Resideo Braukmann t775b2040 Electronic Temperature Controller 2 Sensor Inputs 4 Spdt Relays Replaces T775A1027 T775B1018

Product Description

The RESIDEO BRAUKMANN T775B2040 is a commercial-grade electronic remote temperature controller built for demanding HVAC, agricultural, and building automation applications. It accepts 2 independent temperature sensor inputs and provides 4 SPDT relay outputs, giving installers and controls technicians flexible on/off and switching control over a wide range of loads. The unit operates on 24 Vac or 120/240 Vac power at 50 or 60 Hz, making it compatible with a broad range of commercial electrical systems. With a setpoint temperature range of -40 F to 248 F and accuracy of plus or minus 1 degree F at 77 F, this controller delivers the precision that commercial refrigeration, heating, ventilation, and process control systems demand. The T775B2040 is housed in a NEMA 1 enclosure and features a large graphical display with an intuitive programming interface that reduces installation and commissioning time in the field. A built-in time clock scheduler and digital input allow technicians to program setback and disable output functions directly, cutting energy costs without external devices. The minimum off-time feature protects compressors and other cycling equipment from short cycling damage, eliminating the need for a separate time delay relay. For modulating control applications, proportional-integral-derivative (PI or PID) settings are configurable for precise output tuning. The controller supports floating outputs on select configurations and can be set up with reset control in just a few steps. Sensor connections can run up to 1,000 feet from the controller, supporting large commercial buildings, greenhouses, and remote mechanical rooms. The 1097-ohm PTC sensor element at 77 F ensures stable, repeatable readings across the full operating range. One sensor (50021579-001) is included. The T775B2040 directly replaces T775A1027, T775A1035, T775B1018, T775B1026, and T775B1042 models, making it a reliable upgrade path for legacy installations.

• Accepts 2 independent temperature sensor inputs with up to 1,000 feet of sensor wire distance
• 4 SPDT relay outputs rated for 24 Vac, 120 Vac, and 240 Vac loads including motor and pilot duty applications
• Built-in time clock scheduler, minimum off-time protection, and PI or PID modulating control in a NEMA 1 enclosure

Product Highlights

The T775B2040 combines multi-input temperature sensing, flexible relay switching, and advanced programming features into a single NEMA 1 controller suited for commercial HVAC, refrigeration, and agricultural controls. It replaces multiple legacy T775 models and ships with a sensor included for immediate installation.

Product Information

Standard Information

• Brand: RESIDEO BRAUKMANN
• Manufacturer Part Number: T775B2040

Technical Specifications

• Application: Electronic remote temperature on/off or analog controller
• Enclosure Type: NEMA 1
• Relay Outputs: 4 SPDT
• Floating Outputs: 2
• Number of Sensor Inputs: 2
• Voltage: 24 Vac or 120/240 Vac
• Frequency: 50 Hz and 60 Hz
• Relay Contact Rating at 24 Vac: 10.0 A resistive
• Relay Contact Rating at 120 Vac: 1/2 hp, 9.8 AFL, 58.8 ALR, 125 VA pilot duty
• Relay Contact Rating at 240 Vac: 1/2 hp, 4.9 AFL, 29.4 ALR, 125 VA pilot duty
• Height: 8.15625 inches
• Width: 4.40625 inches
• Depth: 2.9375 inches
• Sensor Element: 1097 ohm PTC at 77 F
• Maximum Distance to Sensor: Up to 1,000 feet
• Setpoint Temperature Range: -40 F to 248 F
• Accuracy: Plus or minus 1 F at 77 F
• Differential Temperature Range: 1 F to 150 F
• Ambient Operating Temperature at 60 Hz: -40 F to 140 F
• Ambient Operating Temperature at 50 Hz: -40 F to 125 F
• Sensor Included: 50021579-001
• Replaces: T775A1027, T775A1035, T775B1018, T775B1026, T775B1042