8937990000

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Solid State Relays (SSRs) are a type of switching device that controls a load current by using an electronic input signal. SSRs are an alternative to electromechanical relays, and have a number of advantages, such as a lower risk of mechanical failure, less electric noise, and no moving parts. SSRs are available in a range of sizes and voltage/current ratings and are commonly used in automation and industrial applications.

The 8937990000 is a multi-channel, single-input, solid-state relay with a maximum voltage rating of 12/24V DC or 250V AC (125V DC). It operates from a 5-12V control voltage and can control up to 5 channels with a maximum load of 16A. It has a wiring screw and DIN rail mounting option.The 8937990000 SSR consists of a pair of switching elements, a control circuit, an optical isolation, an aluminium heat sink and lighting resistors. The switching element is a TRIAC, which is triggered by a Zero Cross Detecting Circuit.

The control circuit of the SSR is connected to the input side of the optical isolation to receive the input signal. The U-V Trigger circuit then switches the Two-Quadrant TRIAC, which controls the load current on the output side of the SSR. When the input voltage reaches 10mV or above, the optocoupler LED lights up and the TRIAC is triggered by the U-V circuit. This activates the two quadrants in the TRIAC, which allows the load current to flow. When the input control voltage drops below a certain level, the optocoupler LED turns off and the current flow is stopped.

The 8937990000 SSR has an LED indicator, which signals when the output is on or off. This indicator can be used as a troubleshooting tool to identify potential issues with the relay. The optical isolation of the SSR provides a high isolation voltage rating, which is usually in the range of 5kV to 10kV. The SSR\'s aluminium heat sink helps to dissipate heat generated by the load current.

The 8937990000 SSR is a reliable switching device, which offers several advantages compared to traditional electromechanical relays. It has no moving parts, so there is less risk of mechanical failure, and it generates less electric noise. It also offers a high level of protection, with a high isolation voltage rating and a dedicated LED indicator. Furthermore, this relay is easy to install and use with its screw and DIN rail mounting option. This makes it a great choice for a variety of industrial and automation applications.

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