PHASE FAILURE RELAY SEQUENCE PROTECT RELAY XJ3-G

Description

The XJ3-G is an industrial 3-phase monitoring and protection relay designed to protect motors and electrical equipment from phase loss, incorrect phase sequence, and voltage imbalance. It is widely used in motor control panels, pumps, compressors, HVAC systems, and industrial automation circuits to prevent damage caused by abnormal 3-phase supply conditions.

This relay continuously monitors all three phases and quickly disconnects the control circuit when a fault is detected, typically by tripping the contactor coil.

Key Features

• Protects against phase failure (single phasing)
• Detects wrong phase sequence (phase reversal protection)
• Monitors three-phase imbalance / unbalance conditions
• Fast response for motor protection in control circuits
• Works with AC 50/60Hz systems up to 380V control voltage
• DIN rail mountable for panel installation
• LED indicators for power and fault status
• High reliability for continuous industrial operation
• Simple wiring with contactor-based shutdown control
• Suitable for pump, motor, compressor, and fan protection

Specifications

• Product Type: Phase Failure & Phase Sequence Protection Relay
• Model: XJ3-G
• Control Supply Voltage: AC 380V (±10%)
• Frequency: 50 / 60 Hz
• Protection Functions:
– Phase loss detection
– Phase sequence (reverse phase) protection
– Three-phase voltage imbalance protection
• Output Contact: Relay output (1NO + 1NC typical variant)
• Response Time: ≤ 0.1–2 seconds (fault dependent)
• Mounting Type: DIN rail/panel mount
• Operating Temperature: -5°C to +50°C (typical industrial range)
• Housing: Industrial flame-retardant plastic enclosure
• Standards: IEC/EN 60947-5-1
• Application: Motor protection, pumps, compressors, HVAC systems, industrial machinery