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Lütze’s philosophy is to supply an appropriate, easy to integrate suppression solution for all contactors commonly used in rail vehicles. So our product range now contains numerous versions for different types and voltages, most of which can be mounted directly on the contactor. For example our S7A model, which among others can be mounted directly on to AEG Type LS4, LS7, SH4, SH8 and SH14 as well as various ABB types, and is used in hundreds and thousands of applications.

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Lütze diode gates are a universal aid when it comes to saving space when using decoupling or freewheeling diodes. The wired version helps to minimise the wiring, e.g. when decoupling interference signal systems.Wirable versions with up to 22 individual diodes offer maximum flexibility for the widest range of applications, e.g. the Lütze triple diode module 72068: it requires minimum space on the top hat rail, just 6.2 mm, and yet it provides three wirable diodes of type EM513 (1 A/1600 V), which can be connected via spring-type terminals.

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Optimum wiring options are provided by three plug-in spring-type terminals available to each pole of the six wirable diodes on this diode module. At a width of just 22.5 mm, it is possible to resolve many suppression or decoupling tasks which would otherwise require complex wiring via the terminal block.

These modules resolve numerous installation problems in the simplest way possible. They form the base for installing resistors, diodes or special function relays on to the top hat rail. At the same time they provide a secure connection via the integrated spring-type terminals. To ensure that everything fits in the best way possible, different models are available with a variable number of connection points and insertion locations.

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These 6.2 mm relay couplers are closely trimmed to the efficient design of frame-type switchboards

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Available with plug-in or integral relay, each contains a changeover contact which can be wired from the top using spring-type terminals (top connection technology)

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Each connection also has a contact for a comb type jumper bar to connect vector groups or to apply potential levels. This ensures that the wiring is clear and simple

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The couplers are driven via DC 24 V or DC 110 V

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The two changeover contacts in this unit are controlled via 16 selectable functions

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Times from 0.05 s to 100 h are available

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The flexibility of this universal device is completed by the wide range power supply which enables AC or DC operation between 24 V and 240 V.

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Mechanical switching elements that are operated frequently require regular maintenance; contacts can burn out where there are high currents in DC operation and inductive loads. Non-contact switching elements such as these 20 A semiconductor switches provide a remedy

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Lütze can supply semiconductor switches with up to 100 A switching current for the most diverse tasks. So circuits that are opened and closed frequently, such as those that drive hydrobrakes, can be made maintenance-free

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Due to the integrated control stage, even the highest currents can be switched directly from the control technology.

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In order to connect the different analogue signals inside a vehicle to the control technology, Lütze offers a range of transducers which are exactly tailored to rail vehicle requirements. The transducer for monitoring the on-board electrical system enables the on-board voltage of DC 0-200 V to be monitored using one control input for signals from 0-10 V. At the same time it provides galvanic isolation between the on-board voltage and the measurement signal.

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Efficient: The power amplifiers are connected directly to the temperature regulators. All that’s left is to connect the PT1000 sensors and heating elements, no complex wiring is required between the regulator and thermostat.

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Compact: One device serves up to four independent heating circuits. One power output is available for each heating circuit; this can take a load of up to 10 A.

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Cost effective: The ability to dispense with a lot of individual devices and simplify the wiring brings considerable potential savings.

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On vehicles with 110 V on-board voltage it’s often necessary to provide a simple DC 24 V supply voltage for small consumers. With a wide range of suitable DC/DC converters, Lütze can supply numerous tailored solutions from 6-50 W. So for example, our smallest version supplies DC 24 V, 6 W in a compact design for top hat rail mounting.

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Special tasks require tailored solutions. If our extensive range does not offer the right solution for your task, just talk to us. Based on our extensive experience in electronics for rail vehicles, we can develop the right component for your
project too. One example is the drive module 716227, which converts a control signal from the control technology system into three output signals. Two of the outputs are available as non-contact semiconductor outputs and the third output serves as a relay contact.