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JOHNSON CONTROLS A19AAF-12C Indoor Single-Stage Control - Indoor Single-Stage Controls
JOHNSON CONTROLSIndoor Single-Stage Controls

JOHNSON CONTROLS A19AAF-12C Indoor Single-Stage Control

The JOHNSON CONTROLS A19AAF-12C is an indoor single-stage line-voltage mechanical thermostat with a fixed 3.5°F differential and a temperature control range of 25° to 225°F. It features a SPDT switch action…

SKU 3G-OTH-68169

Also listed as: A19AAF12C · A19AAF 12C

Brand
JOHNSON CONTROLS
Item
A19AAF-12C Indoor Single-Stage Control
Part Number
A19AAF-12C
Category
Indoor Single-Stage Controls
Available to Order
Also known as:A19AAF-12CJOHNSON CONTROLS
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
A19AAF-12C
Type
Steel, Fixed, 3.5°F
AC Volt
24 to 277V
Voltage
24 to 277V AC
Differential Type
Fixed
Enclosure Material
Steel
Switch Type/Action
SPDT, Open/Close on Rise
Temperature Differential
3.5°F
Temperature Control Range
25° to 225°F
Capillary Length/Bulb Diameter
10 ft Capillary, 3 in x 3/8 in Bulb

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

Product Description

The JOHNSON CONTROLS A19AAF-12C is an indoor single-stage line-voltage mechanical thermostat with a fixed 3.5°F differential and a temperature control range of 25° to 225°F. It features a SPDT switch action (open/close on rise), operates on 24 to 277V AC, and includes a 10 ft capillary with a 3 in x 3/8 in bulb in a steel enclosure.

Frequently Asked Questions

What is the JOHNSON CONTROLS A19AAF-12C thermostat used for?

The JOHNSON CONTROLS A19AAF-12C is a line-voltage mechanical thermostat used for indoor single-stage temperature control in HVAC and industrial processes. It is suitable for applications requiring a fixed 3.5°F differential and a temperature range of 25° to 225°F, such as duct or immersion sensing.

What are the specifications of the JOHNSON CONTROLS A19AAF-12C?

The A19AAF-12C has a SPDT switch action (open/close on rise), a temperature control range of 25° to 225°F, a fixed 3.5°F differential, and operates on 24 to 277V AC. It includes a 10 ft capillary with a 3 in x 3/8 in bulb and a steel enclosure.

Where to buy the JOHNSON CONTROLS A19AAF-12C worldwide?

3G Electric supplies the JOHNSON CONTROLS A19AAF-12C 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 mechanical thermostat.

How to install the JOHNSON CONTROLS A19AAF-12C thermostat?

Mount the steel enclosure securely in a dry indoor location. Route the 10 ft capillary and bulb to the sensing point, ensuring the bulb is fully immersed or in good thermal contact. Connect the SPDT switch per the wiring diagram for 24 to 277V AC. Verify open/close on rise action before commissioning.

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
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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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Mechanical thermostat with steel enclosure, SPDT switch action (open/close on rise), and fixed 3°F differential. Temperature control range -30° to 100°F, operates at 120 to 277V AC. Includes 2 ft capillary with 3 in x 3/8 in bulb. Suitable for indoor temperature control in HVAC and industrial environments
JOHNSON CONTROLS
Mechanical thermostat with steel enclosure, SPDT switch action (open/close on rise), and fixed 3°F differential. Temperature control range -30° to 100°F, operates at 120 to 277V AC. Includes 2 ft capillary with 3 in x 3/8 in bulb. Suitable for indoor temperature control in HVAC and industrial environments

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