Overview
The Liebert 123273P1S is a genuine OEM 3-pole electrical contactor designed for precise switching and control within HVAC and cooling systems. As a critical component in maintaining operational efficiency, this contactor manages the power supply to high-demand parts like compressors and fans. It features integrated auxiliary contacts with both Normally Open (NO) and Normally Closed (NC) configurations, providing enhanced control logic and system reliability for data centers and industrial environments.
Features
- Three-pole configuration for robust industrial-grade electrical switching
- Integrated auxiliary contacts (NO/NC) for expanded control and feedback options
- Genuine OEM design ensures a direct replacement and seamless compatibility with Liebert equipment
- Engineered to protect against electrical overloads and extend the life of connected components
- Reliable 24V coil operation compatible with standard HVAC control systems
- Durable construction designed for high-performance switching in demanding environments
Specifications
- Manufacturer: Liebert (Vertiv)
- Part Number: 123273P1S (Direct replacement for 123273P1)
- Coil Voltage: 24 VAC
- Current Rating: 30 Amps (Inductive) / 35 Amps (Resistive)
- Full Load Amperage (FLA): 25A
- Number of Poles: 3
- Auxiliary Contacts: 1 NO / 1 NC
- Frequency: 50/60 Hz
- Weight: Approximately 1.19 lbs to 2.0 lbs
- Dimensions: Approximately 4.2 x 4.2 x 4.15 inches
Applications
- Power regulation and switching for compressors in Liebert precision cooling units
- Control of blower motors and fans in large-capacity HVAC air handlers
- Industrial automation and electrical circuit protection in data center infrastructure
- Direct OEM replacement for maintenance and repair of Liebert environmental control systems
- Use in systems requiring auxiliary feedback for monitoring component status



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