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JOHNSON CONTROLS Line Volt Mechanical Tstat: 40° to 90°F, Steel, Fixed, 1.5°F - Indoor Single-Stage Controls
JOHNSON CONTROLSIndoor Single-Stage Controls

JOHNSON CONTROLS Line Volt Mechanical Tstat: 40° to 90°F, Steel, Fixed, 1.5°F

The JOHNSON CONTROLS A19AAF-21C is an indoor single-stage line-voltage mechanical thermostat with a fixed 1.5°F differential and a temperature control range of 40° to 90°F. It features a steel enclosure, SPDT switch…

SKU 3G-OTH-68175

Brand
JOHNSON CONTROLS
Item
Line Volt Mechanical Tstat: 40° to 90°F, Steel, Fixed, 1.5°F
Category
Indoor Single-Stage Controls
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Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
A19AAF-21C
Type
Steel, Fixed, 1.5°F
AC Volt
120 to 277V
Voltage
120 to 277V AC
Differential Type
Fixed
Enclosure Material
Steel
Switch Type/Action
SPDT, Open/Close on Rise
Temperature Differential
1.5°F
Temperature Control Range
40° to 90°F
Capillary Length/Bulb Diameter
6 ft Capillary, 5-3/4 in x 3/8 in Bulb
View Full Spec Sheet

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JOHNSON CONTROLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The JOHNSON CONTROLS A19AAF-21C is an indoor single-stage line-voltage mechanical thermostat with a fixed 1.5°F differential and a temperature control range of 40° to 90°F. It features a steel enclosure, SPDT switch action (open/close on rise), and operates on 120 to 277V AC. The unit includes a 6 ft capillary with a 5-3/4 in x 3/8 in bulb.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the JOHNSON CONTROLS A19AAF-21C thermostat used for?

The JOHNSON CONTROLS A19AAF-21C is a line-voltage mechanical thermostat used for indoor single-stage temperature control in commercial and industrial HVAC applications. It is suitable for controlling fans, heaters, or other equipment where a fixed 1.5°F differential and SPDT switching action are required.

What are the specifications of the JOHNSON CONTROLS A19AAF-21C?

The JOHNSON CONTROLS A19AAF-21C has a temperature control range of 40° to 90°F, a fixed differential of 1.5°F, and operates on 120 to 277V AC. It features SPDT switch action (open/close on rise), a steel enclosure, and includes a 6 ft capillary with a 5-3/4 in x 3/8 in bulb.

Where to buy the JOHNSON CONTROLS A19AAF-21C worldwide?

3G Electric supplies the JOHNSON CONTROLS A19AAF-21C thermostat worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this line-voltage mechanical thermostat.

How to install the JOHNSON CONTROLS A19AAF-21C thermostat?

Install the JOHNSON CONTROLS A19AAF-21C by mounting the steel enclosure in a dry indoor location. Connect the SPDT switch wiring per the voltage rating (120 to 277V AC) and position the capillary bulb in the controlled air stream. Ensure the 6 ft capillary is not kinked. Follow standard HVAC wiring practices.

Used in

Common applications for JOHNSON CONTROLS
Industrial refrigeration — Johnson Controls P170SA-1C dual pressure control for compressor protection in ammonia or halocarbon systems
Chiller plant automation — Johnson Controls VA7810-HGA-2 electric globe valve actuator for modulating chilled water flow in VG7000 series valves
Pneumatic HVAC retrofit — Johnson Controls T-4002-302 conversion kit for upgrading existing Robertshaw thermostats in commercial buildings
Cooling tower water management — Johnson Controls V-4332-1007 pneumatically actuated diaphragm valve for 3-way diverting of water flow
Boiler fuel oil pressure monitoring — Johnson Controls P545NCB-25C electronic lube oil pressure control with alarm for burner management systems
Process pressure sensing — Johnson Controls P599AAPS105C pressure transmitter with IP67 rating for washdown zones in food and beverage plants

JOHNSON CONTROLS Products

3G Electric supplies JOHNSON CONTROLS indoor single-stage controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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JOHNSON CONTROLS Line Volt Mechanical Tstat: Heat Only, Steel, 30° to 110°F, 1.5°F, 24 to 277V AC (MPN A19BAF-1C). Key specifications — attr400419: 24 to 277V AC; attr400424: SPDT, Open/Close on Rise; attr400415: 30° to 110°F; attr400417: 1.5°F; attr400418: Hydraulic Air Coil; attr400408: Heat Only; attr408361: JOHNSON CONTROLS; attr400410: Steel.
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