Intermatic - 146MT579 - Knob-Wall Switch FF Series - Black

Brand: Intermatic | Manufacturer Part Number: 146MT579 | Big Frog Supply SKU: 146MT579

Product Overview

The Intermatic 146MT579 is a black replacement control knob for compatible Intermatic FF Series spring-wound countdown timers. It is intended for a timer whose original knob is missing, cracked, worn, or otherwise difficult to use while the internal timing mechanism remains functional. The knob restores the user-facing grip used to turn the timer and select the desired countdown period.

Key Features

• Black replacement timer knob
• Designed for compatible Intermatic FF Series timers
• Plastic construction
• Individual service component

Compatibility

Use the 146MT579 with compatible FF Series spring-wound countdown timers that require the black replacement knob. Check the installed timer model and knob color before ordering because similar Intermatic timer families may use different shafts or controls.

Installation Notes

Allow the timer to return to its resting position before removing the old knob. Align the replacement knob with the shaft and press it into place without excessive force. A damaged or loose timer shaft may require repair or replacement of the complete mechanism.

Frequently Asked Questions

What color is the 146MT579?

This model is the black FF Series replacement knob.

Does this include the wall plate or timer?

No. This listing is for the replacement knob only.

Why Buy This Product from Big Frog Supply?

The 146MT579 is a practical repair part when the timer mechanism still operates but its black control knob needs replacement. Big Frog Supply clearly separates it from the white 146MT577 knob so you can match the correct part.