
CargoMaster - Electric stair truck C400
The CargoMaster C400 is the professional solution for the safe and effortless transport of heavy loads up to 400 kg – both on stairs and on flat surfaces, indoors and outdoors.
Thanks to its electric drive technology, it replaces the effort of several people and minimises back strain and downtime.
Its electrically adjustable lift allows the centre of gravity to be optimally balanced, which makes transport on stairs and long distances considerably easier. The integrated lift also allows convenient loading and unloading of vehicles, shelves or pallets – without the need for an additional crane or lifting device.

TRANSPORT HEAVY LOADS SAFELY UP AND DOWN STAIRS
CargoMaster C400 - electric stair climbing lift truck
The infinitely adjustable speed of the C400 and two user-friendly climbing modes offer flexible usage options:
Continuous climb mode: In this mode, the C400 continuously climbs the stairs in one go. This allows for quick and efficient stair climbing.
Single step mode: At the touch of a button, the CargoMaster can be switched to single stage mode, making a short stop after each stage. It only continues when the user presses the up or down switch again. This mode is ideal for beginners or when particularly precise control is required for narrow stairwells or sensitive loads.
Ergonomically designed, flexibly adjustable handles allow individual adjustment to the user's height or the size of the goods to be transported, which further simplifies transport and increases comfort.

Ready for every challenge - in any application sector
The automatic safety brake stops the device at every edge of the stairs, ensuring maximum safety. The powerful battery enables a running time of 10 to 20 floors, depending on the load, and can be quickly recharged via the mains charger.
The scope of delivery includes the CargoMaster C400 with integrated lift, a lashing strap, the battery pack and the charger. Additional accessories make the C400 even more flexible, allowing it to be used optimally in various transportation applications.
The C400 is the ideal partner for a wide range of industries and applications:
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Vending Automaten
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Motor transport
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Switch cabinet construction
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Slot machines
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Heating engineer
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Stove builder
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... and much more!
With its versatile functions, the CargoMaster C400 is the ideal solution for anyone who regularly needs to move heavy or bulky goods safely and efficiently – whether in commerce, logistics or trade.

HEAVY DUTY CLIMBING SYSTEM
CargoMaster C400
The C400 is your reliable partner when it comes to transporting loads quickly, safely and easily up and down stairs. With a load capacity of up to 400 kg, it effortlessly transports even very heavy and bulky equipment to its destination. Whether as a stair climber or lift truck, the CargoMaster can be used as a transport aid both over steps and on level ground. The powerful electric stairclimber is powered by a high-performance battery that can be charged via the mains adapter.
Load capacity
Steps per minute
Floors per battery charge*
*At a maximum load of 400 kg in stair-up operation. With an average load of approx. 75 kg, the range increases to approx. 20 floors with one charge of the battery. More details can be found in the user manual.
Advantages that convince
The CargoMaster C400 electric load stair climber sets new standards in terms of ease of use, efficiency and safety. Its innovative features make the daily transport of demanding loads a real added value for your company.

up to 400 kg over stairs

Step edge braking system per wheel

HEAVY DUTY

up to 400 kg over stairs

Step edge braking system per wheel

For improved user- experience
Solid rubber tires
The solid rubber tires make the CargoMaster puncture-proof - even when the wheels are subjected to heavy continuous loads. Various pneumatic tires are available as an option.
Flexible use
Whether indoors or outdoors, on straight or spiral staircases - the CargoMaster is a strong partner in any environment.
Center of gravity adjustment
Thanks to its height-adjustable bucket, the C400 makes it easy to adjust the load's center of gravity, making the transport of heavy goods more stable and safer.
The CargoMaster in action
Would you like to find out more about the CargoMaster?
The all-rounder for professionals
Transporting heavy loads up stairs is one of the most difficult transport situations. Often, it requires two or three people to get properly stuck in. You can also benefit from our more than 30 years of expertise in stair climbing. The CargoMaster stair climbing unit protects your back and minimises the risk of accidents.
Profitable & economical
The CargoMaster protects your back and quickly becomes an indispensable assistant for stair transportation.
Efficient & professional
By using the CargoMaster, one person is often enough to transport even heavy loads quickly and safely.
Simple & uncomplicated
Thanks to an extensive range of accessories, our stair climbers can be converted quickly and often without tools.
Focus on safety & quality
AAT is the only manufacturer to offer “maximum safety” as standard! All models are equipped with our step braking system.
Consultation & free demonstration
An individual and personal consultation is our top priority. AAT offers you a dense network of competent sales representatives throughout Germany who will be happy to advise you on all questions relating to the right CargoMaster for your requirements.
Would you like to find out more about our CargoMasters? Then request a non-binding offer or make an appointment for a free on-site demonstration.

GOOD HEALTH PAYS OFF
BG BAU subsidy for electric stair climbers!
Invest in health and safety at work: BG BAU supports the purchase of ergonomic work equipment with attractive occupational safety subsidies. When you purchase an electric stair climber from our CargoMaster range, you will receive a subsidy of up to €700 – quickly and easily.
Our electric stair climbers relieve your employees, minimise accident risks and meet the highest modern occupational safety requirements.
✔️ Eligible for BG BAU funding
✔️ Secure a subsidy of up to €700
✔️ Personal advice on applying
Find out more now and take advantage of the funding – your health pays off!

Technical data CargoMaster C400
Max. Lifting capacity | 400 kg |
Steps edge brake system per wheel | ✓ |
Single step mode | ✓ |
Climbing speed per minute (1) | 3 - 7 steps |
Range with one battery charge (Ø 75 kg) (1) | approx. 20 floors |
Range with one battery charge (Ø 350 kg) (1) | approx. 10 floors |
Direct current motor | 24 V / 275 W |
Standard battery (2) | 2x 12V/ 5Ah |
Width / depth in mm | 1509-1869 / 566 / 790 |
Battery weight | 4,1 kg |
Total weight incl. battery | 86,1 kg |
(1) Climbing speed and range may decrease with increasing weight. Range determined in pure up-stairs mode.
More technical data can be found in the user manual.



Frequently asked questions (FAQ):
The CargoMaster C400 can transport loads of up to 400 kg up and down stairs. This high load capacity makes it ideal for particularly heavy and bulky objects, such as machines and large appliances, which need to be moved safely and efficiently.
The electrically adjustable load fork of the C400 can be lowered or raised to optimally adjust the center of gravity of the transported goods. This flexible adjustment facilitates maneuvering on stairs and on level ground and ensures better stability during the entire transport.
The CargoMaster C400 has safety features such as a safe braking system that enables controlled deceleration and prevents the load from sliding down in an uncontrolled manner. This function provides additional safety for both the operator and the transported goods.
Thanks to its high load capacity and flexibly adjustable load fork, the C400 is perfect for industrial applications in which heavy goods regularly have to be moved up and down stairs. It is particularly suitable for warehouses, workshops and construction sites where different loads need to be transported safely and efficiently.
Yes, we offer free demonstrations including test drives with the CargoMaster C400. This allows you to test the mobile stair climber under real working conditions and see its performance and handling for yourself. Simply make an appointment with our sales team to arrange a free, no-obligation demonstration at your company.
Yes, we offer comprehensive instruction in the operation of the CargoMaster C400 when the stair climbers are delivered. This training covers all the necessary safety precautions, efficient driving and correct battery charging. Our more experienced employees are on hand to answer any questions you may have.