Basler Electric MOC2499 Motor Operator Control Potentiometer

The Basler Electric MOC2499 (part number 9072300430) is a precision potentiometer designed for use in motor operator control circuits for circuit breakers, tap changers, and switchgear. It provides a variable resistance that translates mechanical position into an electrical signal, enabling precise control of motor speed, torque, or position feedback. This component is commonly used in Basler Electric motor operator assemblies and is available as a replacement or spare part.

Construction and Material

The potentiometer features a rugged, sealed construction with a conductive plastic element for smooth, low‑noise operation. It has a mechanical rotation angle of 300 degrees (typical) with a total resistance of 5 kΩ or 10 kΩ (depending on configuration). The shaft is designed for panel mounting with a standard 6 mm diameter and includes a flat or slotted end for knob attachment. Terminals are solder‑lug or PCB‑mount type, ensuring secure connections.

Electrical Characteristics

Resistance tolerance: ±5%. Power rating: 0.5 W at 70°C. Maximum voltage: 250 VAC/DC. Linearity: better than ±1%. Operating temperature: –25°C to +85°C. The potentiometer offers a long rotational life of 1 million cycles, maintaining consistent performance over time.

Applications

This potentiometer is used in motor‑operated circuit breakers, automatic transfer switches, and voltage regulator drive mechanisms. It provides feedback for position sensing or serves as a manual adjustment for speed control. It is also used in test equipment and industrial control panels where a rugged, reliable potentiometer is required.

Installation and Replacement

Replacement involves disconnecting the wiring from the old potentiometer, noting the terminal connections, and removing the mounting nut. Install the new unit in the same panel hole, secure with the nut, and reconnect the wires. After replacement, verify the output signal with a multimeter and adjust the mechanical stop if needed. No additional calibration is usually required.

Reliability and Quality

Basler Electric selects high‑grade materials and precision manufacturing processes to ensure the MOC2499 meets demanding industrial standards. Each unit is tested for resistance accuracy, insulation resistance, and mechanical endurance. The sealed design prevents ingress of dust and moisture, enhancing longevity.

Conclusion

The Basler Electric MOC2499 motor operator control potentiometer is a reliable, precision component that ensures smooth and accurate control of motor‑operated switchgear. Its robust construction and long life make it a trusted choice for maintenance and repair applications.