
Robertshaw 803A Cooling Stat
The Robertshaw 803A is a commercial-grade line voltage cooling thermostat engineered for high-performance temperature regulation in single-pole applications. This SPST cooling thermostat is the direct field replacement for the legacy 803 model, featuring a bimetal sensing element for rapid thermal response without the need for mercury. Designed for versatile HVAC line voltage control, it supports 120V, 240V, and 277V AC circuits, making it a standard for contractors servicing residential or light industrial cooling units. With an adjustable range of 50°F to 90°F (10°C to 32°C) and a precision accuracy of ±2°F, it ensures stable environmental conditions. The unit is J-box compatible for streamlined wall-mount installation and includes a positive "OFF" switch for a mechanical system shutdown. Whether you are performing a universal cooling thermostat retrofit or a new install, the 803A (Canadian model C803) provides the heavy-duty reliability expected in professional line voltage HVAC applications.
Key Benefits for Contractors- Universal Retrofit Compatibility: Engineered to replace most single-pole single-throw (SPST) electric cooling thermostats, reducing truck stock requirements.
- Multi-Voltage Versatility: Rated for 120V (1/4 HP), 240V (1/3 HP), and 277V AC, covering a wide range of fan coil and cooling equipment loads.
- Mercury-Free Construction: Simplifies leveling during installation and meets all modern environmental code requirements for non-mercury thermostats.
- Mechanical Reliability: The robust bimetal sensor provides consistent switching without the failure points found in complex electronic components.
- Integrated Safety: Features a positive off position, allowing for isolated maintenance and system safety during the off-season.
Is the Robertshaw 803A a direct replacement for the Robertshaw 803?
Yes, the 803A is the updated, mercury-free direct replacement for the legacy 803 series, maintaining the same mounting footprint and electrical specifications.
Can this thermostat be used for heating applications?
No, this is a cooling-only thermostat. For heating-specific applications, a dedicated 800 series heating thermostat is required to ensure proper circuit action and temperature differential.
Does this unit require a neutral wire?
As a line voltage thermostat, it switches the load directly. Wiring typically involves the "Line" and "Load" conductors; always verify your local electrical codes and circuit requirements before installation.
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.
Robertshaw 803A Cooling Stat
The Robertshaw 803A is a commercial-grade line voltage cooling thermostat engineered for high-performance temperature regulation in single-pole applications. This SPST cooling thermostat is the direct field replacement for the legacy 803 model, featuring a bimetal sensing element for rapid thermal response without the need for mercury. Designed for versatile HVAC line voltage control, it supports 120V, 240V, and 277V AC circuits, making it a standard for contractors servicing residential or light industrial cooling units. With an adjustable range of 50°F to 90°F (10°C to 32°C) and a precision accuracy of ±2°F, it ensures stable environmental conditions. The unit is J-box compatible for streamlined wall-mount installation and includes a positive "OFF" switch for a mechanical system shutdown. Whether you are performing a universal cooling thermostat retrofit or a new install, the 803A (Canadian model C803) provides the heavy-duty reliability expected in professional line voltage HVAC applications.
Key Benefits for Contractors- Universal Retrofit Compatibility: Engineered to replace most single-pole single-throw (SPST) electric cooling thermostats, reducing truck stock requirements.
- Multi-Voltage Versatility: Rated for 120V (1/4 HP), 240V (1/3 HP), and 277V AC, covering a wide range of fan coil and cooling equipment loads.
- Mercury-Free Construction: Simplifies leveling during installation and meets all modern environmental code requirements for non-mercury thermostats.
- Mechanical Reliability: The robust bimetal sensor provides consistent switching without the failure points found in complex electronic components.
- Integrated Safety: Features a positive off position, allowing for isolated maintenance and system safety during the off-season.
Is the Robertshaw 803A a direct replacement for the Robertshaw 803?
Yes, the 803A is the updated, mercury-free direct replacement for the legacy 803 series, maintaining the same mounting footprint and electrical specifications.
Can this thermostat be used for heating applications?
No, this is a cooling-only thermostat. For heating-specific applications, a dedicated 800 series heating thermostat is required to ensure proper circuit action and temperature differential.
Does this unit require a neutral wire?
As a line voltage thermostat, it switches the load directly. Wiring typically involves the "Line" and "Load" conductors; always verify your local electrical codes and circuit requirements before installation.
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 Robertshaw 803A is a commercial-grade line voltage cooling thermostat engineered for high-performance temperature regulation in single-pole applications. This SPST cooling thermostat is the direct field replacement for the legacy 803 model, featuring a bimetal sensing element for rapid thermal response without the need for mercury. Designed for versatile HVAC line voltage control, it supports 120V, 240V, and 277V AC circuits, making it a standard for contractors servicing residential or light industrial cooling units. With an adjustable range of 50°F to 90°F (10°C to 32°C) and a precision accuracy of ±2°F, it ensures stable environmental conditions. The unit is J-box compatible for streamlined wall-mount installation and includes a positive "OFF" switch for a mechanical system shutdown. Whether you are performing a universal cooling thermostat retrofit or a new install, the 803A (Canadian model C803) provides the heavy-duty reliability expected in professional line voltage HVAC applications.
Key Benefits for Contractors- Universal Retrofit Compatibility: Engineered to replace most single-pole single-throw (SPST) electric cooling thermostats, reducing truck stock requirements.
- Multi-Voltage Versatility: Rated for 120V (1/4 HP), 240V (1/3 HP), and 277V AC, covering a wide range of fan coil and cooling equipment loads.
- Mercury-Free Construction: Simplifies leveling during installation and meets all modern environmental code requirements for non-mercury thermostats.
- Mechanical Reliability: The robust bimetal sensor provides consistent switching without the failure points found in complex electronic components.
- Integrated Safety: Features a positive off position, allowing for isolated maintenance and system safety during the off-season.
Is the Robertshaw 803A a direct replacement for the Robertshaw 803?
Yes, the 803A is the updated, mercury-free direct replacement for the legacy 803 series, maintaining the same mounting footprint and electrical specifications.
Can this thermostat be used for heating applications?
No, this is a cooling-only thermostat. For heating-specific applications, a dedicated 800 series heating thermostat is required to ensure proper circuit action and temperature differential.
Does this unit require a neutral wire?
As a line voltage thermostat, it switches the load directly. Wiring typically involves the "Line" and "Load" conductors; always verify your local electrical codes and circuit requirements before installation.
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.











