A19BAC-3C Johnson Controls Temperature Control

Overview

The Johnson Controls A19BAC-3C is a single-stage, line-voltage mechanical temperature control designed for heating or cooling applications. It features a liquid-filled coiled sensing bulb attached directly to the exterior of the enclosure, providing uniform control and high sensitivity to ambient space temperature changes without requiring external power. The unit is built with a rugged steel NEMA 1 enclosure and features a highly visible external range scale dial with a screwdriver or knob adjustment.

Features

• Liquid-filled coiled bulb sensing element ensures maximum sensitivity and accurate operation unaffected by barometric pressure or altitude
• Dependable single-pole, double-throw (SPDT) snap-acting switches enclosed in a dust-tight housing
• Visible external range scale for quick and easy monitoring of temperature setpoints
• Adjustable cutout stop supplied as standard for setting temperature limit safety points
• No external power required for thermostat operation

Specifications

• Control Temperature Range: 30°F to 110°F (0°C to 43°C)
• Temperature Differential: 3.5°F (1.7°C) fixed
• Switch Type: Single-Pole Double-Throw (SPDT)
• Electrical Rating: 24 to 600 VAC; 16A continuous, Full Load 15A @ 120VAC, 8A @ 240VAC
• Motor Rating: 1 HP
• Enclosure Rating: NEMA 1 general purpose steel housing
• Mounting: Vertical mounting to a standard 2″ x 4″ box or flat surface

Applications

• Automatic ventilation or heating control in livestock barns, poultry houses, milk houses, and brooder houses
• General purpose space temperature control in commercial, agricultural, and industrial buildings
• Line-voltage mechanical thermostat operation for exhaust fans, cooling systems, and space heating equipment