Overview
The Schneider Electric TC-4111 is a two-position, single-stage remote bulb thermostat manufactured by Invensys/Barber Colman. Built for on-off control of media temperature in ducts, tanks, and liquid lines, this TC Series thermostat features a two-position single-stage design and operates within a -40 to 120°F range. This used unit is fully tested and provides simple, dependable temperature management for HVAC systems and Building Automation Systems (BAS).
Key Features
- Remote bulb thermostat with SPDT (single-pole double-throw) electrical switch
- Includes an 8-inch capillary for flexible sensing element placement
- Adjustable differential ranging from 3 to 16 degrees, factory set at 3 degrees Fahrenheit
- Liquid-filled copper sensing element with coded screw terminal connections
- NEMA 1 rated enclosure for indoor industrial use
- Single-stage operation ideal for simple on-off heating or cooling control
Technical Specifications
- Temperature range: -40 to 120°F (-40 to 49°C)
- Setpoint adjustment: Full -40 to 120°F range
- Differential: 3 to 16°F (factory set ~3°F)
- Capillary length: 6 feet copper (standard configuration)
- Bulb: 3/8″ × 4″ liquid-filled copper
- Electrical switch: SPDT
- Voltage rating: 24 to 240 VAC
- Sensing element: Liquid-filled copper
- Enclosure rating: NEMA 1
- Weight: Approximately 1.5 lbs
Typical Applications
- HVAC duct temperature monitoring and control
- Hot water tank and thermal storage temperature regulation
- Liquid line temperature management in refrigeration systems
- Building Automation Systems (BAS) for single-stage heating or cooling
- Industrial process fluid temperature control
- Remote temperature sensing in confined or distant locations
Compatibility & Replacements
Compatible With
- HVAC heating and cooling systems
- Building Automation Systems (BAS) with single-stage control logic
- 24 VAC and 240 VAC control circuits
- Standard SPDT relay configurations
- Industrial temperature control applications
Replaces / Drop-In Replacement For
- HYDK-21B and HYDK-22B (direct replacements)
- TC-210, TC-391, TC-392
- PTC-4111 and L6018 (alternate part numbers)
Works With
- Simple on-off relay logic controllers
- HVAC control panels and thermostats
- 24-240 VAC single-stage control systems
- Pneumatic and electric HVAC actuators
- Standard building automation platforms supporting binary switching
