DP4A-S Johnson Controls

Overview

The Johnson Controls A19ADB-42C is a single-stage mechanical remote bulb temperature control designed for general purpose heating, ventilation, and cooling applications. It features a liquid-filled sensing element and a capillary to accurately monitor temperature changes, utilizing a single-pole single-throw (SPST) switch that opens on temperature rise. This model incorporates a manual reset feature, ensuring the control locks out at high temperatures until manually reset for enhanced safety.

Features

• Lockout high with trip-free manual reset mechanism
• SPST switch action that opens on temperature rise (open high)
• Environmentally friendly liquid-filled copper sensing element
• Compact NEMA 1 enclosure providing robust protection
• Remote bulb and capillary design for flexible sensor placement
• Constant differential throughout the entire temperature range

Specifications

• Product Type: Remote Bulb Temperature Control
• Series: A19 Series (Type A19ADB)
• Number of Stages: Single-Stage
• Switch Type: SPST (Open High)
• Enclosure Rating: NEMA 1
• Reset Type: Manual Reset
• Sensing Element: Liquid-Filled Copper Bulb and Capillary

Applications

• Hot water cutout and heating systems
• Commercial and industrial HVAC operating controls
• General purpose temperature regulation in refrigeration and air conditioning
• Beverage coolers, display cases, and frozen food storage unit monitoring