Multi-Temperature Trailer Units

Precedent® multi-temp takes the premier trailer platform in the industry and optimizes it for food distribution.

Multi-Temperature Trailer Units

Precedent® S-610M

The Precedent S-610M multi-temp reefer offers CARB Evergreen certification, so no DPF will ever be required.

Precedent® C-600M

Enjoy the benefits of Precedent in a cost-effective, multi-temp package with the C-600M reefer. Plus, it's backed by the Thermo King dealer network.

Precedent® S-610DE

The Precedent S-610DE is a multi-temp reefer that allows for two separate temperature zones in one trailer without the need for remote evaporators. It is also CARB Evergreen, so no DPF will ever be required. 

Photo of trucks at a loading dock with Precedent units

Precedent S-Series: The proven evergreen choice

Developed to achieve Evergreen CARB and EPA emissions compliance while adding performance, the Precedent S-Series is notable for what it does not have: a Diesel Particulate Filter (DPF). When considering the negative impact on engine life and fuel efficiency that a DPF brings, it was clear that a DPF was not a viable solution for units that run in California. Choose the S-Series and you’ll avoid the unknowns and risks of DPFs and can rest easy knowing that you’re running a unit that has been proven over the last decade and is compliant nationwide for as long as you own it.

CARB regulations

Precedent Multi-Temperature Series Product Features

New Condenser Grilles

The new grilles not only provide improved protection from road debris that can impact the condenser coil, but also a stronger, more integrated look for the unit.


Smart Reefer® 4 (SR-4) control system, temperature data logger, ServiceWatch and Optiset® Plus enabled, running and pretrip diagnostics, integrated USB port, and proprietary eco-pulldown technology

Integrated Telematics

Factory equipped with 24 months complimentary TracKing® Telematics

Composite Doors

Composite long-life door panels with auto-latch and auto secondary latch on front doors

X430P Reciprocating Compressor

4 cylinder, 30 cubic inch with 4 quart oil sump, forged steel connecting rods with barring inserts and discharge valves incorporating slug relief springs, integrated internal oil filter, 14.5 lbs. of R452A refrigerant

37 Amp Extended Life Alternator

65 amp alternator and 30 amp battery charger optional

12 Volt Charging

Multiple options in both alternator and battery charger configurations


Totally Enclosed Fan Cooled (TEFC) 5.25 KW rated output, fully potted and protected stator windings, IP55 rated

Evaporator Motor

Totally Enclosed Air Over (TEAO), two-speed operation with up to 3350 CFM due to Smooth Air Blower technology

Remote Evaporators

Supports 1,2, and 3 zone operation with up to four (4) remote evaporators

Multiple Zone Configurations

Choose from numerous configurations within the trailer to best suit your needs.

Choose from numerous zone configurations within the trailer to best suit your needs.

Save money with ThermoLite® solar panels

ThermoLite® solar panels deliver clean, reliable performance resulting in longer battery life, lower fuel consumption, and reduced emissions. Given these potential benefits, ThermoLite solar panels can be an important part of a comprehensive sustainability program for any business.

Telematics for your fleet

Every Precedent TRU comes connected from the factory with a 24-month free TracKing® telematics subscription, making it easier for fleets to monitor and analyze their refrigerated fleet operations.

  • Real-time connectivity
  • Compliance and security
  • Lower costs

Precision temperature control

“Close enough” isn’t what your customers are looking for with their temperature-sensitive cargo. Your unit should perform as you program it to, which is just what Precedent units do. No magic, no averaging, just precise temperature control that helps ensure your loads arrive exactly as they should.


The Precedent S-Series engine was developed to meet both CARB and EPA emissions compliance starting in 2013. It also fulfills all of the newly proposed emissions concepts by CARB. R452A refrigerant is standard in Precedent units. R452A provides a lower Global Warming Potential (GWP) and reduces the carbon footprint of refrigerants used by fleets by nearly 50%. Precedent offers returnable packaging pallets to reuse and save wood.


Additional Resources