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EKA3-TW smart relay switch Wi-Fi model product appearance white background

EKA3 Smart Relay Switch | Wi-Fi / RS485 63A

EKA3 Smart Protection Switch with over/under-voltage and over-current protection up to 63A, plus metering and timing control. Choose EKA3-TW (Wi-Fi/Tuya) or EKA3-M (RS485) for remote monitoring and threshold setting. 1P+N, 90V~265V, 50/60Hz, IP20.

● Product type: Smart Relay Switch / Smart Protection Switch
● Series: EKA3
● Models: EKA3-TW, EKA3-M
● Communication: Wi-Fi (Tuya) or RS485
● Standard: IEC 60947-5-1
● Poles: 1P+N, N pole on the left
● Rated operating current: 1–63A
● Operating voltage range: 90V~265V
● Rated frequency: 50/60Hz
● Standby power consumption: ≤ 1.5W
● Protection: over-voltage, under-voltage, over-current
● Metering function: Yes
● Control type: Remote, Manual
● Protection degree: IP20
● Terminal block protection: Integrated cover
● Ambient temperature: -20℃ to +70℃, Max. 95% humidity

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Product Profile

EKA3 Series Smart Protection Switch integrates multiple circuit protection functions such as over-voltage, under-voltage, over-current, etc., and is equipped with a timing function, designed for current working environments up to 63A. Users can remotely control the switch status, monitor electrical parameters such as voltage, current, power in real time, and set corresponding protection thresholds. EKA3 is easy to install and operate and is widely used in homes and industrial places.

Key Features

Integrated Protection: Combines over-voltage, under-voltage, and over-current protection in one device.
High Current Capacity: Suitable for environments with working currents up to 63A.
Remote Control: Allows remote on/off control via the Tuya app or RS485 platform.
Real-time Monitoring: Uses the Tuya app or RS485 platform to monitor voltage, current, and power in real-time.
Adjustable Parameters: Thresholds for main electrical parameters can be set via Tuya app or RS485 platform.
Metering Function: Provides accurate measurement of electrical parameters.
Timing Control: Improve energy management efficiency, enhance power safety.

Model lineup

EKA3-TW — Wi-Fi (Tuya) communication
EKA3-M — RS485 communication

Common platform

1P+N, N pole on the left
1–63A, 90V~265V, 50/60Hz
Over/under-voltage & over-current protection
Metering + timing control

Model Preparation Meaning

Model names are used directly as order references:

EKA3 — Series code (Smart Relay Switch)
TW — Wi-Fi (Tuya) communication version
M — RS485 communication version

Order models on this page

EKA3-TW
EKA3-M

Common platform: 1P+N (N pole on the left), rated operating current 1–63A, operating voltage 90V~265V, 50/60Hz, IEC 60947-5-1. Both models support remote and manual control, metering, and over-voltage / under-voltage / over-current protection.

Technical Data

Item	EKA3-TW	EKA3-M
Standard	IEC 60947-5-1
Overvoltage protection	✓	✓
Undervoltage protection	✓	✓
Overcurrent protection	✓	✓
Metering function	✓	✓
Power status indicator	Yes
Network status indicator	Yes
Working status indicator	Yes
Power button / Network button	two-in-one button, Yes
Communication method	Wi-Fi (Tuya)	RS485
Control type	Remote, Manual
Poles	1P+N, N pole on the left
Standby power consumption	≤ 1.5W
Operating voltage range	90V~265V
Rated frequency	50/60Hz
Rated operating current	1–63A
Voltage and current measuring accuracy	Class 1.0
Energy measurement accuracy	Class 2.0
Protection degree	IP20
Ambient temperature	-20℃ to +70℃, Max. 95% humidity
Terminal block protection	Integrated cover
Over-voltage range	230V~265V (default: 265V)	230V~300V (default: 280V)
Over-voltage recovery range	Automatic adjustment according to overvoltage protection value −5V	225V~295V (default: 275V)
Over-voltage tripping time	—	5s~600s (default: 60s)
Over-voltage recovery delay time	—	5s~600s (default: 60s)
Under-voltage range	140V~210V (default: 160V)	100V~210V (default: 115V)
Under-voltage recovery range	Automatic adjustment according to overvoltage protection value +5V	100V~215V (default: 120V)
Under-voltage tripping time	—	5s~600s (default: 60s)
Under-voltage recovery delay time	—	5s~600s (default: 60s)
Over-current adjustable range	1A–63A (default: 63A)	1A–63A (default: 63A)
Over-current tripping time	—	5s~600s (default: 5s)