Thermistor GEKO C00152 for MMA-200 / MMA-220 welding machines

Replacement thermistor GEKO C00152 designed for use in MMA-200 and MMA-220 welding machines. This temperature-sensitive resistor functions as a monitoring and protection element inside the inverter unit, providing temperature feedback to control circuits and helping prevent overheating of internal components. Intended for service, repair, and preventive maintenance of compatible MMA inverter welders, the thermistor restores temperature sensing capability and supports reliable machine operation when installed correctly.

Advantages

The GEKO thermistor is a compact, passive component that offers stable temperature-dependent resistance characteristics for accurate sensing within the welding unit. It is compatible with the specified MMA-200 and MMA-220 models and can be easily integrated into the existing sensor location without modification. By enabling the machine’s protection circuits to detect temperature rise, it helps maintain consistent performance and reduces the risk of heat-related faults.

Suitable for

• Repair and replacement of damaged or malfunctioning temperature sensors in MMA-200 and MMA-220 welders
• Routine maintenance and preventive servicing of MMA inverter welding equipment
• Service workshops and technicians performing diagnostics and component-level repairs

Key specifications

• Type: thermistor (temperature-dependent resistor)
• Function: temperature sensing and protection input for inverter control circuits
• Application: compatible with specified MMA inverter welding models
• Form factor: compact PCB-mounted or lead-mounted component suitable for internal installation

How to use

Install the thermistor in place of the original sensor in the internal control or power module of the MMA-200 or MMA-220 welding machine, following the machine manufacturer’s service manual and safety procedures. Ensure the unit is powered off and disconnected from mains before opening the housing. Confirm correct orientation and secure mounting, reconnect any leads or solder joints as originally configured, and verify continuity and resistance values with a multimeter before full reassembly. After installation, perform a functional test at low duty to confirm the protection and temperature monitoring operate as expected.

Usage recommendations

Handle the component with appropriate ESD precautions and avoid mechanical stress on leads and solder joints. Use the thermistor only as a direct replacement for the compatible models indicated; if temperature behavior or readings remain abnormal after installation, inspect surrounding components, connectors, and the control board for faults and consult qualified service personnel.