TIEMAN electrical components Germany TIEMAN model TIEMAN price

TIEMAN electrical components are fuses that can be operated multiple times, known in Japan as permanent fuses. Immediately after interrupting 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. Glass filler between the stainless steel and the ceramic core provides sealing and secures the ceramic core. Metallic sodium is filled into the fine holes of the ceramic core as the fusible element, and the void behind the piston is filled with argon gas to press the metallic sodium. Under normal operating conditions, current can enter from lead terminal A, pass through the metallic sodium in the fine holes of the ceramic core, conduct to the stainless steel housing, and exit via output terminal B. When short-circuit current passes through the fuse, it rapidly heats the metallic sodium in the fine holes of the ceramic core, causing it to change from solid to high-temperature, high-pressure plasma vapor. The resistivity increases rapidly, thereby strongly limiting the short-circuit current and interrupting the current instantly. When the interruption ends, the 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.

TIEMAN electrical component classification

Thyristors have various classification methods: (1) Classification by turn-off, conduction, and control methods: Thyristors can be divided into conventional thyristors, bidirectional thyristors, reverse-conducting thyristors, gate turn-off thyristors, BTG thyristors, temperature-controlled thyristors, and light-controlled thyristors, among others. (2) Classification by pins and polarity: Thyristors can be divided into two-pin thyristors, three-pin thyristors, and four-pin thyristors based on their pins and polarity. (3) Classification by package type: Thyristors can be divided into three types based on their package: metal-packaged thyristors, plastic-packaged thyristors, and ceramic-packaged thyristors. Among these, metal-packaged thyristors are further divided into bolt-type, flat-type, and round-case types; plastic-packaged thyristors are divided into types with heat sinks and without heat sinks. (4) Classification by current capacity: Thyristors can be divided into high-power, medium-power, and low-power thyristors based on current capacity. Typically, high-power thyristors mostly use metal casing packages, while medium- and low-power thyristors mostly use plastic or ceramic packages. (5) Classification by turn-off speed: Thyristors can be divided into conventional thyristors and high-frequency (fast) thyristors based on their turn-off speed. (6) Zero-crossing triggering - generally for power regulation, i.e., triggering occurs when the phase of the sinusoidal AC voltage crosses zero; triggering must occur at the zero-crossing point to conduct the thyristor. (7) Non-zero-crossing triggering - the thyristor can be triggered to conduct regardless of the AC voltage phase; common examples include phase-shift triggering, which changes the output percentage by altering the conduction angle (phase angle) of the sinusoidal AC voltage.

TIEMAN electrical component classification

Classification by application: toggle switches, band switches, record/playback switches, power switches, selector switches, limit switches, control switches, changeover switches, isolating switches, travel switches, wall switches, intelligent fire protection switches, etc. Classification by structure: micro switches, rocker switches, toggle switches, slide switches, push-button switches, key switches, as well as fashionable membrane switches and dot switches. Classification by contact type: Switches can be divided into a type contacts, b type contacts, and c type contacts based on contact type. Contact type refers to the relationship between the operating condition (pressing the switch) and the contact state, specifically "contacts close after operating (pressing) the switch." Suitable contact types should be selected based on the application. Classification by number of switches: single-control switches, dual-control switches, multi-control switches, dimmer switches, speed control switches, splash-proof boxes, doorbell switches, sensor switches, touch switches, remote control switches, smart switches, card-insertion power switches, and dedicated bathroom heater switches.

TIEMAN electrical component classification

Plug-in fuses are commonly used at the end of lines for short-circuit protection of distribution branch circuits or electrical equipment. Screw-type fuses have a fuse indicator on the upper cap of the fusible element; once the element blows, the indicator pops out immediately and can be observed through the glass hole on the ceramic cap. They are commonly used in machine tool electrical control equipment. Screw-type fuses. Enclosed fuses are divided into filled and unfilled types. Filled fuses generally use square ceramic tubes containing quartz sand and the fusible element, offering strong breaking capacity. Unfilled enclosed fuses enclose the fusible element in a sealed cylinder, having slightly lower breaking capacity. Fast-acting fuses are mainly used for short-circuit protection of semiconductor rectifier elements or rectifier devices. Since semiconductor components have very low overload capacity and can only withstand large overload currents for extremely short periods, short-circuit protection requires fast-acting fusing capability. The structure of fast-acting fuses is basically the same as that of filled enclosed fuses, but the fusible element material and shape differ; it uses a silver sheet stamped with a variable cross-section fusible element featuring V shaped deep grooves. Fast-acting fuses are commonly referred to as "fast fuses," characterized by fast fusing speed, high rated current, strong breaking capacity, stable current-limiting characteristics, and small size. Self-resetting fuses use metallic sodium as the fusible element, which has high conductivity at room temperature. When a short-circuit fault occurs in the circuit, the short-circuit current generates high temperature, causing the sodium to vaporize rapidly. The gaseous sodium exhibits high resistance, thereby limiting the short-circuit current. After the short-circuit current disappears and the temperature drops, the metallic sodium restores its original good conductivity. Self-resetting fuses can only limit short-circuit current and cannot truly interrupt the circuit. Their advantage is that the fusible element does not need to be replaced, allowing repeated use.

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