Thermo Scientific ULT2330D Revco Freezer 23.3-cu ft | 659L

  • 208/230 volts, 60 hertz — Product no longer available — Thermo Scientific recommends suggested replacement


  • Simplify operation and increase accuracy with the microprocessor control of Thermo Scientific Revco High-Performance Lab Freezers.
  • Our Revco -30°C and -20°C high-performance freezers are designed for medical and scientific applications such as storage of reagents, pharmaceuticals, biologicals or other commonly used laboratory materials.
    Models offer cabinet sizes to fit a variety of space needs and storage volume requirements.

Key Features:

  • Temperature factory-preset at -20° or -30°C.
  • Capacities from 4.9 to 51.1 cu. ft. (139 to 1447L).
  • Icon-based controls and displays.
  • Large, easy-to-read digital display shows temperature within 1°C.
  • Graphic thermometer is steady green when temperature is normal, flashes top bar for overtemperature, flashes bulb for undertemperature.

Microprocessor Control:

  • Audible/visual warnings for overtemperature, undertemperature, or power failure.
  • Key-operated OFF/ON/ALARM ON master switch for setpoint security.
  • Push-button alarm test.
  • Remote alarm contacts.
  • Alarm silence, ringback, and auto reset.
  • Controller battery backup system.


  • Scratch-resistant cold-rolled steel interior and exterior finishes.
  • High-density, 2" thick (5.1cm) CFC-free urethane foam insulation protects against ambient temperature fluctuations.
  • CFC-free, HFC-blend refrigerant.
  • Single-door models are hinged on right.
  • Full-length door handle and key lock.
  • Doors self-close and lock open at 90°.
  • Adjustable epoxy-coated wire shelves.
  • 1" (2.5cm) dia. access port with plug on undercounter model.

-30°C Freezers Features:

  • Automatic defrost and condensate removal.
  • Sensor automatically initiates defrost cycle on demand, eliminating need for a defrost timer, minimizing frost buildup, and optimizing coil efficiency.
  • Forced-air circulation improves temperature uniformity, provides faster recovery after door is opened.

-20°C Freezers Features:

  • Suitable for applications in which slight intermittent coil warming during an automatic defrost cycle is not desired (such as enzyme storage).
  • Gravity convection air system for maximum stability without a blower or fan.
  • Manual defrost.

Ordering Information:

  • Alarm systems, temperature chart recorders, and power monitors are available separately.


  • Published interior volumes are nominal; usable capacities may be offset by shelves, drawers, blower coils or cabinet protrusions.
  • For specific cabinet dimensions and allowances, or for verification of clearance tolerances, Contact our Customer Service Department for details.


  • Valid in the USA only.


Product Size Each
Certifications/Compliance UL and CUL listed. CE marked.
Capacity (English) 23.3 cu. ft.
Capacity (Metric) 659L
Dimensions (L x W x H) Exterior 37.2 x 28 x 79.2 in. (94.5 x 71.1 x 201.2cm)
Dimensions (D x W x H) Interior 29 x 24 x 58 in. (73.7 x 61 x 147.3cm)
Plug Type NEMA 6-15
Temperature Range -30°C
Voltage 208 – 230V
Doors Single, Solid
Electrical Requirements 208 – 230V 60Hz
Warranty Warranty varies by country, please contact us for details
Amperage 12A
Breaker 15A
Depth (English) Interior 29 in.
Depth (Metric) Interior 73.7cm
Height (English) Exterior 79.2 in.
Height (English) Interior 58 in.
Height (Metric) Exterior 201.2cm
Height (Metric) Interior 147.3cm
Hertz 60Hz
Length (English) Exterior 37.2 in.
Length (Metric) Exterior 94.5cm
Refrigerant CFC-free
Shelves 4
Shipping Weight (English) 425 lb.
Shipping Weight (Metric) 193kg
Temperature Control Microprocessor
Width (English) Interior 24 in.
Width (Metric) Interior 61cm
Cabinet Type Upright
Defrost Automatic
Width (English) Exterior 28 in.
Width (Metric) Exterior 71.1cm


Model Replacement Capacity Plug Type Temperature Range Electrical
ULT430A 4.9 cu. ft., 139L NEMA 5-15 -30°C 115V 60Hz
ULT430D 4.9 cu. ft., 139L NEMA 6-15 -30°C 208-230V 60Hz
ULT1230A TSX1230FA 11.5 cu. ft., 326L NEMA 5-15 -30°C 115V 60Hz
ULT2330A TSX2330FA 23.3 cu. ft., 659L NEMA 5-20 -30°C 115V 60Hz
ULT2330D TSX2330FD 23.3 cu. ft., 659L NEMA 6-15 -30°C 208-230V 60Hz
UGL2320A TSX2320FA 23.3 cu. ft., 659L NEMA 5-20 -20°C 115V 60Hz
UGL2320D TSX2320FD 23.3 cu. ft., 659L NEMA 6-15 -20°C 208-230V 60Hz
ULT3030A TSX3030FA 29.2 cu. ft., 826L NEMA 5-20 -30°C 115V 60Hz
ULT3030D TSX3030FD 29.2 cu. ft., 826L NEMA 6-15 -30°C 208-230V 60Hz
UGL3020A TSX3020FA 29.2 cu. ft., 826L NEMA 5-20 -20°C 115V 60Hz
UGL3020D TSX3020FD 29.2 cu. ft., 826L NEMA 6-15 -20°C 208-230V 60Hz
ULT5030A TSX5030FA 51.1 cu. ft., 1447L NEMA 5-20 -30°C 115V 60Hz
ULT5030D TSX5030FD 51.1 cu. ft., 1447L NEMA 6-15 -30°C 208-230V 60Hz



Thermo Scientific Revco High-Performance Lab Freezers Product Brochure

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