Johnson Controls S350AA-1 Temperature Stage Module

Johnson Controls S350AA-1 Temperature Stage Module

Condition: Used

The Johnson Controls S350AA-1 is a stand-alone Proportional plus Integral (PI) control module designed for precise temperature control in HVAC systems. It features a 1 to 30-degree differential adjustment and offset range, allowing for tailored temperature regulation.
This module provides accurate control and repeatability through an electronic interface. The S350AA-1 includes a Single-Pole Double-Throw (SPDT) output rated for up to 10A, making it suitable for controlling various heating, cooling, and ventilation components. It supports surface or DIN rail mounting for easy installation and includes a plug-in digital display for simplified configuration and monitoring.

Features
Model: S350AA-1
Control Type: Proportional plus Integral (PI)
Supply Voltage: 24 VAC, 50/60Hz (provided by A350)
Differential Adjustment: 1°F to 30°F
Offset Range: Adjustable
Output: SPDT, 10A capacity
Display: Plug-in digital display for easy configuration
Scale: Fahrenheit
Mounting: Surface or DIN rail installation
Accuracy: Electronic accuracy and repeatability
Staging: Slave modules available for reset and sequence staging
Setpoint Module: Supports alarm and control integration

Applications
The Johnson Controls S350AA-1 is designed for precise temperature regulation in various HVAC and industrial systems:
Commercial HVAC Systems – Precision temperature control in office buildings and commercial spaces
Industrial Facilities – Managing heat and cooling in production environments
Cold Storage and Refrigeration – Temperature maintenance for food preservation and pharmaceutical storage
Data Centers – Temperature stabilization to prevent equipment overheating
Healthcare Facilities – Regulating surgical and patient care room temperatures

Cross-Referenced Models
Johnson Controls S350AA-2 – Similar module with additional output options
Honeywell T775 Series – Comparable temperature controllers for HVAC applications
Siemens RWD Series – Proportional controllers with similar configuration options

Comparable Products
Honeywell T775A2009 (24V Proportional and Integral Controller)
Siemens RWD62 (PI control module with adjustable differential)
Johnson Controls S350AA-2 (Alternate output configuration)

Part of a Larger System
The S350AA-1 is designed to operate as part of a modular Johnson Controls temperature control system and is compatible with:
Johnson Controls A350 Controller: Provides input voltage and setpoint configuration
R350 Series Relay Modules: For additional control and switching functions
Temperature Sensors: A99 Series for accurate temperature input
Heating and Cooling Equipment: HVAC units, chillers, and air handlers

Related
Johnson Controls proportional temperature controller
PI control module for HVAC systems
S350AA-1 temperature controller replacement
HVAC control module with adjustable differential
Proportional and Integral temperature regulation

Common Requests:
“Replacement for Johnson Controls S350AA-1 temperature module”
“Proportional and Integral temperature controller for HVAC”
“Compatible A350 controller for S350AA-1 module”
“Johnson Controls PI controller with 1 to 30-degree differential”
“HVAC temperature control with digital display”

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