US Motors Spa Motor BN34 Thru Bolt 2 HP 230V 2 Speed 48Y Frame SPH20FL2S For Spa Equipment

Meet the Motor - ThruBolt BN34, a rugged, two-speed spa motor built to keep hot tubs and spa systems circulating with reliable power. Crafted by US-Motors, this 2 HP, 230V unit is a practical, retrofit-friendly solution for a wide range of spa pump assemblies, delivering dependable flow across both speeds.

Two-speed performance that adapts to your spa needs

Operate with precision thanks to a true 2-speed design. High-speed mode delivers strong circulation for quick heat-up and jet activity, while low-speed mode provides energy-efficient filtration and quieter operation. On the electrical side, the motor draws approximately 8.6 A at high speed and 3.4 A at low speed, helping you manage load and energy use without compromising performance.

Key features

• Frame: 48Y — a common, retrofit-friendly footprint that fits many spa pump assemblies
• Horsepower: 2.0 HP (total)
• Voltage: 230V, single-phase
• Speed: 2-speed (2-Spd)
• Shaft: Threaded shaft for secure coupling
• Motor style: Through Bolt
• Capacitor: On Top: No (not mounted on top)
• Manufacturer: US-Motors
• Model references: BN34 / SPH20FL2S

Why this motor stands out

Designed specifically for spa and hot tub systems, the BN34 through-bolt motor delivers consistent torque and smooth operation across speeds. Its threaded shaft and through-bolt mounting simplify retrofit and installation, reducing downtime during service. The 48Y frame preserves compatibility with a wide array of spa pumps, letting you upgrade without reworking plumbing or electrical components.

Ideal use cases

• Replacing a failing 2 HP spa motor in 230V, 48Y-frame equipment
• Dual-speed circulation for varied spa programs—rapid jet action or energy-conscious filtration
• Service scenarios where reliable, low-maintenance drive is essential

Installation tips and considerations

Before replacing, verify your wiring and control setup match a 230V supply and a two-speed configuration. The through-bolt mounting and threaded shaft require correct alignment with the pump coupling to prevent vibration. If your system uses a separate capacitor, note that this unit does not have a top-mounted capacitor, so plan for any external capacitor requirements accordingly.