A19ABC-12C Johnson Controls Temperature Control

Overview

The Johnson Controls A19ABC-12C is a single-stage, line-voltage mechanical temperature control designed for universal replacement in open high or single-pole, double-throw (SPDT) applications. It features a liquid-filled sensing element that provides rapid response to temperature changes and comes complete with a well assembly for 1/2-inch NPT tapping, making it ideal for hot water boilers and immersion systems.

Features

• Liquid-filled element for rapid response to temperature changes
• Adjustable differential for tailored system operation
• Universal replacement design for broad application compatibility
• Robust NEMA 1 gray galvanized steel enclosure
• No external power required for operation

Specifications

• Temperature Range: 100°F to 240°F (38°C to 116°C)
• Differential: Adjustable from 6°F to 24°F (3.3°C to 13°C)
• Switch Type: SPDT (Open/Close on Rise)
• Capillary Length: 8 feet (96 inches)
• Bulb Size: 0.290 in. x 2.33 in. (.290 x 2-3/8″)
• Maximum Bulb Temperature: 290°F (143°C)
• Electrical Ratings: 120 VAC (10.0 FLA, 60.0 LRA), 240 VAC (6.0 FLA, 36.0 LRA); Pilot Duty 125 VA at 24 to 600 VAC
• Well Connector Size: 1/2 inch NPT

Applications

• Operating control for hydronic heating and hot water boilers
• Open high or SPDT space and fluid temperature regulation
• Universal replacement for industrial and commercial HVAC/R control configurations