Tuya Smart WiFi RS485 Leakage Circuit Breaker AC230V/400V
Tuya Smart WiFi RS485 Leakage Circuit Breaker AC230V/400V
Tuya Smart WiFi + RS485 Metering Leakage Circuit Breaker | AC230V/400V | Remote Control with Undervoltage Protection
Take full control of your electrical system from anywhere with the Tuya Smart WiFi + RS485 Metering Leakage Circuit Breaker. Designed for both residential and commercial applications, this intelligent circuit breaker combines earth leakage protection, real-time energy metering, and dual-communication remote control into a single DIN-rail-mounted unit. Whether you need to monitor power consumption, set protective thresholds, or switch circuits remotely, this breaker delivers professional-grade performance with smart-home convenience.
Made in Mainland China.
Key Features
- Dual Communication — WiFi + RS485: Remote switching, closing, and parameter configuration via the Tuya Smart app or RS485 Modbus protocol for seamless integration with building automation systems.
- Remote Lock / Unlock: Maintenance lockout can be engaged or released remotely, plus a physical mechanical lock for added safety.
- Undervoltage Protection: Configurable undervoltage trip threshold (AC 140–190 V) with adjustable delay (0.5 s–6 s) and optional voltage-loss trip that prevents manual reclosure until conditions normalize.
- Overvoltage Protection: Configurable overvoltage action value (AC 240–300 V) with automatic recovery at AC 220–250 V.
- Earth Leakage Protection: Continuously monitors leakage current and trips to protect people and equipment.
- Real-Time Metering: Reads live voltage, current, leakage current, temperature, and power values — all viewable in the Tuya app.
- Manual / Automatic Mode: Choose automatic reclosure after fault clearance (closes within 3 s) or manual-only mode for complete operator control.
- High Breaking Capacity: Rated breaking capacity Ics 6,000 A for reliable fault interruption.
- Handles Up to 440 V Overpressure (N-L): Operates reliably under transient overpressure without damage.
Technical Specifications
| Rated Operating Voltage | AC 230 V / 400 V |
| Frame Grade Current | 125 A |
| Rated Current (In) | 10 A, 32 A, 40 A, 50 A, 63 A |
| Breaking Capacity (Ics) | 6,000 A |
| Mechanical Life | 10,000 operations |
| Electrical Life | 6,000 operations |
| Overvoltage Action Range | AC 240–300 V (recovery: AC 220–250 V) |
| Undervoltage Action Range | AC 140–190 V (recovery: AC 170–220 V) |
| Undervoltage Delay | 0.5 s – 6 s (adjustable) |
| Wiring | Clamp terminals, up to 35 mm² wire cross-section |
| DIN Rail | 35.5 × 75 mm standard guide rail |
| RS485 Baud Rate | 9,600 bps; address range 1–247 |
| Origin | Mainland China |
What's in the Box
- 1 × Tuya Smart WiFi + RS485 Metering Leakage Circuit Breaker
Important Notes
- Colours may vary slightly from product images due to display settings and lighting conditions.
- Please allow 1 mm–1 cm dimensional variance due to manual measurement.
- Installation should be performed by a qualified electrician in accordance with local electrical codes and safety standards. For guidance on electrical safety standards, refer to OSHA Electrical Safety Standards.
Frequently Asked Questions
Q: What communication protocols does this smart circuit breaker support?
A: This circuit breaker supports both WiFi (via the Tuya Smart app) and RS485 Modbus communication. WiFi enables smartphone-based remote switching and monitoring, while RS485 (Baud rate 9,600, address range 1–247) allows integration into industrial control panels and building management systems.
Q: Can the breaker automatically reclose after a trip event?
A: Yes — when set to Automatic Mode, the breaker will automatically reclose within 3 seconds after a trip event once no faults are detected. In Manual Mode, the circuit cannot be reclosed automatically; operator action is required. This setting is configurable remotely via the Tuya app or RS485 commands.
Q: What wire sizes are compatible with the clamp terminals?
A: The clamp-style wiring terminals accept conductor cross-sections up to 35 mm², making them suitable for the full rated current range (10 A to 63 A) typically used in residential distribution boards and light commercial panels.
Q: Is this breaker compatible with standard DIN rails?
A: Yes. The breaker mounts on a 35.5 × 75 mm standard DIN guide rail, which is the most common rail format used in residential, commercial, and industrial electrical enclosures worldwide.
Q: What parameters can I monitor remotely through the Tuya app?
A: Via the Tuya Smart app, you can view real-time voltage, current, leakage current, temperature, and power consumption. The metering function also allows you to track energy usage over time, making it ideal for cost management and consumption analysis.