Weg 00118ot3e143jm-s 1 Hp Three Phase Jm Pump Motor

Product Description

The WEG 00118ot3e143jm-s is a 1 HP three-phase JM pump motor built on a rolled steel frame with an open drip-proof (ODP) enclosure. Rated at 0.75 kW and 1,800 RPM, this motor operates on 208-230/460V at 60 Hz, making it suitable for dual-voltage installations in commercial and light industrial pump applications. The ODP design maximizes ventilation and heat dissipation in environments where exposure to dirt and moisture is minimal. Licensed electricians and HVAC-R mechanics typically install this unit in pump drive systems requiring a reliable, standard-frame motor with a 1.15 service factor.

This motor is designed for pump applications using the JM shaft configuration, which is a standard NEMA 143/5JM frame commonly found in centrifugal pump assemblies. It is well suited for residential and light commercial water circulation, booster, and irrigation pump systems installed in relatively clean, dry mechanical rooms or equipment enclosures. The three-phase design is intended for installations served by a three-phase power supply.

Key Features

• 1 HP output at 1,800 RPM nominal speed (1,760 RPM nameplate)
• NEMA 143/5JM frame with JM pump shaft for direct pump coupling
• ODP enclosure promotes airflow and heat dissipation in clean environments
• Dual-voltage rated at 208-230/460V for flexible three-phase installation
• 1.15 service factor provides a modest continuous overload margin
• Rolled steel frame construction for durability and dimensional consistency

Compatibility

Designed as an OEM-style replacement or new-installation motor for centrifugal pump assemblies requiring a NEMA 143/5JM frame, JM shaft configuration, and three-phase power input.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Disconnect and lock out all power to the circuit before mounting or wiring the motor. Verify that the supply voltage and phase configuration match the motor nameplate before energizing. Ensure proper coupling alignment between the motor shaft and pump to avoid premature bearing wear.

Technical Specifications

• Horsepower: 1 HP
• Power Output: 0.75 kW
• Speed: 1,800 RPM (1,760 RPM nameplate)
• Phase: 3-phase
• Voltage: 208-230/460 volts
• Full Load Amps (FLA): 3.3-3/1.5 amps
• Frequency: 60 Hz
• NEMA Frame: 143/5JM
• Enclosure: ODP (Open Drip-Proof)
• Service Factor: 1.15
• Frame Material: Rolled Steel
• Weight: 39 pounds

Standard Information

• Brand: WEG
• Manufacturer Part Number: 00118ot3e143jm-s