C550YNN-1C Johnson Controls Power Supply Module

Overview

The Johnson Controls C550YNN-1C is a System 550 power supply module designed to deliver reliable internal supply power for modular electronic control systems. It acts as a line voltage connection component, stepping down high-voltage inputs to safe low-voltage power to run control and expansion modules within an integrated system configuration.

Features

• Part of the flexible, modular System 550 electronic control assembly.
• Designed for easy integration with C550 control modules and output expansion modules.
• Supports dual line-voltage input options for regional power compatibility.
• Streamlined line-voltage terminal connections for straightforward wiring.

Specifications

• Input Voltage: 120 VAC or 208/240 VAC stepdown options.
• Output Voltage: 24 VAC.
• Electrical Class: Class 2 (North America) or Safety Extra-Low Voltage (SELV) (Europe).
• Frequency: Dual rated for 50 Hz and 60 Hz systems.
• Terminal Configuration: Terminals 1 and 2 for 120 V connections; terminals 1 and 3 for 240 V connections.

Applications

• Used to power Johnson Controls System 550 modular control assemblies where external 24 VAC/VDC power source is unavailable.
• Integrated into HVACR systems requiring multi-stage on/off, proportional, or proportional-plus-integral control.
• Suitable for commercial building automation and environmental controls monitoring temperature, humidity, and pressure.