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KF  Extreme Options


        Quiet Drive Solid State Relay


All KF Extreme models are available with our optional Quiet Drive Solid State Relay.

Solid state relays are special switches used to turn the heating elements on and off. Solid state relays enhance control performance, extend the life of the heating elements and are expected to last the life of the oven.

Our Quiet Drive Solid State relays can turn the heating elements on and off up to 120 times per second as opposed to traditional mechanical relays that tend to be limited to about once every 10 seconds. This fast response time translates into tighter and more precise temperature regulation.

Evenheat uses special solid state relays that will only switch the heating elements on and off when the AC voltage is at 0V. It's called "Zero Crossing" and our heating elements love it and they show that love by lasting longer!

Solid state, by its nature, has no moving parts (that's why it's called solid state). No moving parts means nothing to wear out and nothing to replace. Unlike traditional mechanical relays our solid state relays are expected to last the life of the oven.

All of our controls are capable of pairing with our solid state relays. We would note that the Set-Pro control offers all the benefits of the solid state relay except for tighter temperature control.

Evenheat's Quiet Drive Solid State Relay System is quite simply the best designed, overbuilt and most reliable solid state relay system available.

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        Power Interrupt Switch


Our optional power interrupt switch removes power from all heating elements as the door is opened and reapplies power as the door is closed.

The switch used for this feature is a true safety switch and is designed specifically for safety applications. Those wishing to enter the oven during use should strongly consider requesting this option as an added measure of safety.

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        Voltage Options


Our default production for KF Extreme Series models is 240V, Single Phase.


We do offer to build KF Extreme Series models​ in 200V, 208V, 220V and 230V by request.

All controls available on the KF Extreme Series models will operate properly on both 50Hz and 60Hz line frequencies. To say it another way, line frequency has no effect. It doesn't matter.

Evenheat recommends that you check your operating voltage before ordering or placing the oven in service.

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        Voltage Phase Options


KF Extreme Series models are produced in a single phase design only.

3 phase Delta and Y (380V, 400V and 415V) designs are not available.

3 phase designs require the circuit be divided into 3 loads or circuits, as it were. The KF Extreme Series models contain 2 heating circuits. So, no-go on that.

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