Product Overview

The Century ST1102 is a premium full-rated replacement pool pump motor engineered for dependable performance in residential in-ground pool and spa applications. Delivering 1 HP with a 1.50 service factor (1.50 THP), this motor is designed for pumps requiring a 56J C-face frame and threaded stainless-steel shaft.

Operating at 3450 RPM, the ST1102 is dual-voltage configurable for 115V or 230V single-phase electrical systems, making it a versatile replacement for many popular pool pump brands. Its rugged construction includes sealed ball bearings, automatic thermal overload protection, capacitor-start operation, and a corrosion-resistant stainless-steel shaft for long service life.

Whether replacing a worn-out motor or restoring an existing pump, the Century ST1102 delivers reliable starting torque, efficient operation, and proven durability.

Key Features

Genuine Century replacement pool pump motor

Part Number: ST1102

Full-rated 1 HP

1.50 Service Factor (1.50 Total Horsepower)

Single-speed operation

Dual voltage 115/230V

3450 RPM

56J C-face frame

Threaded stainless-steel shaft

Capacitor-start design

Sealed ball bearings

Automatic thermal overload protection

Open drip-proof (ODP) enclosure

Continuous-duty rated

Ideal for residential pool and spa pumps

Benefits

Restores pump performance without replacing the complete pump

Compatible with many popular pool pump models using a 56J threaded-shaft motor

Stainless-steel shaft resists corrosion in pool environments

Dual-voltage flexibility simplifies replacement installations

Sealed bearings provide quiet, dependable operation

Full-rated design delivers strong starting torque and reliable performance

Continuous-duty construction is built for everyday pool circulation

Excellent replacement for many Century and AO Smith pool motors

Specifications

What's Included

• Century ST1102 Pool Pump Motor
• Factory-installed capacitor
• Thermal overload protection
• Threaded stainless-steel shaft

Not Included

• Shaft seal
• Pump housing
• Impeller
• Seal plate
• Diffuser
• Wiring or electrical accessories

Warranty & Compatibility

Compatible Applications

The Century ST1102 is designed for pool and spa pumps requiring:

• 56J C-face motor
• Threaded shaft
• 1 HP full-rated motor
• 1.50 THP
• 115/230V single-phase power
• 3450 RPM operation

Always verify the original motor's frame, horsepower, service factor, shaft style, voltage, and rotation before ordering.

Installation Information

Professional installation is recommended.

For best results:

• Match horsepower and service factor to the original motor.
• Verify the pump uses a 56J threaded-shaft motor.
• Configure wiring for 115V or 230V before startup.
• Always install a new mechanical shaft seal when replacing the motor.
• Prime the pump before operating.

Confirm Before Ordering

• Confirm Century model ST1102
• Verify a 56J C-face threaded-shaft motor is required.
• Confirm 1 HP Full Rated / 1.50 THP
• Verify 115/230V electrical service.
• Confirm 3450 RPM single-speed operation.
• Replace the mechanical shaft seal during installation.
• Compare your existing motor nameplate before purchasing.

Warranty Information

This genuine Century motor is backed by the manufacturer's limited warranty.

Warranty coverage is subject to proper installation, correct application, and compliance with Century installation guidelines. Damage caused by incorrect wiring, improper voltage, water intrusion from a failed shaft seal, misuse, or improper installation is not covered.

Customer-Facing Q&A

Q: Is this a full-rated motor?
A: Yes. The ST1102 is a 1 HP full-rated motor with a 1.50 service factor (1.50 THP).

Q: Can it operate on both 115V and 230V?
A: Yes. It is field-configurable for either 115V or 230V operation.

Q: What frame does this motor use?
A: It uses a 56J C-face frame with a threaded shaft.

Q: Does it include a shaft seal?
A: No. A new shaft seal should be purchased separately based on your pump model.

Q: Will this fit my pool pump?
A: It fits many pumps requiring a 56J threaded-shaft motor, but compatibility should always be confirmed using your existing motor specifications.