sitron electrical components Germany sitron model sitron price

sitron electrical components are fuses that can be operated multiple times, known in Japan as permanent fuses. Immediately after interrupting an overload or short-circuit current, the fusible element automatically restores to its original state. The housing is made of austenitic stainless steel, with a beryllium oxide ceramic core embedded in the center. The space between the stainless steel and the ceramic core is filled with glass to seal and secure the ceramic core. The fine pores of the ceramic core are filled with metallic sodium as the fusible element, and the void behind the piston is filled with argon gas to compress the metallic sodium. Under normal operating conditions, current can enter from the lead terminal A, pass through the metallic sodium in the fine pores of the ceramic core, conduct to the stainless steel housing, and exit via the output terminal B. When a short-circuit current passes through the fuse, it rapidly heats the metallic sodium in the fine pores of the ceramic core, causing it to change from a solid to a high-temperature, high-pressure plasma vapor. The resistivity increases rapidly, thereby strongly limiting the short-circuit current and interrupting it instantly. When the interruption ends, the metallic sodium vapor immediately returns to liquid and solid states, while the argon gas pushes the piston again to compress the metallic sodium, re-establishing the circuit connection.

sitron electrical component principle

Photoelectric sensors achieve control by converting changes in light intensity into changes in electrical signals. Generally, a photoelectric sensor consists of three parts: a transmitter, a receiver, and a detection circuit. The transmitter emits a beam of light toward the target; this beam typically originates from a semiconductor light source, such as a light-emitting diode (LED), laser diode, or infrared emitting diode. The beam is emitted continuously or with modulated pulse width. The receiver comprises photodiodes, phototransistors, or photocells. Optical components such as lenses and apertures are mounted in front of the receiver. Behind it is the detection circuit, which filters out valid signals and applies them.

sitron electrical component structure

A generator typically consists of components such as the stator, rotor, end covers, and bearings. The stator is composed of the stator core, winding coils, frame, and other structural parts that secure these components. The rotor consists of the rotor core (or magnetic poles, yoke), windings, retaining rings, centering rings, slip rings, fan, and shaft. The bearings and end covers connect and assemble the stator and rotor of the generator, allowing the rotor to rotate within the stator. This motion cuts magnetic flux lines, thereby generating induced electromotive force, which is led out through terminal blocks and connected to the circuit to produce current.

sitron electrical component features

Utilizing existing DIN rail terminal block screw connection technology and adding circuits composed of electronic components, optoelectronic transmission coupling is achieved. The core of automatic control requires that the control unit be reliably isolated from various sensors and actuators to prevent interference. Sanmenwan WUKG9 optocoupler terminals effectively fulfill this function, ensuring that field signals match the low voltage required by electronic control devices. They can also serve as interface components between peripheral equipment for process control and control, signal, and regulator devices, and are suitable for different voltage and power ranges. Optocoupler terminals offer advantages such as low signal loss at the control end, high switching frequency, no mechanical contact bounce, wear-free switching, high insulation voltage, resistance to vibration, independence from mounting position, and long service life, leading to their widespread application in the field of automatic control.

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