Import24 DC contactor-Where to buy

24 DC contactorLike electromechanical relays, they have physical contacts that are mechanically driven to open/close paths. However, for reed relays, their contacts are much smaller and of much lower quality than those in electromechanical relays. Dry reed relays are made of coils wound around reed switches. FET switches provide a fast, low-cost solution, but are limited to operating at low voltages.A magnetic reed switch consists of two overlapping ferromagnetic blades (known as magnetic reeds) that are sealed inside a glass bag filled with inert gas. The overlapping ends of reeds have contact. When the coil is energized, the two springs are pulled together, forming a path through the relay at their contacts. When the coil is powered off, the spring force in the spring will pull the contacts apart.

Due to smaller contacts, lower weight, and different actuators, the switching speed of reed relays is about 10 times faster than electromechanical relays with the same rated value. The mechanical lifespan of reed relays is also higher than that of electromechanical relays. However, the compromise solution is that the smaller contacts on the reed relay make it more susceptible to arc damage when closing the circuit. When the arc jumps across the contact point, a small portion of the contact surface will be melted. If the contacts remain closed during the re solidification of the melting section, they may be welded together. After turning off the driving current, the spring force in the spring is usually insufficient to mechanically disconnect the weld seam, which makes the relay unusable. Electromechanical relays may also be damaged due to arcing, but the energy required to cause this situation is much higher.

Due to the high susceptibility of reed relays to contact damage, surge currents from system capacitors can be particularly dangerous. Surge current can be controlled through the series impedance between relays and capacitors, such as resistors or ferrites. Any capacitor in the system can cause surge currents, whether it is in the tested electrical resistance device or from shielded cables.

constitute24直流接触器The ferromagnetic material gives them a higher thermoelectric potential than equivalent electromechanical relays.The C60 series solid-state relay adopts advanced design and can switch very heavy loads in a physically small 6-pin micro DIP package. These relays have a power field-effect transistor output, ensuring low on resistance, no offset voltage, and low leakage current. In addition to switching DC loads, the universal C60 can also switch AC and bidirectional loads. Therefore, reed relays are not an ideal choice for extremely low voltage applications, as their thermoelectric potential may introduce sufficient noise, leading to measurement errors.

The small size and high speed of reed relays make them an ideal choice for many switch applications. Compared to general modules, reed relays are more common on matrix and multiplexer modules.