Address: Schunk Carbon Technology Limited
Richardshaw Drive
Grangefield Industrial Estate
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Delivering Safe and Reliable Smart Charging Systems for Bus

For over 100 years the Schunk Group, founded by Ludwig Schunk, has been a global leader in the development, manufacture and application of carbon and ceramic solutions by combining innovation and technological expertise.

Schunk Transit Systems develop pioneering innovative e-mobility solutions. Leading automotive industry manufacturers trust in our technological expertise.

Schunk products have been in continual daily use across the world, operating over many millions of miles on thousands of vehicles delivering safe and reliable charging interfaces for public transit.

Our components are helping to make modern e-vehicles safer, more efficient, and more environmentally-friendly. Our innovative Schunk Smart Charging system is the key to integrating this into everyday operations – by optimizing the range and charging times of the batteries.

Schunk strives to achieve long-term successful partnerships through customer focus and commitment. Our expertise in conductive high-power transfer from grid to vehicles in rail and transit places Schunk in a unique position to develop innovative solutions to the emerging needs of the electric vehicle manufactures and operators.

Charging Technology for Electric Buses

Schunk designs and produces innovative roof-mounted and inverted pantographs for reliable charging of electric buses.

A range of EN50696 compliant, innovative pantographs providing fast automated charging in depot, opportunity charging or pulse charging during operations.

Compatible with OEM charging stations, Schunk provides interfaces for roof mounted charging rails or overhead dome connection.

Used worldwide from Winnipeg to Barcelona, Helsinki and London, electric bus manufacturers and operators choose Schunk’s current collectors.

Roof Mounted Pantograph

The Schunk SLS102 and SLS103 roof mounted pantographs both employ the 4 pole connection sequence to assure safety of connection. (DC+ / DC- / PE / CP) for the 1000A charging capability.

A high operating range of 2.2m with contact tolerance allows for bus kneeling and varied parking positions.

The spring force operated automated deployment delivers a raising and lowering time of 10s/5s in a cost effective common solution for both depot and opportunity charging.

The SLS103 is an articulated compact pantograph, developed to fit in a reduced roof space and lower mounting height under 400mm.

Inverted Pantograph and Depot Charger

Mounted in overhead masts or charging gantry, the inverted, top down SLS201 is operated remotely from the vehicle.

A 2.2m operating range enables both conventional height and double decker buses to be charged in the same position.

Vehicles can be charged in compact parking with no cables. Synchronised and sequenced charging can be delivered from the charging station to numerous vehicles parked overnight.

The ETL and BAA certified SLS301 overhead 600A charging pantograph is the first step towards autonomous depot charging.

Interface to vehicles is achieved with charging rails, or a contact dome fitted to the roof.

HPC Roof Mounted Rail

Vehicles with low roof profiles can be fitted with the 1000A HPC charging rails.

Heat is dissipated over the large surface area of the rail. A 24V heating system is available. HPC slotted rails can accommodate multiple cable connections for ease of installation and routing of cabling.

Smart Charging Technology for Public Transport

Battery-powered buses and other vehicles will increase in number as more municipalities ban diesel engines in favour of zero-emission.

The innovative Schunk Smart Charging system is key to integrating this into everyday operations by optimizing the vehicles range and charging times.

With its smart charging solutions, Schunk is defining new standards in the market segment for conductive, fully automatic recharging of electric buses.

Innovative roof-mounted and inverted “top down” mast mounted pantographs deliver reliable battery charging during a journey or at a depot within seconds. Used in 25 countries, our charging technologies deliver reliable charging worldwide, from Winnipeg to Barcelona, Helsinki and London, electric bus manufacturers choose Schunk’s current collectors.

Opportunity Charging – Intelligent E-Bus Charging System

Opportunity Charging refers to short transfer of charge at strategically installed fast charging facilities.

Using either a roof mounted pantograph on the vehicle, or an inverted pantograph mounted in a charging mast.

Communication between the vehicle and charger initiates pulse charging while waiting at stops with automatic tolerance compensation for parking position.

This charging process provides an advantage for the long range bus, reducing the size, weight and cost of batteries.

Schunk’s latest automatic charging device allows fast and efficient docking of vehicles of different heights in depot. Overnight charging in the depot reduces the amount of energy required. The devices can be made simpler, lighter, more compact and economical.

Automated Electric Bus Depot Charging

Vehicles parked under the overhead charging system use automatic signalling to start a charging connection. No additional personnel are required.

The charging current is supplied from the top down equipment via a contact strip counterpart installed on the vehicle roof.

Buses parked closer together, in smaller parking areas can benefit from an efficient overnight charging alternative to plug-in chargers.

The systems have a service life of ten to fifteen years, significantly more durable than plug-in solutions.

The pantograph (Depot Charger SLS301) can be used for low current, slower overnight charging cycles making the devices smaller and simpler.

We Put You in the Fast Lane

Our Engineers brought their core competencies to bear early in the development of new e-mobility solutions.

Now you can benefit from our advantage. We cover an entire range of components for fast charging systems for multiple vehicle types.

We call this Schunk Smart Charging – our unique portfolio of
charging solutions that can be tailored and individually optimally
integrated into your e-bus infrastructure.

Read more

Schunk News

Three Reasons Why Depot Charging Reduces Costs

Three Reasons Why Depot Charging Reduces Costs

The new depot charger SLS301 from Schunk enables an automated and economical charging of electric buses in the depot.

Efficiently Charging Electric Buses On the Line and in the Depot

Efficiently Charging Electric Buses On the Line and in the Depot

Krakow invests in 50 Schunk pantographs that efficiently charge their electric bus fleets on route and at the depot.

Schunk Videos

Schunk Images


Schunk Bus Fleet Krakow

schunk-inverted panto-round

Schunk Inverted Pantograph – Round


Schunk Depot Charger


Schunk Krakau Roof Mounted Pantograph

schunk-inverted panto

Schunk Inverted Pantograph


Schunk Inverted Pantograph Rails

schunk-roof-mounted panto

Schunk Roof Mounted Pantographs

Schunk Social

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