Siemens Building Technology 141-0520 Temperature Control

The Siemens 141-0520 is a rugged, line-voltage remote bulb thermostat designed for high-accuracy temperature regulation in commercial HVACR applications. Engineered as a two-position electric controller, this unit features a single-pole, double-throw (SPDT) snap-acting switch housed in a heavy-duty gray baked enamel galvanized steel casing. With a temperature range of 20°F to 120°F and an adjustable differential of 3.5°F to 14°F, it provides precise on-off control for liquid or air temperatures in heating and cooling installations. This model serves as the direct replacement for Powers 230-22; however, technicians should verify the 6-foot capillary length to ensure proper reach to the sensing point. The liquid-filled sensing element and diaphragm mechanism provide reliable actuation of damper motor actuators, motor-actuated valves, and relays. For line voltage power switching, the 141-0520 thermostat supports up to 120/240 VAC inductive and resistive loads, making it a versatile choice for tank mounting or duct-side applications when paired with the appropriate mounting kits.

• Versatile Application: Ideal for summer-winter changeover, high/low temperature limit functions, and direct control of damper actuators or pump relays.
• Adjustable Precision: Features an adjustable temperature differential (3.5°F to 14°F) and an integral field-adjustable setpoint stop for safety and efficiency.
• Industrial Durability: The liquid-filled sensing element is housed in a steel case with a gray enamel finish to withstand demanding mechanical room environments.
• Flexible Mounting: Can be installed in any position on walls or ducts using a remote bulb holder or immersion well for liquid sensing.

• Is this compatible with the Powers 230-22? Yes, the 141-0520 is the designated successor to the Powers 230-22. Ensure the 6-foot capillary provides sufficient length for your specific installation layout.
• Can this be used for cooling applications? Yes, the SPDT switch action allows for both "close-on-rise" (cooling) and "open-on-rise" (heating) wiring configurations.
• What is the maximum bulb temperature? This unit has a maximum bulb temperature of 130°F. Operating beyond this limit may damage the sensing element.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.