Transformer-rectifiers: custom-made to suit your requirements.
Nothing is as individual as the structure you need to protect from corrosion, so take advantage of our years of experience when designing the specifics of your protective system. We develop the right custom-made solutions for your requirements. The name Steffel stands for the best know-how in cathodic protection and for durable transformer-rectifiers.
SteProtec transformer-rectifiers: durable and proven in the field.
Structures that need protection from corrosion are different in nature. The corrosion protection measures required have to be determined on a case-by-case basis. Steffel’s SteProtec series offers you a range of different units with varying power ratings to provide individually designed cathodic protection. There are 3 features, however, that all SteProtec units have in common: durability, sturdy construction and quality. The protective systems you get from us are a perfect fit: from compact rectifiers for tanks and vessels and rectifiers for steel hydraulics and offshore structures all the way to switching cabinet style multi-output units for industrial facilities.
- Available in all the usual power ratings
- A suitable transformer-rectifier for every conceivable use
- From very compact units (e.g. tank protection) to surface-mounted enclosures (e.g. pipeline protection) and switching cabinet style multi-output units for industrial facilities.
- Air-cooled for normal operational and environmental conditions, or oil-cooled for harsher conditions
- Available in a variable transformer version or electronic, and both have the option of stepless remote control adjustment
- Potential, voltage or current regulation available upon request

Remotely controlling your protective current
With cathodic protection from Steffel, you get a complete system of individual components interacting in perfect harmony. But Steffel wouldn’t be Steffel if we were willing to stop there! We also offer the practical, user-friendly advantages of remotely controlling protective current in all the areas where CP is used. The CP system’s direct communication with Steffel’s ISM2010 remote monitoring unit makes this possible. And we can also retrofit conventional transformer-rectifiers so that they can be controlled remotely. Take advantage of remotely controlled protective current from Steffel.
- Available in all the standard power ratings.
- For all areas in which CP is used
- Remote control of conventional transformer-rectifiers (retrofitting)
- Available to be mounted on variable transformer spindle or as an electronic TR unit
- Continuously variable adjustment
- Direct communication with the Steffel ISM2010 remote monitoring unit
- Full system integration into the Steffel MS2010 CP Management System

Main office Lachendorf:

Steffel KKS GmbH
Im Bulloh 6
29331 Lachendorf
Tel: +49 5145 9891-0
Fax: +49 5145 9891-90
Email: kks@steffel.com
Office Oldenburg:

Steffel KKS GmbH
Zeppelinring 38
26197 Großenkneten
Tel: +49 4435 933530-0
Fax: +49 4435 933 530-290
Email: kks@steffel.com
Office Berlin:

Steffel KKS GmbH
Freiheitsstraße 124-126
Entrance B
15745 Wildau
Tel: +49 3375 210202-0
Fax: +49 3375 210202 290
Email: kks@steffel.com
Office Bielefeld:
Steffel KKS GmbH
Im Bulloh 6
29331 Lachendorf
Tel: +49 5145 9891-0
Fax: +49 5145 9891-90
Email: kks@steffel.com
Office Würzburg:
Steffel KKS GmbH
Von-Richthofen-Straße 3
97232 Giebelstadt
Mobile: +49 151 44149305
Fax: +49 5145 989190
Email: kks@steffel.com
Office Greece:
Immartek Ltd
#4, Fragoklissias Str. Building B , 151 25 Marousi , Athens
Tel.: +30 210 619 7815
Fax.: +30 210 619 8838
Email: immartek@otenet.gr
Office Sprockhövel:
Maurmann GmbH
Hombergstraße 33c
45549 Sprockhövel
Tel: +49 2324 9000-03
Fax: +49 2324 9000-05
Email: info@maurmann.com