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Johnson Controls Other A19BUC-2

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A19BUC-2

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The Johnson Controls A19BUC-2 is a temperature controller designed specifically for hazardous locations. It operates on a voltage rating ranging from 24 to 277 VAC, making it versatile for various applications in challenging environments.

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Technical specifications for A19BUC-2

ManufacturerJohnson Controls
Product TypeTemperature Controller for Hazardous Locations
Product LineOther
Part NumberA19BUC-2
Sensing ElementCoiled Bulb (Liquid-Filled)
Voltage Rating24 to 277 VAC
Set Point (Operating) Range-7 to 27 °C
Current Rating at Full Load16.0/9.2/8.0 A
Switch TypeSingle-Pole, Double-Throw (SPDT)
DifferentialFixed 1.9 °C (3.5 °F)
Bulb and CapillaryCoiled Bulb and 6 ft Capillary (Standard)
Hazardous Location RatingUL Listed for Applications in Class I, Group D and Class II, Groups E, F, and G Environments
Locked Rotor Amperes (at 120/208-240/277V)96.0/55.2/48.0 A
Non-Inductive Amperes22.0 A (All Voltages)
Pilot Duty Rating125 VA, 24 to 600VAC
MountingFlat Surface with Two 3/8-Inch Mounting Holes
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The A19BUC-2 model from Johnson Controls serves as a dedicated temperature controller, specifically crafted for use in hazardous conditions. This controller is equipped with a liquid-filled coiled bulb, which serves as the sensing element for detecting temperature changes. It has a maximum operating voltage ranging from 24 to 277 VAC, suitable for different systems.

Providing a variable set point range between -7 °C and 27 °C, it can accommodate a variety of temperature management needs. The device weighs 5 lbs and features a current rating of 16.0 A when operating at full load. In addition to this, the controller's SPDT switch ensures that it can handle various control scenarios with ease. A fixed differential of 1.9 °C (3.5 °F) maintains accuracy over its operational range.

For installation, the A19BUC-2 utilizes a standard 6 ft capillary tubing, enabling placement flexibility. This temperature controller is UL Listed for use in hazardous locations, specifically in Class I, Group D, and Class II, Groups E, F, and G environments.

When it comes to its specifications, the device demonstrates robust electrical capacity, exhibiting locked rotor amperes of 96.0 A at 120V, 55.2 A at 208V-240V, and 48.0 A at 277V. For non-inductive loads, it can handle a steady current of 22.0 A at all voltages. Additionally, it supports a pilot duty rating of 125 VA with an operating range continuing from 24 to 600 VAC. For mounting, the controller is designed for flat surfaces and incorporates two 3/8-inch mounting holes for ease of installation.