Overview
The Johnson Controls A419AEC-2C is a single-stage electronic temperature control with a single-pole, double-throw (SPDT) relay output. This digital controller combines a lockable front-panel touchpad, LCD display, and remote sensing capability to provide dependable temperature management in HVAC and refrigeration systems. The A419AEC-2C is housed in a NEMA 4X watertight, corrosion-resistant enclosure, making it suitable for demanding industrial and commercial environments.
Key Features
- Single-stage, electronic design with SPDT output relay for precise temperature control
- Lockable touchpad for secure setup and adjustment; LED indicator for relay status
- LCD display for real-time temperature and function status monitoring
- Dual heating and cooling modes with adjustable setpoint and differential
- Anti-short cycle delay and temperature offset function for system protection
- Remote sensing capability with interchangeable sensor options
- NEMA 4X watertight enclosure for harsh and wet environments
Technical Specifications
- Part Number: A419AEC-2C
- Supply Voltage: 120/240 VAC
- Output: SPDT relay
- Temperature Range: -30 to 212°F (-34 to 100°C)
- Differential: 1 to 30°F (1 to 30°C), adjustable
- Display: LCD with status indication
- Control Type: Single-stage with heating/cooling modes
- Enclosure Rating: NEMA 4X (watertight, corrosion-resistant)
- Sensor: 6-1/2 ft (2 m) probe lead included
- Mounting: Surface-mount compatible
Typical Applications
- HVAC heating and cooling system control
- Walk-in freezer and cooler temperature management
- Refrigeration equipment monitoring and setpoint control
- Industrial process temperature regulation
- Commercial building climate control systems
- Alarm and shutdown control based on temperature thresholds
Compatibility & Replacements
Compatible With
- Standard 120/240 VAC power supplies
- HVAC and refrigeration control circuits requiring SPDT relay output
- Remote temperature sensors and probes compatible with A99B Series
- DIN rail and surface-mounted control panel installations
- Legacy Johnson Controls HVAC control systems
Replaces / Drop-In Replacement For
- Earlier Johnson Controls A419 series models with equivalent voltage and enclosure requirements
- Verify compatibility with your system integrator before ordering, as successor models (such as A421) may have different connector or terminal configurations
Works With
- Standard HVAC thermostatic control applications
- Heating and cooling equipment with single-stage switching requirements
- Remote temperature sensor systems (interchangeable A99B Series sensors)
- Industrial control panels and electrical enclosures with standard relay interfaces
