
Siemens Building Technology 134-1084 Thermostat
The Siemens 134-1084 Thermostat is a heavy-duty line voltage room thermostat designed for high-performance control of 120/240 VAC heating and cooling systems. Built around a reliable bimetal thermometer, this SPDT (Single-Pole, Double-Throw) controller is ideal for commercial and industrial HVAC automation where direct-wire switching is required. It features a broad 40-90°F setpoint range and integrated high and low limit stops, allowing technicians to lock in specific temperature parameters to prevent system misuse and maximize energy efficiency. The unit is versatile for field installation, supporting both concealed and exposed setpoint adjustments through the included 134-034 blank faceplate.
Engineered for rugged environments, the Siemens 134-1084 handles resistive loads up to 10 Amps at 120V and provides precise thermal regulation with a tight switching differential—approximately 1.8°F for heating and 2.3°F for cooling. This SPDT mechanical thermostat enables seamless control of year-round air conditioning units and electric baseboard heaters without requiring an external transformer or additional relays. Whether you are replacing a legacy Powers Controls ET 134 or installing a new line voltage t-stat no switch configuration, this unit delivers the mechanical reliability required for mission-critical environmental control.
Key Benefits- Dual-Voltage Compatibility: Operates on 120 or 240 VAC, making it a standard choice for 120v/240v line voltage heating and cooling loads.
- Tamper-Resistant Configuration: Includes a blank faceplate to convert from exposed knob adjustment to concealed setpoint adjustment, essential for sensitive industrial zones.
- Precision Control: Features adjustable high and low limit stops to maintain tight operational ranges and protect equipment.
- No External Power Required: This mechanical bimetal thermostat requires no batteries or C-wire, ensuring simplified wiring for contractors.
Is the Siemens 134-1084 compatible with both heating and cooling?
Yes, the SPDT switch action allows this thermostat to control either heating, cooling, or changeover applications in conjunction with line voltage HVAC equipment.
What is the maximum load rating for this thermostat?
The unit is rated for 10A resistive at 120V and 6.0A Full Load Amperage (FLA) at 120V (3.0A at 240V), suitable for light-to-medium duty fan coils and electric heaters.
How do I switch the unit to concealed mode?
To convert to concealed adjustment, remove the thermostat cover, pull off the knob, and install the provided 134-034 blank faceplate using the included Allen wrench tools.
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.
Siemens Building Technology 134-1084 Thermostat
The Siemens 134-1084 Thermostat is a heavy-duty line voltage room thermostat designed for high-performance control of 120/240 VAC heating and cooling systems. Built around a reliable bimetal thermometer, this SPDT (Single-Pole, Double-Throw) controller is ideal for commercial and industrial HVAC automation where direct-wire switching is required. It features a broad 40-90°F setpoint range and integrated high and low limit stops, allowing technicians to lock in specific temperature parameters to prevent system misuse and maximize energy efficiency. The unit is versatile for field installation, supporting both concealed and exposed setpoint adjustments through the included 134-034 blank faceplate.
Engineered for rugged environments, the Siemens 134-1084 handles resistive loads up to 10 Amps at 120V and provides precise thermal regulation with a tight switching differential—approximately 1.8°F for heating and 2.3°F for cooling. This SPDT mechanical thermostat enables seamless control of year-round air conditioning units and electric baseboard heaters without requiring an external transformer or additional relays. Whether you are replacing a legacy Powers Controls ET 134 or installing a new line voltage t-stat no switch configuration, this unit delivers the mechanical reliability required for mission-critical environmental control.
Key Benefits- Dual-Voltage Compatibility: Operates on 120 or 240 VAC, making it a standard choice for 120v/240v line voltage heating and cooling loads.
- Tamper-Resistant Configuration: Includes a blank faceplate to convert from exposed knob adjustment to concealed setpoint adjustment, essential for sensitive industrial zones.
- Precision Control: Features adjustable high and low limit stops to maintain tight operational ranges and protect equipment.
- No External Power Required: This mechanical bimetal thermostat requires no batteries or C-wire, ensuring simplified wiring for contractors.
Is the Siemens 134-1084 compatible with both heating and cooling?
Yes, the SPDT switch action allows this thermostat to control either heating, cooling, or changeover applications in conjunction with line voltage HVAC equipment.
What is the maximum load rating for this thermostat?
The unit is rated for 10A resistive at 120V and 6.0A Full Load Amperage (FLA) at 120V (3.0A at 240V), suitable for light-to-medium duty fan coils and electric heaters.
How do I switch the unit to concealed mode?
To convert to concealed adjustment, remove the thermostat cover, pull off the knob, and install the provided 134-034 blank faceplate using the included Allen wrench tools.
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.
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Description
The Siemens 134-1084 Thermostat is a heavy-duty line voltage room thermostat designed for high-performance control of 120/240 VAC heating and cooling systems. Built around a reliable bimetal thermometer, this SPDT (Single-Pole, Double-Throw) controller is ideal for commercial and industrial HVAC automation where direct-wire switching is required. It features a broad 40-90°F setpoint range and integrated high and low limit stops, allowing technicians to lock in specific temperature parameters to prevent system misuse and maximize energy efficiency. The unit is versatile for field installation, supporting both concealed and exposed setpoint adjustments through the included 134-034 blank faceplate.
Engineered for rugged environments, the Siemens 134-1084 handles resistive loads up to 10 Amps at 120V and provides precise thermal regulation with a tight switching differential—approximately 1.8°F for heating and 2.3°F for cooling. This SPDT mechanical thermostat enables seamless control of year-round air conditioning units and electric baseboard heaters without requiring an external transformer or additional relays. Whether you are replacing a legacy Powers Controls ET 134 or installing a new line voltage t-stat no switch configuration, this unit delivers the mechanical reliability required for mission-critical environmental control.
Key Benefits- Dual-Voltage Compatibility: Operates on 120 or 240 VAC, making it a standard choice for 120v/240v line voltage heating and cooling loads.
- Tamper-Resistant Configuration: Includes a blank faceplate to convert from exposed knob adjustment to concealed setpoint adjustment, essential for sensitive industrial zones.
- Precision Control: Features adjustable high and low limit stops to maintain tight operational ranges and protect equipment.
- No External Power Required: This mechanical bimetal thermostat requires no batteries or C-wire, ensuring simplified wiring for contractors.
Is the Siemens 134-1084 compatible with both heating and cooling?
Yes, the SPDT switch action allows this thermostat to control either heating, cooling, or changeover applications in conjunction with line voltage HVAC equipment.
What is the maximum load rating for this thermostat?
The unit is rated for 10A resistive at 120V and 6.0A Full Load Amperage (FLA) at 120V (3.0A at 240V), suitable for light-to-medium duty fan coils and electric heaters.
How do I switch the unit to concealed mode?
To convert to concealed adjustment, remove the thermostat cover, pull off the knob, and install the provided 134-034 blank faceplate using the included Allen wrench tools.
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.












