Built In Britain

Truck Road & Standby 7.5 Tonne

Introducing The Truck Road & Standby

The J501 (Single phase) or J503 (Three phase) are cost-effective box body refrigeration systems available in both 12v & 24v for 7.5 tonne temperature controlled vehicles where overnight standby is required. Suitable for boxes up to 6m long, it allows you to carry more products by offering temperature control without an independent diesel drive unit. It is class leading in performance, lightweight with distinctive stylish looks.

A vehicle engine driven compressor powers the units. Compressor mount kits are available for a wide variety of vehicles. An in-cab controller with digital display monitors and controls the temperature and defrosting whilst providing a constant load space temperature readout. The stylish aerodynamic design utilises plastic covers for the condenser and the evaporator. A vehicle engine driven compressor powers the units on truck drive.

Features & Benefits

Technical Specification

Below are the standard options for this refrigeration system. If you require something different, please call GAH on 01394 421140 to discuss your requirements with an application specialist.

Type Chilled Frozen Heat-Cool Flexi VLA
Road & Standby

Applications & Compatabilities

Please note these guides are offered as an approximation only. For confirmation and a more detailed quotation, please contact one of our application specialists.

The J501 (Single phase) or J503 (Three Phase) is for frozen or chill applications where a full defrost is required. The standby can be specified as either single or three phase. The choice of model can be affected by the product to be carried and the number of door openings per working day, the mains supply available and the way the system is used. If in doubt, please talk to a GAH Applications specialist for clarification.

The following assumptions have been made:

  • Ambient temperature 30°C
  • Chilled ‘K’ Factor is 0.7 W/M²/°C
  • Frozen ‘K’ Factor is 0.4 W/M²/°C
  • Drop duration is 3-5 minutes
  • Frozen ‘K’ Factor is 0.4 W/M²/°C
  • Drop duration is 3-5 minutes

Chilled (0–3°C) up to 3 drops per hour
(24 in an 8 hour day 30 m³ maximum)

Frozen (–18°C) up to 2 drops per hour
(16 in an 8 hour day, 24 m³ maximum)

Maintenance & Aftersales

GAH One Call

A single contact number for fast & effective service & support for customers, suppliers & installation partners

GAH One Call

Call Us Now
+44 (0)1394 421140


We have a range of maintenance options, which have been designed to suit the diversity of our customers’ applications.


More details of all service and maintenance options are available at the link below.

Find Out More

Service Plans

A range of annual service options designed to reflect & meet the needs of different customers’ applications, budgets & to help control on-going service costs.

Service Plans

More details of each service plan are available at the link below.

Find Out More

GAH Connect

Our real-time fridge fleet dashboard harnesses the power of mobile data to deliver extensive information in real time, vehicle-by-vehicle, minute-by-minute.

GAH Connect

To gain access please use the button below to login to our fleet managers dashboard.


Latest News


We are delighted to announce the appointment of Nathan Underwood, a highly experienced industry figure, as Strategic Account Manager within our sales and customer service...


Join us in Hanover! We have so much to share on innovation in refrigeration! Units for electric & hybrid vehicles, WLTP-compliant undermounts, fleet management systems...


So good to see the work of everyone at GAH recognised with the award by Sdiptech Group for “Great Performer 2021”. Accepting the award Director...

Business Michael Kane, newly appointed refrigeration director

GAH have strengthened their senior team with the appointment of Michael Kane to the new position of Refrigeration Director. Michael comes to us with a...