current (In) | 16A, 25A, 32A, 40A, 63A |
| Line Voltage Range | 230V/400V |
| Residual Current characteristic | A Type |
| Rated Frequency | 50Hz/60Hz |
| Control Type | Auto Recloser |
| Breaking capacity | 6kA |
| Model | Electromagnetic Type |
| Electro-mechanical endurance | More than 4000 cycles |
| Certificate | CE |
| Rated residual operating current | 30mA 100mA 300mA |
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