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Green rectangular circuit board with terminal blocks and adjustment knob

Ruth's sister

Ruth's sister 12V 24V 36V 48V 20A PWM motor speed regulator internal power cable

SKU CH-5EKH-MG23V

Controls DC motor speed at 12, 24, 36 or 48 volts with 20 amp PWM regulation

  • Wide voltage compatibility covers 12, 24, 36 and 48 V systems
  • PWM control delivers smooth speed regulation for DC motors
  • 20 A current rating supports high-power drive applications
  • New condition ensures reliable performance from first use

DC Motor Speed Regulator 12V–48V

This internal power cable integrates a PWM motor speed regulator that accepts 12, 24, 36 or 48 volt DC input and handles up to 20 amps of current. It is designed for builders who need adjustable speed control for high-power DC motors inside a chassis or enclosure.

Upgrade from Fixed-Speed Wiring

The module replaces a simple on-off or fixed-voltage connection, letting you vary motor speed without changing the supply voltage. The jump is worth it when your application demands variable torque or quiet low-speed operation at any of the supported voltage levels.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What connector or terminal spacing does the Ruth's sister 20A PWM regulator need for internal power wiring?

The module accepts supply and motor leads at its screw terminals; use wire sized for 20 A at 12 V, 24 V, 36 V or 48 V and tighten each terminal securely.

Which step do builders most often miss when installing this 12 V–48 V speed controller?

Many forget to set the input-voltage jumper or DIP switch to match the actual supply (12 V, 24 V, 36 V or 48 V) before applying power.

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