Thermo Scientific TSD40400D Freezer TSD 23-cu ft | 651L

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



  • Microprocessor Controls: Centralized, knee level information center, including microprocessor control and monitoring system ensures all controls and displays are easy to reach and read.
  • State-of-the-art, refrigeration system: Improves temperature control and increases reserve BTUH capacity, resulting in a more stable temperature sample.
  • 1" (25mm) access ports: Allow for the use of inexpedient probes or instrumentation.
  • Secure inner doors: Four inner doors reduce cold air loss and improve temperature recovery after door closings.
  • Power Management System: Low voltage surge protection and buck/boost.
  • Easy to remove, washable filter: Provides protection from dust on the condenser, causing reduced refrigeration performance and increased risk to samples.
  • Simplified installation: New, easy-roll 2 inch locking casters.
  • Single-hand operation: Easy-to-use, padlock-compatible, ergonomic door handle with integrated key lock.

Rugged Construction:

  • Heavy gauge, cold-rolled steel cabinets: Powder-coat paint finish for a uniform exterior that resists chipping and rust.
  • Glaveneel interior.
  • 5" (127mm) foamed-in-place, polyurethane insulation: Reduces power consumption, maintains temperature setpoint and combined with triple-point door gasket, provides longer holding time in the event of a door opening.

Optional Features:

  • CO2 or LN2 back-up: Choice of CO2 or LN2 safety back-up systems for additional sample protection in the event of a power or mechanical failure.
  • Chart Recorder: Built-in chart recorder can be installed at knee level on TSD -40°C models.


  • Valid in the USA only.


Product Size Each
Capacity (English) Shelf 150 lb.
Backup Systems CO2 or LN2 Optional
Capacity (Metric) Shelf 68kg
Access Security KeyLock, Padlock Standard
Chart Recorder 7-day Ink or Inkless (Optional)
Data Outputs dry contacts – standard, PT100 probe Optional
Description Capacity: 23 cu. ft. (651.3L); Holds 400 boxes; 208-230V/60Hz; 12A
Capacity (English) 23 cu. ft.
Capacity (Metric) 651L
Dimensions (L x W x H) Exterior 38.9 x 40.8 x 78 in. (98.9 x 103.6 x 198.1cm)
Dimensions (D x W x H) Interior 25.3 x 30.6 x 51.23 in. (64.3 x 77.7 x 130.8cm)
Plug Type NEMA 6-15
Temperature Range -10° to -40°C
Type Ultra Low Freezer, Upright
Voltage 208 – 230V
Doors Single
Electrical Requirements 208 to 230V 60Hz
Footprint (English) 11.02 sq. ft.
Footprint (Metric) 1.02 sq. meters
Inner Doors 4
Interior Painted Galvaneel – Standard, Stainless-steel – Optional
Line Voltage Indicator Buck/Boost
Operating Modes Standard Operation
On-Board Datalogging Not Available
Regulatory Approvals UL
Smart View Compatibility Smart-Vue Compatible
Setpoint Security Not Available
Vial to Energy Ratio 2.10 watts/100 2mL vials (box)
Vial to Footprint Ratio (English) 3630 vials/cu. ft.
Vial to Footprint Ratio (Metric) 39216 vials/cu. m
Voltage Compensation Buck/Boost
Weight (English) 850 lb.
Weight (Metric) 385kg
Water Cooled Optional
Warranty Warranty varies by country, please contact us for details
Product Line Thermo Scientific
Amperage 12A
Display Push Button LED
Hertz 60Hz
Holds 400 boxes
Insulation Polyurethane Foam
Shelves 3
Shipping Weight (English) 900 lb.
Shipping Weight (Metric) 408kg
Vial Capacity 40,000 x 2mL


Model Replacement Series Temperature Range Plug Type Capacity (2-inch boxes) Electrical
TSD40240A TDE40040FA TSD -10° to -40°C NEMA 5-20 13 cu. ft., 368L (240) 115V 60Hz
TSD40240D TDE40040FD TSD -10° to -40°C NEMA 6-15 13 cu. ft., 368L (240) 208-230V 60Hz
TSD40320A TDE50040FA TSD -10° to -40°C NEMA 5-20 17.3 cu. ft., 490L (320) 115V 60Hz
TSD40320D TDE50040FD TSD -10° to -40°C NEMA 6-15 17.3 cu. ft., 490L (320) 208-230V 60Hz
TSD40400A TDE60040FA TSD -10° to -40°C NEMA 5-20 23 cu. ft., 651L (400) 115V 60Hz
TSD40400D TDE60040FD TSD -10° to -40°C NEMA 6-15 23 cu. ft., 651L (400) 208-230V 60Hz



Thermo Scientific TSD Series -40°C Upright Ultra-Low Temperature Freezers Product Brochure

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