Coupling Relays and Signal Converters When standard controllers with their standard inputs/outputs reach their limits, coupling relays and interface converters come into their own. A wide selection of coupling relays and interface converters is available for the electrical isolation of I/Os and PLC inputs and outputs, signal amplification or reproduction as well as conversion to different voltage levels or signal forms. We offer the appropriate solution for all requirements.
Coupling Relays (3RQ3)
Slim + Compact
For optimum use of space in the control cabinet
6.2 mm width / requires little space on the DIN rail
Interface Converters (3RS70)
For analog standard and universal signals
For analog signal transmission to a PLC
Measuring instruments in a control cabinet door ++
Coupling Relays (3RQ2)
Overvoltage and EMC protection of controllers
Permanent wiring due to removable terminals in screw-type or spring-type connection system
Labeled terminal covers permit simple assignment during wiring
In industrial housing
Power Relays (3TG10)
Solution for performance range below S00
For confined spaces (width only 36 mm)
Flexible installation/ position independent
For switching large loads: high power rating (20A/400V AC) ++
We offer a diverse range of coupling technology for electrical isolation, amplification and signal adjustment between the controller and I/O. Thanks to their wide voltage supply range, the coupling relays can be used worldwide without any problems. With their new titanium gray design, the slim SIRIUS 3RQ3 devices present a uniform look that matches that of other SIEMENS switching devices in the control cabinet.
The 3TG10 power relays come as the ideal solution for all applications requiring small, low-noise relays or contactors at low costs. The power relays are suitable for basic controls and particularly for use in large-scale series devices and controls. They are ideal for applications which require only one auxiliary contact and no overload relay – and place increased requirements upon switching capacity, switching voltage and service life.
3RS70 Interface converters are used for electrical isolation or conversion of analog signals. Passive and active converters are available, as well as 3-way isolation modules. With a wide variety of dip-switch settable conversion ranges and only 6mm wide, these compact rugged relays are the perfect solution for converting voltage signals to current signals for transmission over long distances, analog signals to frequency signals for incompatible input/output schemes and protection of PLC inputs from over-voltage and short-circuit. These versatile relays are available with screw or spring terminals, optional LED and semiconductor versions.
Coupling Relays 3RQ3