Introducing the 4 HP Single-Phase Thru-Bolt Motor, model B237—a reliable, easy retrofit for pool and spa equipment, HVAC blowers, pumps, conveyors, and small machine tools. Designed for 230–240V systems, it combines rugged construction with a compact footprint to fit tight spaces without compromising performance.
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Power and Speed: 4 HP, 2-pole design delivering 3450 RPM at 60 Hz for steady torque and smooth operation.
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Voltage and Phase: 230–240V, single‑phase operation compatible with standard home, commercial, and light industrial circuits.
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Frame and Mounting: 56Y (56J) frame with thru‑bolt mounting for rigid, aligned installation under heavy loads.
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Shaft and Coupling: Threaded shaft simplifies coupling to belts, pulleys, or gear assemblies.
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Protection: Auto overload protector guards against overheating during peak demand.
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Footprint: Compact 13.33 inches in length to fit tight enclosures and retrofit spaces.
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Current: Full-load current around 12 A, suitable for standard 230V circuits.
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Brand & Reliability: From A.O. Smith / Century Electrical, delivering trusted performance and durable build quality.
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Ideal Applications: HVAC blowers and air handling equipment, water or sump pumps in residential and light commercial settings, conveyors and material handling, as well as industrial fans and small process equipment.
Upgrade to a dependable single‑phase drive with the B237. Its thru‑bolt footprint and threaded shaft support precise alignment and robust coupling in constrained spaces, while the auto overload protector helps protect against overheating during peak loads. For installation, ensure a 230–240V supply and that controllers and breakers are rated for at least 12 A FLA, then tighten mounting hardware to spec to maintain alignment under load.
