Please login to your online account to display your discounted pricing

Thermo Scientific™ TSX Series Ultra-Low Freezers

Thermo Scientific™ TSX Series freezers feature outstanding sample protection and energy efficiency. V-drive technology provides temperature uniformity and significant energy savings

Manufacturer: thermo scientific™  TSX400A

 View all options for this product

Catalog No. TSX400A

 Please call Customer Service at 1-800-234-7437 or send an email to for assistance.

Description & Specifications


Capacity (English) Shelf 165 lbs.
Backup Systems CO2 or LN2 (optional)
Capacity (Metric) Shelf 73.4kg
2ml Vial Capacity per Freezer 40,000
Access Security Keylock Standard, Padlock Compatible
Chart Recorder 7-day Ink or Inkless (Optional)
Certifications/Compliance UL
Description TSX Series Ultra-Low Freezers
Amperage 16/20
Capacity 19.4 cu. ft. (548L)
Defrost Manual
Depth (English) Interior 27 in.
Depth (English) Exterior 37.8 in.
Depth (Metric) Exterior 96cm
Depth (Metric) Interior 68.8cm
Display Touch-Screen LCD
Door Count 1 outer, 2 inner
Door Shelves 3
Dimensions (L x W x H) Exterior 37.8 x 32.2 x 78 cm (96 x 81.8 x 198.1 in)
Dimensions (D x W x H) Interior 27 x 23.2 x 51.2 cm (68.6 x 58.9 x 130 in.)
Height (English) Interior 130 in.
Height (English) Exterior 198.1 in.
Height (Metric) Exterior 78cm
Height (Metric) Interior 51.2cm
Hertz 60Hz
Holds 400 2-in. boxes
Length (English) Exterior 96 in.
Insulation Water-blown foam
Model 400A
Length (Metric) Exterior 37.8 cm
Plug Type NEMA 5-15
Shipping Weight (English) 760 lbs.
Shelves 3
Shipping Weight (Metric) 354 kg
Temperature Range -50°C to -86°C
Temperature Range (Metric) -50°C to -86°C
Width (English) Exterior 32.2 in.
Width (English) Interior 23.2 in.
Width (Metric) Exterior 81.8cm
Width (Metric) Interior 58.9cm
Electrical Requirements 115V/60Hz
Footprint (English) 8.46 sq. ft.
Footprint (Metric) 0.79 m2
Inner Doors 2
Operating Modes Standard or High-Performance
On-Board Datalogging Standard
Plug NEMA 5-20
Smart View Compatibility Smart-Vue Compatible
Setpoint Security Standard - Individual user names
Vial to Footprint Ratio (English) 40,000 2mL vials
Vial to Footprint Ratio (Metric) 67,600 1mL vials
Warm up Time -80 C to -50C 255 min.
Weight (English) 730 lbs.
Weight (Metric) 332 kg

Thermo Scientific™ TSX Series ultra-low temperature freezers are designed with features that support sample protection and sustainability objectives. The Series' V-drive technology is designed to provide temperature uniformity that continually adapts to the lab’s environment, offering significant energy savings without compromising sample protection.

  • Two capacities: TSX600 stores up to 600 2-inch boxes while the TSX400 stores up to 400 2-inch boxes 
  • Reduce energy usage by additional 10-18% by switching from -80C to -70C setpoint (6.5 kWh/day for TSX400 and 7.8 kWh/day for TSX600)*
  • Choice of standard or high-performance modes offering significant energy savings over conventional refrigerant ultra-low freezers*
  • Outstanding door-opening recovery time (17 minutes for TSX400 and 24 minutes for TSX600)*
  • Warm-up time (from -80°C to -50°C) in 303 minutes (TSX600); 250 minutes (TSX400)*
  • Natural refrigerants for lower environmental impact and higher cooling efficiency
  • Water-blown foam insulation, eliminating chemical emissions and reducing the out-gassing common in other foam products
  • Whisper quiet operation allowing the freezer to be used directly inside the lab (47.5 dBA for TSX400 and 45.5 dBA for TSX600)*
  • Intuitive touch-screen user interface featuring alarm status, door-opening status, temperature status, environmental conditions and back-up system status
  • All TSX Series freezers are manufactured in a zero waste to landfill facility
*Data on file.