The Johnson Controls A419Abc-1C, replaced by the A421Abc-02C, is an electronic temperature controller with a display designed for precise temperature regulation. It features a wide operating range from -40°F to 212°F and allows for an adjustable differential between 1°F and 30°F. The controller is equipped with a user-friendly 3-button touchpad interface, including Menu, Up Arrow, and Down Arrow buttons, for seamless operation.
This device supports robust electrical loads, with ratings of 16 Amp/120V, 9.2 Amp/208V, and 8 Amp/240V. Housed in a durable NEMA 1 enclosure, it utilizes a Single Pole Double Throw (SPDT) relay for versatile control applications. The included temperature sensor features a 6-1/2 ft. 2-wire lead and a 1/4″ x 2″ bulb for accurate temperature measurements.
An important note for installation is to use copper conductors only, ensuring optimal performance and safety. This controller is a reliable solution for managing temperature in various HVAC and industrial applications.
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| Product | Johnson Control # A419Abc-1C replaced by A421Abc-02C |
| Type | Electronic Temperature Control with Display |
| Temperature Range | -40°F to 212°F |
| Adjustable Differential | 1°F to 30°F |
| Control Interface | 3-button touchpad: Menu, Up Arrow, Down Arrow |
| Electrical Ratings | AC Full Load: 16 Amp/120V, 9.2 Amp/208V, 8 Amp/240V |
| Enclosure | NEMA 1 |
| Relay Type | SPDT |
| Temperature Sensor | 6-1/2 ft. 2-wire lead, 1/4″ x 2″ bulb |
| Important Note | Use copper conductors only |