GIC MJ PTC Thermistor Relay

The PTC Thermistor Relay is designed to monitor and protect motors and alternators equipped with PTC thermistor sensors embedded in stator windings. By directly measuring winding temperature, the relay detects overheating conditions early and disconnects the motor before damage occurs. This provides reliable protection in demanding operating environments.

With multiple reset options and clear LED status indicators, the relay provides dependable motor protection while allowing flexible system control. Its compact DIN rail or base mounting design makes it ideal for industrial control panels.

Key Specifications

• Sensor Type: 3 PTC sensors in series (DIN 44081 / DIN 44082)
• Output Contacts: 1 C/O or 2 C/O relay output
• Contact Rating: 5A @ 250 VAC / 28 VDC
• Mounting: DIN Rail or Base Mount
• Dimensions: 22.5 × 83 × 100.5 mm
• Compliance: CE, RoHS compliant

Key Features

• Direct motor temperature monitoring using PTC thermistor sensors
• Protects motors from overheating and thermal damage
• Suitable for heavy-duty loads and high switching frequency applications
• Reliable protection under high ambient temperature or insufficient cooling
• LED indications for healthy status, sensor open, and sensor short conditions
• Multiple reset modes: Auto, Manual, and Remote reset
• Available with 1 C/O or 2 C/O relay output configurations
• Compact DIN rail or base mount design for control panel installation

The PTC Thermistor Relay provides dependable thermal protection for motors and rotating equipment by directly monitoring winding temperature through embedded PTC sensors. With flexible reset options, clear status indication, and robust industrial design, it offers a reliable solution for safeguarding motors in demanding industrial automation environments.