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History of technology

Read about the milestones we have taken in the past to achieve the performance of our latest DIN rail power supplies.

If you are interested in our company history please click here.


FIEPOS is the product family for field power supplies from PULS.

Market launch of the new FIEPOS product family

PULS presents the new product family FIEPOS (FIEld POwer Supplies). It is a unique power supply system with protection class IP54 or IP65/IP67 which can also be mounted on the DIN rail. The innovative and decentralized system comes with a large selection of different connectors, an optional IO-Link communication interface and various versions with current limited outputs.

FIEPOS offers great flexibility, reliable protection against water and dust while maintaining an eco-friendly design. The field power supplies even feature power reserves of up to 100% for 5 seconds.

The FIEPOS Basic series offers one DC output and is available with 300W or 500W output power. The Basic units can be easily connected in parallel, to increase total output power or realize a reliable redundant system. The FIEPOS eFused series features up to four current-limited DC outputs. These devices make it easy to implement selective power distribution, protection and monitoring directly in the field.

Learn more about FIEPOS


DIN rail power supplies DIMENSION CP series

Expansion of DIMENSION C series

PULS has expanded its C Series with efficient 120W, 240W and 480W power supplies. All CP5, CP10 and CP20 power supplies are setting new benchmarks in terms of efficiency, reliability and size in their respective performance classes.

Learn more about the C series


SmartFab Box – Application analysis

SmartFab Box – Application analysis
It’s not a typical product – but a very important tool for the development process of all our upcoming products. It helps to works out a clever strategy for digitization.

The SmartFab Box is an application analysis tool, which records the power requirements and thermal conditions in customer systems and facilities.


PIANO product family introduced

The new PIANO product family, which was designed especially for the Asian market, goes into serial production. With this new milestone, the PULS engineers prove that it is possible to combine high quality with basic functionality and a lower price level.

PIANO product family overview


PULS CP10.241

Launch of the CP10.241

PULS introduces the CP10 the worldwide first 240W DIN rail power supply with an efficiency of >95%, a width of 39mm and an extraordinary lifetime of 120,000 hours.

CP10.241 product details


CPS20 with new technology platform

PULS presents the CPS20, a technology platform with new high-performance and particularly reliable devices from the DIMENSION range.

CPS20 product details


UB20.241 with regulated output voltage

PULS presents the new UB20.241, a control unit for DC-UPS with regulated output voltage. The UB20.241 is used in combination with a 24V power supply and batteries to bridge power failures or voltage fluctuations. This configuration can prevent expensive downtimes, long restart cycles and loss of data.

A unique feature of the UB20 series is the constant voltage in battery mode, which will not change as the batteries discharge. The buffer voltage in battery mode can be set to four different output values. Another feature is the utilization of two independent battery chargers for the two 12V-batteries in series. This feature makes matching batteries unnecessary and allows for precise battery charging, testing and optimized usage of the battery capacity to achieve the longest battery service life.

Learn more about the UB20.241


Introduction of the new QS40.241

The most outstanding features of the DIMENSION QS40.241 DIN rail power supply are its high efficiency and compact size, which are achieved by a synchronous rectification, a bridgeless PFC circuit and additional unique design details.

The 24V 40A DIN rail power supply for 1-phase systems comes with a wide-range input. Large power reserves of 50% and built-in large sized output capacitors support the starting of heavy loads such as DC motors or capacitive loads. High immunity to transients and power surges as well as low electromagnetic emissions allow the usage of the QS40.241 in nearly any environment.

Learn more about the QS40.241


PISA protection modules launched

PULS presents the PISA protection module to the public. The PISA 4-channel protection modules with DIN rail mounting are designed for cost effective current distribution and protection of 24V load circuits.

PISA protection modules


XT40.241 with a semi-regulated concept

PULS presents the XT40.241 as the newest addition to the DIMENSION X series. The DIN rail power supply includes a new and innovative concept for generating an isolated DC voltage from a three-phase AC mains system.

The XT40.241 with an output voltage of 24V and 40A output current features a semi-regulated concept which ensures a very compact design. The maximum efficiency of 95,5% results in lower operational costs for the end user.

Learn more about the XT40.241


The DC-UPS system is introduced

PULS introduces a new efficient, compact and reliable DC-UPS system which ensures the highest system availability. The uninterruptible power supplies are available with capacitor storage or VRLA batteries and thus result in powerful and compact solutions.

DC-UPS units with integrated double-layer capacitors are absolutely maintenance-free and guarantee an uninterrupted power supply in a matter of seconds.

Learn more about PULS’ DC-UPS systems


Product family DIMENSION introduced

The first models of the new DIMENSION product family are launched. This series sets new global standards in terms of efficiency, lifetime, reliability and extremely small dimensions.

DIMENSION product family overview


MiniLine power supplies launched

The MiniLine power supplies are introduced to the market. The DIN-rail power supplies are optimised for low and medium power range from 15W to 100W. The units have a rugged plastic housing and are highly efficient, compact and reliable.

MiniLine product family overview


SilverLine product family introduced

SilverLine product family is introduced to the market. Since then the SilverLine with their characteristic metal housing has been proven millions of times in the power range from 40 to 960W. The products of this family were the technological pioneers for our latest product families DIMENSIONPIANO and MiniLine.

PULS introduces the flyforward converter, which extends the usable power for flyback converters from 150W to 1000W. In addition, the company succeeds the Increase of the efficiency from 89% to 92%.

SilverLine product family overview


More technological innovations

Significantly smaller and more efficient products are introduced to the market in 1996, further cementing PULS’ role as technological market leader.


First DIN rail power supply

PULS shows the first DIN rail power supply as a prototype in November 1990 at the trade fair electronica in Munich.


4kW power supply unit launched

PULS takes up series production of a high-frequency interference-free 4kW power supply unit. This endeavour had previously been considered to be technically impossible.


New test procedure in production

PULS introduces the procedure of in-circuit testing in its production in order to prove the correct testing of the electronic assemblies. In-circuit testing focuses on testing the components and the electrical connections on an assembled circuit board.

The use of the in-circuit test procedure guarantees an optimal and comprehensive inspection of the power supplies within the manufacturing process.


Efficiency breakthrough

Breakthrough regarding the efficiency, which is one of the most important marks of quality in the field of switched-mode power supply technology. With a 5V / 50A power supply PULS achieves an efficiency of more than 85%.


The ARES (Adaptive Reset) converter is used for the first time in mass production of PULS power supplies.

Use of ARES converter in mass production

The ARES (Adaptive Reset) converter is used for the first time in mass production of DIN rail power supplies.

In the same year PULS introduces the first fully automated functional tester in production and is thus the first user in Europe. A functional tester is a test system that checks the power supply units or components for their functionality. This process guarantees a high level of quality, reliability and efficiency.


Thermal design for DIN rail power supplies

As early as 1984, PULS already focused on the thermal design of its power supplies which has always been a decisive factor in the development and manufacturing process. To this day PULS remains true to this design principle for all of its products.

The thermal design, also known as “cool design”, offers great advantages like a compact form factor of the power supplies and an optimal heat regulation. The result of this design are efficient, durable and visually appealing DIN rail power supplies.


First 19-inch switched-mode power supply

First 19-inch switched-mode power supply

PULS introduces the first 19-inch switched-mode power supply unit, using the great potential of SMPS (Switch Mode Power Supply) technology.

The company is developing a new generation of power supplies that solves many problems of the existing concepts. This is achieved through various improvements such as the use of high-quality opto-couplers, a primary-side current measurement for higher efficiency and the use of a flyback converter.