146351P1S Liebert Mod Motor

Overview

The Liebert 146351P1S is a high-precision modulating actuator motor designed specifically for use within Liebert environmental control and precision cooling systems. This original equipment manufacturer (OEM) component is engineered to provide reliable, direct-fit performance for modulating valves, ensuring accurate temperature and humidity control in business-critical environments like data centers. While this specific part number has been discontinued by the manufacturer, it is widely recognized for its durable construction and is typically replaced by the updated model 10046890P1S.

Features

• Magnetic clutch provides constant output force for positive valve close-off and protects the motor during stall conditions
• High-precision feedback control via a 2K ohm position feedback potentiometer for superior accuracy
• Pre-wired design with unique harness connectors for easy “plug-and-play” installation into Liebert systems
• Compact and robust industrial-grade housing built for long-term reliability in HVAC applications
• Modulating action allows for precise, incremental adjustments to valve positions rather than simple on/off operation

Specifications

• Manufacturer: Liebert (Vertiv)
• Part Number: 146351P1S
• Replacement Part: 10046890P1S
• Voltage: 24V AC/DC (50/60 Hz)
• Torque/Force: 90 in-lbs (90#)
• Stroke Length: 0.75 inches
• Weight: Approximately 2.65 lbs
• Country of Origin: United States

Applications

• Primary use as a valve actuator in Liebert precision cooling and HVAC units
• Integration with Liebert XDWP and Deluxe System (DE) family cooling equipment
• Environmental control systems requiring precise modulation of chilled water or glycol flow
• Replacement of aging or failed modulating motors in existing data center infrastructure
• Suitable for industrial air handling units where 24V modulating control is required for 0.75-inch stroke valves