ALZ21B05

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Power Relays, Over 2 Amps

The ALZ21B05 relay is a popular choice for applications that require switching of higher current applications, such as motors, lights and lighting systems. The ALZ21B05 has the capability to switch 8A at up to 230V, making it ideal for current loads up to 2 Amps.

The ALZ21B05 relay\'s robust design features an ultra-fast on/off response time and can switch with signal pulses of only 14 microseconds, making it ideal for applications that require fast and reliable switching of high currents.

The ALZ21B05 relay is also highly reliable, offering a typical MTBF (Mean Time Between Failures) of up to 2,000,000 hours. A thermally coupled sensing mechanism ensures the device will always operate within safe operating temperature limits, helping to maximize its life expectancy.

The design of the ALZ21B05 allows it to be integrated into a wide variety of electric control systems, such as PLCs, HMI monitors, and other control systems. The ALZ21B05 features four voltage and/or current contacts rated up to 8A at 230V AC/DC, as well as a maintenance or "test" contact, all of which can be used for either normally open or normally closed operations. The contacts can also be configured for latching and/or time-delay operations.

The ALZ21B05 also features built-in protection that guards against hazardous conditions like overvoltage, shock hazard, contact bounce, and unpredictable power surges. An LED light is provided for indication of power on/off, and an adjustable potentiometer allows for easy adjustment of the operational properties of the relay.

In terms of its workings, It can be explained as follows. The ALZ21B05 is a combined electromechanical and electronic switching relay. The relay is controlled by an electromagnetic force generated by an on/off signal. At rest, the uncharged relay core is held in a fixed position by a built-in magnetic latch. A positive voltage acts upon the relay\'s coil, causing the relay to energize and the plunger to rise; meanwhile, the magnetic latch disconnects the core and the contacts open. When the voltage is removed, the plunger is forced down by gravity, and the magnetic latch reconnects the core to its original position, closing the contacts.

The ALZ21B05 is versatile and easy to install, making it suitable for all types of commercial, residential, and industrial uses. It is a perfect choice for applications ranging from high-end industrial control systems to low-cost consumer electronic devices.

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