Main Features
[Advanced Type B Residual Current Protection] Detects AC, pulsating DC, smooth DC and complex residual currents generated by modern power electronic systems.
[WiFi Remote Circuit Management] Monitor circuit status and manage supported functions remotely through the connected smart platform.
[Automatic Reclosing] Automatically attempts to restore power after a trip when safe operating conditions return.
[Designed for EV PV UPS and Drives] Suitable for advanced applications where smooth DC and complex residual currents may occur.
[Professional Smart Protection Solution] Combines Type B residual current detection, WiFi connectivity and automatic reclosing for modern electrical systems.
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| Product Type | Standard Type B RCD | Type B RCD + Auto Recloser | Type B RCD + Wi-Fi Auto Recloser |
| Model Name | TORD4B | TOSAR+RD4B | TOSAR1+RD4B |
| Type B Protection | ✓ | ✓ | ✓ |
| Poles | 2P/4P | 2P/4P | 2P/4P |
| Residual Current | 30/100/300mA | 30/100/300mA | 30/100/300mA |
| Auto Reclosing | / | ✓ | ✓ |
| Remote Control | / | / | ✓ |
| App Control | / | / | Tuya/Smart Life |
| Best For | Standard Electrical Protection | Unattended / Automatic Recovery | Remote Management & Automatic Recovery |
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TYPE B AC DC SENSITIVE PROTECTION: Detects sinusoidal AC, pulsating DC and smooth DC residual currents generated by power electronic systems where standard Type AC or Type A RCDs may not provide suitable protection.
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FOR EV PV AND INDUSTRIAL SYSTEMS: Designed for applications requiring Type B residual current protection, including EV charging equipment, solar PV inverters, VFD motor drives, UPS systems and industrial machinery.
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2P AND 4P CONFIGURATIONS: Available for single phase 1P+N and three phase 3P+N systems with rated current and residual current options for different project requirements.
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WIFI CONTROL AND AUTOMATIC RECLOSING: Provides Smart Life remote ON and OFF control through 2.4GHz WiFi and performs up to three automatic reclosing attempts at 30 second intervals.
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REQUIRES UPSTREAM OVERCURRENT PROTECTION: This Type B RCCB set provides residual current protection but does not independently protect against overload or short circuits. Install a suitable upstream MCB or fuse and evaluate automatic restart safety for the connected EV, PV or industrial equipment.
| Item | TOSAR1-RD4B |
| Product Type | Wi-Fi Auto Recloser RCD RCCB |
| Standard | IEC/EN 61008-1 |
| Leakage Type | Type B |
| Leakage current value | 30mA, 100mA, 300mA |
| Rated Voltage | 2p:230V~ 4p:400V~ |
| Rated Current | 40A, 63A |
| Reclosing Time Interval | 30s-30s-30s |
| Reclosing Cycle | 3 |
| Electrical Life | 10000 |
| Communication Protocol | 2.4GhZ Wi-Fi |
| APP | TUYA SMART LIFE |
| Smart Function | Remote Control |
| Manufacturer | Changyou Technology |
| Brand | Chayo |
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