Product Overview

The Century UST1102 is a dependable 1 HP, single-speed pool & spa pump motor featuring a threaded 56J (C-Face/round flange) mount for direct, secure attachment to compatible pump housings. Designed for pool-duty operation, it runs on 115/230V, includes automatic thermal overload protection, and uses an Open Drip Proof (ODP) enclosure for typical outdoor equipment-pad installations.

Ideal For

• Replacing a failed motor on pumps that use a 56J threaded-shaft motor

• Pool/spa systems needing a 1 HP, single-speed, single-phase motor

• Installs where you need 115V or 230V wiring flexibility

• Restoring performance when a motor is noisy, overheating, slow to start, or won’t run

Key Features

• 1 HP pool pump motor

• 1-Speed, Single-Phase, 60 Hz

• Dual Voltage: 115/230V

• 56J Frame (round/C-face style), no base

• Threaded stainless steel shaft for direct impeller mounting

• Rotation: CCW (Counter-Clockwise) – Pump End

• Speed: 3450 RPM

• Enclosure: Open Drip Proof (ODP)

• Automatic overload protection

• Capacitor Start / Capacitor Run design (common for this model)

Benefits

• Restores reliable pump operation and consistent water circulation

• Threaded-shaft design helps ensure a secure impeller connection

• Dual-voltage support makes it easier to match existing electrical setups

• Proven replacement choice for many common pool pump applications using a 56J motor

Customer-Facing Q&A

Q: What does 56J mean, and why is it important?
A: 56J refers to the motor’s mounting/frame style used on many pool pumps (round/C-face style). Matching the frame type helps ensure proper fit.

Q: Is this motor 115V or 230V?
A: It’s dual-voltage (115/230V) and can be wired for either, depending on your setup.

Q: Is the shaft threaded?
A: Yes—this model has a threaded shaft for direct impeller mounting.

Q: Which way does it rotate?
A: CCW rotation when viewed from the pump end (common for many pool pumps).

Q: What else should I replace during installation?
A: It’s strongly recommended to replace the shaft seal during a motor swap to help prevent leaks and protect the new motor.

Specifications

• Brand: Century

• Model: UST1102

• Horsepower: 1 HP

• Speeds: 1-Speed

• Phase: 1 Phase

• Frequency: 60 Hz

• Voltage: 115/230V

• Frame: 56J

• RPM: 3450

• Rotation: CCW (Pump End)

• Service Factor: 1.10

• Enclosure: ODP (Open Drip Proof)

• Thermal Protection: Automatic overload

• Shaft: Threaded stainless steel (5/8" diameter)