Product Overview

The Century Centurion Pro Motor - 1.10 THP 56J | HST110 is a single-speed, dual-voltage pool and spa pump motor with a 56J C-face frame and threaded shaft. It runs at 3450 RPM and can be wired for 115V or 230V service.

Century (Regal Rexnord) has listed the UST1102 as the current replacement for the HST110, with the same 1.1 HP rating and 56J C-face fit. Confirm availability before ordering.

Ideal For

Replacing a failed 1 HP / 1.1 total HP motor on a pool or spa pump that uses a 56J threaded-shaft motor

Service techs needing a dual-voltage motor for 115V or 230V installations

Key Features

1.10 total horsepower

Dual voltage: 115/230V, single phase, 60 Hz

3450 RPM

56J C-face frame with threaded shaft

Open drip-proof (ODP) rolled steel enclosure

Capacitor-start design with automatic thermal overload protection

Benefits

The 56J threaded-shaft design is the common mounting for many residential pool and spa pumps, so this motor can replace an existing motor of the same frame and rating without changing the wet end.

Dual-voltage wiring gives flexibility when the existing circuit is 115V or 230V, and automatic thermal protection helps guard the motor against overheating.

Specifications

Warranty & Compatibility

Before ordering, match the nameplate on your existing motor: frame (56J), shaft type (threaded), total HP, voltage and rotation. Pumps that need a square-flange or 48-frame motor will not accept this unit. Motor replacement involves line-voltage wiring and should be done by a qualified technician with power off at the breaker. Warranty is per Century/Regal Rexnord terms.

Customer-Facing Q&A

Q: Can I run this on 115V?
A: Yes. It is dual voltage and can be wired for 115V or 230V; follow the wiring diagram on the motor.

Q: Is the HST110 still made?
A: Century lists the UST1102 as its current replacement with the same 1.1 HP rating and 56J fit. Contact us to confirm which one we can ship.

Q: Will this fit my pump?
A: It fits pumps that use a 56J C-face motor with a threaded shaft. Compare your old motor's nameplate before ordering.

Q: Does it include a new shaft seal?
A: No. A shaft seal is not included; replacing the seal when changing a motor is recommended.

Q: What speed does it run?
A: It is a single-speed motor at 3450 RPM.