Modular | Digital Voltage Control | Protection | Phase Sequence Imbalance Relay | 3F | 1-63A | 230-300V | DIN | Tomzn

Main Features:

Adjustable surge protection (230V–300V)
Adjustable undervoltage protection (140V–210V)
Adjustable overload protection 1A–63A
Phase imbalance protection (deviation 20V–99V)
Phase sequence protection – protects equipment from incorrect phase sequence
Activation and automatic reset time adjustment
Manual voltage and current calibration
Bi-directional control mode (SYN/ASY) – phases can be controlled together or separately
Digital display and button control
Technical Specifications:

Rated voltage: 3×230V
Rated current: 1–63A
Mounting: DIN rail
Surge protection: 230V–300V
Surge recovery limit: 220V–295V
Surge disconnect delay: 0.1–30 s
Undervoltage protection: 140V–210V
Undervoltage recovery limit: 145V–215V
Undervoltage disconnect delay: 0.1–30 s
Phase imbalance protection: 20V–99V
Phase imbalance recovery limit: 15V–94V
Phase sequence protection: ON/OFF
Overload protection: 1–63A
Overload recovery delay: 1–500 s
Overload disconnect delay: 0.1–30 s
Current deviation limit: -9.5%–9.5%
Continuous overload setting: 1–20 times or off
Operating temperature: -25°C ~ +55°C
Operating modes: SYN (synchronous) / ASY (asynchronous)
Application: This protection relay is designed for:

Industrial electrical networks – to protect factory and workshop equipment from electrical fluctuations
Commercial premises – to protect office and shopping center electrical systems
Residential homes – to stabilize power supply and prevent voltage spikes
Automation and control panels – to ensure reliable power supply for sensitive equipment
Pros:

Network monitoring and protection – guards against surges, voltage drops, overloads, and phase issues
Accurate adjustable parameters – customizable for various electrical networks
Bi-directional operation mode (SYN/ASY) – allows for synchronous or asynchronous operation
Easy installation – mounts on DIN rail
Digital display – clear measurement visualization
Cons:

Requires proper configuration – improper setup may cause frequent power disconnects
Not suitable for single-phase networks – designed only for three-phase systems
Does not have power changing functionality – the device only switches and protects equipment, but does not change voltage or frequency
The adjustable three-phase protection relay is an intelligent solution designed to protect electrical systems from fluctuations and overloads. It provides complete network monitoring, adjustable protection limits, and bi-directional control mode (SYN/ASY), making it suitable for various applications.

This reliable and smart relay is designed for both industrial and residential electrical systems, ensuring high levels of safety and efficiency.