Requirements of AS-Interface At the lowest control level, sensors, ntactors, motor circuit switches, indicator lamps, pushbuttons etc. which transfer volumes of information in the bit range had to learn to communicate.

The bus systems already in existence were either over dimensioned or simply could not be used for such a task. They used cables that were either too expensive or unsuitable for a direct link to the process (e.g. fibre-optic cable,shielded and non-flexible cable), and the volumes of data transmitted were simply too high. Either the data protocols were non- deterministic or the control electronics used were much too expensive if each binary sensor was to be a bus node and in an automation network there might be any number of them. Over and above that, assembly and installation needed to be as simple as possible, without the need for any special training. The costs for each connection should be low and in keeping with the volume of data to be transferred. In short: AS-Interface had to be able to network binary sensors and actuators and link them to the higher control levels, very simply, inexpensively, and meeting industrial requirements.

The 3WN range of air circuit breakers is available for rated currents from 630 A to 6300A Advantages: compact in size and light in weight reduced heat losses for higher in panel ratings. fully modular construction Extensive range of visual and electrical signals as standard.

The wide range of applications for Sonar-BERO ultrasonic sensors is limited only by the designer’s imagination: Level and height sensing , Distance measurement ,Winding diameter detection, Bottle counting and much more

Distribution Board: Siemens Miniguard Distribution board provides and Commercial Applications. The Range offers a Choice of Incoming devices via Isolators, MCBs or RCCBs and a Choice of Enclosures from four way to twelve way in Single and Double Door Design.

The Siemens low voltage HRC fuses of BS type design have been developed for industrial applications. Due to the special design, they give high rupturing capacity combined with low temperature rise under normal load conditions. The quick acting characteristics of the fuses ensure that under the worst fault conditions, cut-off occurs before the maximum value of fault current is reached, thus reducing the electro-magnetic stresses and fire risk.

MCB: The Siemens Miniguard MCB Protects wires and Cables Automatically Against Overload and Short Circuit in Domestic, Commercial and Industrial Installations. The 5 SQ2, 3 KA MCB is available in a Comprehensive range from 0.5 to 63 A in 1,2,3 and 4 Pole version.

Miniature Circuit Breaker (MCB): The Siemens Miniguard Miniature Circuit Breaker (MCB) Protects wires and Cables Automatically Against Overload and Short Circuit in Domestic, Commercial and Industrial Installations. The common idea behind a miniature circuit breaker is to make a switch that will mechanically turn itself off if overmuch current flows through it. The 5 SQ2, 3 KA miniature circuit breakers (mcb) is available in a Comprehensive range from 0.5 to 63 A in 1,2,3 and 4 Pole version.

Benefits

The bimetal overload relays type 3UA5/6 & 3UC5/6 relays are indigenously manufactured and bring to the users a whole range of benefits, which are a direct result of extensive R & D efforts in design, materials and manufacturing technology. They also incorporate additional features/benefits as a result of feedback from the users of our 3UA19 relays.

Benefits

The salient features of Trip Circuit Supervision Relay are:

Increasingly, the communicationscapable SIMOCODE-DP 3UF5 motor protection and control device is being successfully used worldwide in lowvoltage switchgear systems. It represents the intelligent link between the motor feeder and the process control system. The fact that this state-of-the-art technology is being increasingly used reflects the requirement for increased plant availability but at the same time, cost savings during the onstruction and commissioning of a plant and its operation. This places a wide range of requirements on such an intelligent field device.