KB ELECTRONICS K177-1005 Electric Motor Control — 5.0 Max Amps, 120V

Overview

Meet the KB ELECTRONICS K177-1005 Electric Motor Control, a compact, reliable solution for smoothly varying the speed of shaded pole and PSC motors at 120V. With a 5.0A maximum rating, this controller is designed to respect motor nameplate current while offering continuous, adjustable speed for a range of fan and blower applications.

Designed to fit into standard 2" x 4" electrical wall boxes, this control blends into existing panels without drawing unnecessary attention. UL and CSA approvals provide reassurance about safety and compliance in both residential and light commercial settings.

Key benefits and use cases

Imagine more consistent airflow and quieter operation across seasonal changes. This motor control supports nuanced speed adjustments, helping you dial in the right balance for ventilation, comfort, and energy use. It’s a practical choice for projects where you want flexibility without sacrificing reliability.

• Applications include fans, blowers, fireplace blowers, attic fans, humidifiers, and ventilators.
• Infinite variable speed enables fine-tuning to match real-world conditions.

What to consider for installation

To prevent damage, do not use this control with capacitor-start or capacitor-run motors, and do not pair it with gear motors. Ensure the connected motor has enough torque to avoid stalling, and for direct-drive setups, install a cooling fan blade on the shaft to aid cooling.

Specifications and installation notes

• 5.0 Max amps at 115V; UL & CSA approved
• Designed for standard 2" x 4" electrical wall box
• Not for capacitor start/run motors; not for gear motors
• Suggested applications: Fans, Blowers, Fireplace Blowers, Attic Fans, Humidifiers, Ventilators
• Installed controls are not returnable

Real-world scenarios

In a workshop or living space, this controller can help you adjust airflow gradually as temperatures rise or fall, potentially improving comfort without abrupt changes. In a fireplace or attic ventilation setup, it offers a way to modulate output without manual fan speed changes, keeping operation steady and predictable.