How does it reach -94°F?

With a dual cascade system: two Copeland compressors in series. The first circuit (R-134a) pre-cools, and the second (R-23) takes the temperature down to the ultra-low range. The controller is a Thermo King MP3000.

How much does each model hold?

The 10' holds 4 pallets and a 19,290 lb (8,750 kg) payload. The 20' holds 10 pallets and 42,990 lb (19,500 kg). The 40' holds 20 pallets. All three run from -94°F to +14°F (-70°C to -10°C).

What power does it need?

440–480V three-phase at 60Hz, with a maximum draw of 19 kW. If your site only has 220V three-phase, a step-up transformer is required.

How long does installation take?

Delivered in under 60 days and installed in 2–5 days. No construction is required, and it connects directly to your production or export line.

Does it meet pharmaceutical standards?

Yes. It supports Good Distribution Practice (GDP) compliance with temperature validation and auditable ZTrack logs from origin to destination.

What is a Super Freezer used for?

Sashimi-grade seafood such as tuna and crab, vaccines, APIs, plasma and biological material, cultures and enzymes, semiconductors, and research, such as test chambers for scientific instruments.

Super Freezer

Name: Super Freezer
Brand: ZGROUP

Ultra-low -94°F storage for sashimi-grade seafood, pharma and lab testing. In 10', 20' and 40'.

View models

-94°F

lowest temperature

10' · 20' · 40'

sizes

Sashimi-grade

seafood quality

Pharma GDP

good distribution practice

What is a Super Freezer?

A Super Freezer is an ultra-low temperature freezer unit that reaches -94°F (-70°C), built for applications where a conventional freezer (-4°F to -40°F) isn't enough. It uses dual cascade technology with two Copeland compressors in series: the first circuit (R-134a) pre-cools, and the second (R-23) takes it down to the ultra-low range. At -94°F, microbial and enzymatic activity is effectively halted, preserving color, texture and potency. It installs with no construction and deploys fast.

Super Freezer 10'

Compact model for lower-volume operations that need freezing down to -94°F. High airflow and easy integration with your production line.

Payload

19,290 lb

Temperature

-94°F to +14°F

Max power

19 kW

Success stories

Super Freezer Pasadena, CA, USA

Research university · astronomy

No lab equipment offered the volume and thermal stability needed to validate the infrared detectors of a new wide-field telescope. A ZGROUP Super Freezer became the ultra-low temperature test chamber, giving the research team a stable -85°F environment at the scale of a full instrument.

-94°F

capability

Antarctic

proof testing

Lab-grade

thermal stability

Technical specifications

Model

External dimensions (ft)

LengthWidthHeight

Internal dimensions (ft)

LengthWidthHeight

Capacity

SF10

10'

9'6"

7'6"

8'2"

4 Pallets

SF20

20'

9'6"

17'10"

7'6"

8'2"

10 Pallets

SF40

40'

9'6"

37'5"

7'7"

8'4"

20 Pallets

Power required

440–480V · 3PH · 60Hz

Refrigerant

R-134a + R-23 (cascade)

Temperature range

-94°F to +14°F

Controller

Thermo King MP3000

Dual cascade down to -94°F

Two Copeland compressors and two refrigerants (R-134a + R-23) working in series. Stable ultra-low temperatures with the volume of a container, not a lab freezer.

Features

01 / 05 · Dual cascade compressors

Total control with ZTrack

Your cargo under control from anywhere, without walking out to the unit.

24/7 monitoring

Temperature, humidity and door status in real time.

Remote control

Change the set point from your phone or computer.

Instant alerts

Notified the moment anything drifts out of range.

Audit-ready logs

Automatic history for food-safety compliance.

Discover ZTrack

ztrack.app · demo view

Unit 20RH · 2041Online

Temperature

-0.4°F

Humidity

85%

Door

Closed

Last 24 hSet point -0.4°F

Defrost completed2 h ago
Door open 3 min — alert sent5 h ago
Set point changed to -0.4°Fyesterday

Frequently asked questions

When your product needs to be held colder than -40°F. A conventional freezer runs between -4°F and -40°F; the Super Freezer reaches -94°F (-70°C), the range used for sashimi-grade tuna, vaccines and biological samples, and lab testing.