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JOHNSON CONTROLS A421ABC-02C Single-Stage Electronic Temperature Control - Single-Stage Electronic Temperature Controls
JOHNSON CONTROLSSingle-Stage Electronic Temperature Controls

JOHNSON CONTROLS A421ABC-02C Single-Stage Electronic Temperature Control

The JOHNSON CONTROLS A421ABC-02C is a single-stage electronic temperature control for boiler applications. It operates with a 120V AC input voltage and is compatible with the A99 series. The digital control features…

SKU 3G-OTH-68525

Also listed as: A421ABC02C · A421ABC 02C

Brand
JOHNSON CONTROLS
Item
A421ABC-02C Single-Stage Electronic Temperature Control
Part Number
A421ABC-02C
Category
Single-Stage Electronic Temperature Controls
Available to Order
Also known as:A421ABC-02CJOHNSON CONTROLS
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Technical Specifications

JOHNSON CONTROLS
Manufacturer Part Number
A421ABC-02C
Type
Heat and Cool, -40°F to 212°F, Digital, 1, SPDT
AC/240V AC
120V
Application
Boiler Control
Product Type
Temperature Control
Input Voltage
120V AC
Compatible with Series
A99
Variable Output Voltage
No

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

Product Description

The JOHNSON CONTROLS A421ABC-02C is a single-stage electronic temperature control for boiler applications. It operates with a 120V AC input voltage and is compatible with the A99 series. The digital control features a single SPDT output and a temperature range of -40°F to 212°F.

Frequently Asked Questions

What is the Johnson Controls A421ABC-02C temperature control used for?

The Johnson Controls A421ABC-02C is a single-stage electronic temperature control designed for boiler applications. It provides heat and cool control with a digital display, a single SPDT output, and a temperature range of -40°F to 212°F, making it suitable for industrial heating systems.

What are the specifications of the Johnson Controls A421ABC-02C?

The Johnson Controls A421ABC-02C operates on 120V AC input voltage and is compatible with the A99 series sensors. It features a single SPDT output, digital control, and a temperature range of -40°F to 212°F. It is a single-stage control for boiler applications with no variable output voltage.

Where to buy the Johnson Controls A421ABC-02C worldwide?

3G Electric supplies the Johnson Controls A421ABC-02C temperature control to customers worldwide. We handle full logistics, customs clearance, and delivery for global orders. Contact us for availability and lead time on this boiler control part.

How to install the Johnson Controls A421ABC-02C temperature control?

Install the Johnson Controls A421ABC-02C by mounting it in a suitable enclosure, wiring the 120V AC input and SPDT output per the wiring diagram, and connecting a compatible A99 series sensor. Follow standard electrical safety practices and consult the manufacturer's manual for specific settings.

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 single-stage electronic temperature controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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