Modular | digital voltage and current monitoring | protection relay | 3-phase | 1-63A | 120-300VAC| DIN

Technical Specifications:

Operating Voltage: AC 120V–300V

Voltage Measurement Accuracy: ≤1% across the entire measurement range

Rated Insulation Voltage: 450V

Output Contact: 1NO (normally open)

Frequency: 50/60 Hz

Hysteresis: Overvoltage and asymmetry: 5V; Undervoltage: 5V

Delay Time in Case of Asymmetry: 10s

Protection Functions: Overvoltage; Undervoltage; Current Overload; Phase Sequence; Voltage Imbalance

Current Protection Range: 1–63A

Operating Temperature: -5°C ~ +40°C

Storage Temperature: -25°C ~ +55°C

Humidity: ≤50% at 40°C (without condensation)

Altitude: <2000 m

Protection Class: IP20

Pollution Level: 3

Electromechanical Lifespan: 100,000 cycles

Dimensions: 85 × 72 × 50 mm (height × width × depth)

Installation: DIN rail (TS35)

Control:

6 displays: L1, L2, L3 – voltage and current

SET button – menu selection

↑↓ buttons – settings adjustment

ON/OFF button – power on/off

Functions:

Automatic protection against:

Overvoltage

Undervoltage

Current overload

Incorrect phase sequence

Voltage imbalance

Adjustable activation/reset delay (1s–600s) Precise real-time voltage and current monitoring Automatic disconnection and reset according to set parameters Digital control with buttons and menu system Calibration functions for phase voltage and current

Applications:

Industrial electrical distribution cabinets

Protection system transformer stations

Automation and control systems

Generators and UPS equipment

Three-phase motor systems

Building engineering systems

Pros:

Compact DIN rail design – easy installation

Adjustable protection parameters – adaptable to various needs

Reliable control via buttons and clear display

Advanced safety features: asymmetry, phase order, overload

Long electromechanical lifespan

Cons:

Protection class IP20 – unsuitable for humid or dusty environments

Requires qualified installation

No integrated Wi-Fi or remote monitoring functions