• 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection

4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection

No.PST-MCB-4P
  • 4P Tuya Smart MCB for 4-pole 3-phase electrical circuit control.
  • 2.4G WiFi connectivity for stable smart home integration.
  • App remote control via TuyaSmart, SmartLife, Alexa & Google Home.
  • Flexible timing scheduling for automated power management.
  • Device sharing allows multi-user access for team or family use.
  • Safety lock prevents accidental operation and tampering.
  • IP20 protection level for dust and accidental touch resistance.
  • Compatible with AC400V, 50Hz 3-phase voltage standards.
  • Multiple current options: 16A, 20A, 25A, 32A, 40A, 63A, 80A, 100A, 125A.
  • Manual ON/OFF override with clear status indication lights.
  • DIN rail mount for easy installation in electrical panels.
  • Built-in overload and short-circuit protection up to 10000A.
  • Low-power design for 24/7 stable operation.
  • Compact 4-module size to save electrical cabinet space.
Options:
16A
20A
25A
32A
40A
63A
80A;
100A
125A
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection
  • 4P Tuya Smart MCB Switch – 4-Pole WiFi Circuit Breaker with App Control & Safety Protection

Description

PST-MCB-4P Specifications
Product Name Tuya Smart 4P WiFi MCB Circuit Breaker Switch
APP Name Tuya Smart or Smart Life
Input Voltage AC 240V/400V
Output Voltage AC 240V/400V
Number of poles 4 Poles (4P)
Rated current 16A/20A/25A/32A/40A/63A/80A/100A/125A
Rated short-circuit breaking capacity lcn=6kA lcs=6kA
Connection Type Screw terminal (copper, 25mm² wire compatible)
Applicable places 4P usually for industrial & big electrical equipment etc use
Switch mode Switch/Mobile phone
Main Functions Remote on/off control, overload protection, short-circuit protection
Current Monitoring Accuracy ±5%
Protection Degree IP20 (suitable for indoor distribution boxes)
Mechanical Life  ≥10,000 operations
Electrical Life ≥6,000 operations (at rated current)
WiFi Standards IEEE 802.11 b/n/g 2.4G Hz
Support Voice Control Work with Amazon Alexa/Google Assistance
Operation Temp. –25°C to +65°C
Humidity 5%--95% non-condensing
Box Dimension Box:10.5*12*11.6cm
Unit Weight 0.6kg
Carton Packing 36PCS per carton: 22.2kg, 47*37*33cm
PST-MCB-4P Package List
WIFI Circuit Breaker x1
User Manual x1
PST-MCB-4P Product FAQ
Q1: What does "4P" mean in the Tuya Smart 4P WiFi MCB Switch?
A: "4P" stands for 4 poles, indicating it controls four conductors (three phases + neutral), suitable for three - phase four - wire power systems.
Q2: What is the rated voltage of this circuit breaker?
A: It is suitable for a 50Hz rated voltage of AC 400V/240V, compatible with three - phase power setups.
Q3: Can I control it via my phone?
A: Yes, it can be controlled remotely via a dedicated smart home app (like Tuya Smart, Smart Life) when connected to WiFi.
Q4: Does it support voice control?
A: Yes, if connected to smart assistants like Amazon Alexa or Google Assistant, you can control the switch with voice commands.
Q5: Does it support 5GHz WiFi?
A: No, only 2.4GHz WiFi (common for Tuya smart devices).
Q6: Can multiple switches be controlled by one app?
A: Yes, the app allows you to manage multiple smart switches in one interface for centralized control.
Q7: What protection features does it have?
A: It includes overload protection (trips when current exceeds 130% of rated value with a time delay) and short-circuit protection (instant trip when current exceeds 10x rated value).
Q8: Can I set a schedule for the breaker to turn on/off automatically?
A: Yes, the timer function supports daily or weekly schedules, as well as countdown controls, to manage power usage efficiently.
Q9: What wire sizes is it compatible with?
A: It works with 1.5-6mm² wires via screw terminals, suitable for most standard household wiring.
Q10: How is it mounted?
A: It installs on a 35mm DIN rail (EN 50022 standard), common in distribution boxes for easy integration.
Q11: Can it work without WiFi?
A: Without WiFi, you can still use the touch function to control the switch locally. Remote app and voice control require WiFi.
Q12: What material is the housing made of?
A: The housing is flame-retardant PC (UL94 V0) for safety, with copper contacts for good conductivity.
Q13: How do I reset the breaker after a trip?
A: First, resolve the cause of the trip (e.g., reduce load for overloads). Then, toggle the breaker to "Off" and back to "On" manually or via the App.
Q14:  Can I share control with family members?
A: Yes, through the app, you can share device control permissions with other family members' accounts.
Q15: Can I check the operation history?
A: Yes, the App logs all on/off actions, trips, and alerts with timestamps for easy tracking of circuit activity.
Q16: What is the WiFi range of the breaker?
A: It has a wireless range of up to 30m in open areas, though walls or interference may reduce this—position your router nearby for stable connectivity.
PST-MCB-4P OEM & ODM Service
Q17. Can make OEM?
A: Yes, we can.
PID OEM:1000PCS
Box & manual OEM: 1000PCS;
Laser logo: 100PCS.