Jen-Ken 2431 3" Ceramic/Pottery Kiln

The 2431-3" upgrades the classic 2431 with 3" firebrick insulation for 20% more thermal efficiency, heat retention, and longevity — making it ideal for frequent firings and production use. Great for studios running multiple loads per day at cone 04–06, and capable of reaching cone 8 (2300°F) when needed.

Despite its generous capacity, it still fits through a standard 30" doorway. Lid lifters come included for effortless loading and unloading.

This model adds full electrical flexibility:

• 45A NEMA 6-50 plug OR

• 55A direct-wire (recommended for heavy high-fire cycles)

Choose Your Controller

Standard controller: Orton AutoFire 12-Key (AF3000)
Upgrades available:

• Orton AutoFire Slide Touchscreen – PID precision, 35 schedules

• TAP Touchscreen Smart Controller – Wi-Fi control, unlimited profiles, smart updates

Standard & Optional Enhancements

• ✅ 3" brick walls/lid — included

• ✅ Solid-State Relays — smooth, quiet, long-life firing

• Furniture Kit available for multi-shelf production loading

Key Features

• Best for studios, classrooms, and production potters

• Cone 6 standard; cone 8 capable

• True production insulation with 3" brick

• Fits through standard 30" doors

• 45A plug or 55A direct-wire options

• Lid lifters included

• Includes stand, manual, and 2-year warranty

Built for makers who fire often, fire big, and need a kiln that keeps pace with their growth — day after day, firing after firing.

• Model: 2431 3"
  
• Inside Chamber Dimensions: 24" W x 31" H
• Cubic Feet: 8.11
• Maximum Temperature: 2300°F/1260°C
• Elements: side firing
• Kiln weight: 275 pounds
  
• Volts: 240
• Amperage: 45A with NEMA 6-50 Plug, 55A direct wired
  
• Watts: 10,800 with 45A config, 13,200 with 55A config
  
• Breaker: 60 amp for 45A config, 70A for 55A config
• Circuit wire gauge: 6 with 45A config, 4 with 55A config

The furniture kit option includes:

• 4 layers of shelves: 3 full, 2 half
• 6 each: 1, 2, 4, and 6 inch posts
• 1 pound of shelf primer

Jen-Ken's current production timeline is about 6 to 8 weeks.

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Choose the voltage that matches the electrical service where the kiln will be installed. Some kilns are available in only one voltage, while others can be ordered in multiple voltages. If both 120V and 240V are available, 240V is generally the preferred choice because it places less demand on your electrical system, while 120V offers the convenience of operating on a dedicated standard household circuit. If both 208V and 240V are available, select the voltage that matches your building's electrical service—240V is most common in homes, while 208V is common in many commercial, educational, and institutional buildings. If you're unsure which voltage you have, confirm it with your electrician before ordering.

Your kiln must be built to match the electrical service where it will be installed. Choose single-phase if that's what your building has (almost all homes do). Choose three-phase only if your building has three-phase power available. If both are available, three-phase is generally the preferred option. If you're unsure, verify the available electrical service with your electrician before placing your order.

Mechanical relays are standard and reliable. Solid-state relays (SSR) offer silent operation, faster cycling, greater precision, and longer lifespan—ideal for frequent or high-accuracy firings.

The following controllers are used across kilns sold by Pottery Pulse. Not all models offer every option—available controllers are listed on each product page. Some kilns include only the standard controller, while most allow upgrades for added precision and convenience.

Olympic Kilns

• Infinite Switch – Manual dial control for simple heat adjustments.
• KilnStar – Digital controller with preset and user-defined programs.
• Genesis – Advanced touchscreen interface with Wi-Fi and data logging.

Evenheat Kilns

• Icon – Digital 3-button controller for straightforward firing.
• RampMaster II – Manual digital controller for ceramic kilns; flexible ramp/hold programming.
• RampMaster 3 – Updated version for glass kilns with refined interface.
• Icon+ – Enhanced digital control with expanded profiles and precision.
• TAP II – Smart touchscreen controller with Wi-Fi, data tracking, and remote access.

Hot Shot Kilns

• Novus – “Set & Go” controller: set a target temperature and it does the rest (no segments).
• Spark – Entry-level touchscreen controller with intuitive operation and limited program control.
• TAP II – Smart touchscreen controller with Wi-Fi and real-time monitoring.

Jen-Ken Kilns

• Orton AF3P 3-Button – Reliable and straightforward for basic firing.
• Orton AutoFire 4000 12-Key – Expanded program capacity and fine control.
• Orton AutoFire Slide Touchscreen – Modern, responsive touchscreen interface.
• TAP II Touchscreen Smart Controller – Wi-Fi connectivity and real-time data tracking.

Not all kilns can use a collar, but Olympic’s Hot Box kilns can be ordered with a collar to expand versatility. A blank collar simply adds height to the firing chamber, while a bead collar adds the same height and includes a built-in bead or annealing door for quick-access lampwork projects.

This safety feature automatically cuts power to the heating elements whenever the kiln lid or door is opened. It prevents accidental burns, protects elements, and resumes power only when safely closed. (Also called an automatic lid shutoff on Olympic kilns.)