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Smart circuit breaker (day/night control) 63A double relay with Wi-Fi system – Tuya/Smart Life app | Energy meter | Earthquake protection |

Smart circuit breaker (day/night control) 63A double relay with Wi-Fi system – Tuya/Smart Life app | Energy meter | Earthquake protection |

SMFY-ND63SBT

32,000 IQD
42,000 IQD 32,000 IQD
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63A Smart Circuit Breaker with Wi-Fi – Tuya/Smart Life App (Day/Night Control) | Dual L/N Relay | Energy Meter | Earth Leakage Protection | Amperage Limit Scheduling

Brief description

A smart Wi-Fi-enabled circuit breaker with voltage, current, and power display. It utilizes Relayin technology to disconnect both the phase and neutral wires simultaneously in case of a fault, enhancing safety. Locally known as Day/Night Control , it allows for time-based amperage scheduling and automatic load switching via the Tuya/Smart Life app.

Quick glance

  • Wi-Fi 2.4GHz – Works with the Tuya/Smart Life app.
  • Double relay (separating L and N) to cut both lines together.
  • Protections: Overvoltage (OV), Undervoltage (UV), Overcurrent (OCP), and Earth Leakage .
  • Displays kWh/kW and power factor, with instantaneous measurements of voltage and current.
  • 3 timing modes: daily scheduling, countdown, periodic timing.

Example of scheduling the amperage limit (day/night)

  • 08:00 → 18:00 = 15A
  • 18:00 → 00:00 = 10A
  • 00:00 → 08:00 = 8A

Technical specifications

Item Range/Value virtual
Operating voltage AC 140–300V —
Overvoltage (OV) protection 230–300V 270V
The value of the recovery for increased effort 225–295V 265V
Low voltage (UV) protection 140–210V 170V
Recovery value for voltage drop 145–215V 175V
Overcurrent Protection (OCP) 1–63A 40A
Reconnection delay 1–500 seconds 30 seconds
Time of the verb (chapter) 0.1–30 seconds 1 second
Earth leakage 10–99mA 30mA
Number of leakage/current errors 1–20 times —
Calibration (V/I/kW) ±9.9% 0%
Mechanical/Electrical Lifespan ≥ 2,100,000 cycles
Approximate dimensions 95 × 45 × 68 mm

Quick setup

  1. Mounting on a DIN rail and connecting L/N load inlet and outlet (dual relay separates L and N).
  2. Turn on the device and press the Wi-Fi button for ~5 seconds to enter pairing mode.
  3. Open the Tuya/Smart Life app → Add device → Energy → Switch Module (Wi-Fi) → Select 2.4GHz network and enter password.
  4. Setting OV/UV/OCP/Earth Leakage limits and delay times, and creating a day/night schedule for the amperage limit.

Safety warning: Installation must be performed by a qualified electrician. Do not exceed the rated current/power and ensure all connections are secure.

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