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JOHNSON CONTROLSWeatherproof Two-Stage Controls

JOHNSON CONTROLS A28MA-1C Weatherproof Two-Stage Temperature Control

The JOHNSON CONTROLS A28MA-1C is a weatherproof two-stage temperature control with a steel enclosure. It features a fixed differential of 8/5°F, a temperature control range of 40° to 120°F, and operates on 24 to 277V…

SKU 3G-OTH-68901

Also listed as: A28MA1C · A28MA 1C

Brand
JOHNSON CONTROLS
Item
A28MA-1C Weatherproof Two-Stage Temperature Control
Part Number
A28MA-1C
Category
Weatherproof Two-Stage Controls
Available to Order
Also known as:A28MA-1CJOHNSON CONTROLS
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
A28MA-1C
Type
Steel, Fixed, 8/5°F
Voltage
24 to 277V AC
Differential Type
Fixed
Enclosure Material
Steel
Switch Type/Action
SPDT, Open/Close on Rise
Temperature Differential
8/5°F
Temperature Control Range
40° to 120°F
Capillary Length/Bulb Diameter
6 ft Capillary, 4 in x 3/8 in Bulb

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

Product Description

The JOHNSON CONTROLS A28MA-1C is a weatherproof two-stage temperature control with a steel enclosure. It features a fixed differential of 8/5°F, a temperature control range of 40° to 120°F, and operates on 24 to 277V AC. The SPDT switch action is open/close on rise, and the unit includes a 6 ft capillary with a 4 in x 3/8 in bulb.

Frequently Asked Questions

What is the JOHNSON CONTROLS A28MA-1C two-stage temperature control used for?

The JOHNSON CONTROLS A28MA-1C is a weatherproof two-stage temperature control used in HVAC and industrial applications to regulate heating or cooling equipment. It is suitable for outdoor or damp environments due to its steel enclosure, and it controls temperatures from 40° to 120°F with a fixed 8/5°F differential.

What are the specifications of the JOHNSON CONTROLS A28MA-1C?

The JOHNSON CONTROLS A28MA-1C has a temperature control range of 40° to 120°F, a fixed differential of 8/5°F, and operates on 24 to 277V AC. It features SPDT switch action (open/close on rise), a 6 ft capillary with a 4 in x 3/8 in bulb, and a steel enclosure for weatherproof protection.

Where to buy the JOHNSON CONTROLS A28MA-1C worldwide?

You can source the JOHNSON CONTROLS A28MA-1C through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine JOHNSON CONTROLS parts to procurement teams and engineers globally.

How to install the JOHNSON CONTROLS A28MA-1C temperature control?

Mount the JOHNSON CONTROLS A28MA-1C in a dry, accessible location using the steel enclosure's mounting holes. Connect the SPDT switch per the wiring diagram for 24 to 277V AC, ensuring the capillary bulb is fully immersed in the sensed medium. Secure the 6 ft capillary without kinks, and verify the setpoint and differential before energizing.

Used in

Common applications for JOHNSON CONTROLS
Building automation systems — Johnson Controls TE-6361M-1 duct temperature sensor for monitoring duct temperatures in HVAC systems.
Refrigeration systems — Johnson Controls SEC99AA-24C armored capillary tubing for connecting pressure controls.
HVAC differential pressure control — Johnson Controls P74EA-8C for controlling equipment based on pressure changes.
Liquid flow detection — Johnson Controls F261MAH-V01C paddle flow switch for piping systems.
Hydronic heating and cooling — Johnson Controls VG2431YN globe valve for flow control in water systems.
Refrigeration condensing units — Johnson Controls P66AAB-1C fan speed control for maintaining pressure.
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JOHNSON CONTROLS Products

3G Electric supplies JOHNSON CONTROLS weatherproof two-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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