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TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
Specifications
Model Number :
TC303-3A2DLS
MOQ :
5
Installationtype :
Wall-mounted or DIN-rail mounted
Brand Name :
Schneider
Compatibility :
Compatible with 2-pipe and 4-pipe fan coil units
Delivery Time :
7 Days
System Compatibility :
KNX TP1 standard protocol compatible
Controlmethod :
Electrical and Manual Override
Payment Terms :
T/T
Timer Function :
Supports scheduling and timer settings
Packaging Details :
Carton
Mounting :
DIN-rail mounting in electrical cabinet
Certification :
CE RoHS
Sensortype :
Temperature/Humidity/Occupancy
Place of Origin :
EU
Description
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat
Backlit LCD display with 3 fan speeds, 3A relay output, and key lock functionality for secure operation in public spaces.
Product Overview
The TC303-3A2DLS is a stand-alone digital fan coil thermostat from the Schneider Electric TC300 series, designed as a practical terminal unit control solution. This device replaces traditional mechanical bimetal thermostats in fan coil installations without requiring a building management system.
A microprocessor drives the control loop with setpoint displayed on a backlit LCD. The temperature measurement utilizes a 10 kOhm NTC element of the 3950 curve family, compatible with most existing fan coil sensor installations.
The 3A relay output stage provides sufficient capacity for both the fan coil's fan relay and water valve actuator, eliminating the need for interposing contactors. Additional features include three-step fan speed selection, eco function, sleep regime, and key lock for public space security.
Technical Specifications
Feature Detail
Product type Digital fan coil thermostat, stand-alone
Order number TC303-3A2DLS
Series TC300 series
Sensing element 10 kOhm NTC thermistor, 3950 curve
Accuracy ±1°C
Display Large backlit LCD, setpoint and room temperature
Fan control Three fan speeds, selectable locally
Modes Cooling, heating and ventilation
Output stage 3A relay output for fan and valve control
Extended functions Eco energy-saving mode, sleep mode, button lockout
Pipe configuration Suitable for two-pipe and four-pipe fan coil units
Compliance CE marking; RoHS and REACH declarations held by Schneider Electric
System Integration
Installation involves matching the thermostat to the terminal unit it serves by configuring fan speed count and valve arrangement (two-pipe or four-pipe) to ensure proper output sequencing.
As a direct replacement unit, existing sensor cables and valve wiring can typically be reused, minimizing downtime to a single visit per room. For public spaces, enable the key lock during handover and configure setpoint limits to maintain energy-saving specifications.
In hotel applications, eco and sleep functions are often integrated with window contacts or key-card switches to optimize energy usage in unoccupied rooms.
Application Scenarios
  • Hotel guest rooms: Simple operation for first-time occupants with tamper-resistant locking features
  • Serviced offices: Perimeter zone control for small areas where full BMS integration is disproportionate
  • Healthcare facilities: Secondary areas including waiting rooms and staff rooms, keeping critical wards on central systems
  • Residential buildings: Individual apartment units with ducted fan coil systems
  • Educational institutions: Seminar rooms and small lecture theatres with intermittent occupancy where eco functions deliver measurable energy savings
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TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock

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Product Detail
Model Number :
TC303-3A2DLS
MOQ :
5
Installationtype :
Wall-mounted or DIN-rail mounted
Brand Name :
Schneider
Compatibility :
Compatible with 2-pipe and 4-pipe fan coil units
Delivery Time :
7 Days
Contact Supplier
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock
TC303-3A2DLS Schneider TC300 Digital Fan Coil Thermostat Backlit LCD 3 Fan Speed 3A Relay Output Key Lock

Maituo Intelligent Technology Co.，Ltd

Verified Supplier
1 Years
hainan, hainan
Since 2019
Business Type :
Manufacturer, Seller, Trading Company, Exporter
Main Products :
Push Button Panel, Room Sensors, Building Controllers
Total Annual :
800000 USD-1000000
Employee Number :
50~80
Certification Level :
Verified Supplier
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