TQ2SA-48V-Z

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Signal relays are automatic switches that are used to control electrical loads within a given circuit. They are usually used for relatively small current and voltage signals. The TQ2SA-48V-Z signal relay is a general purpose 2-ampere signal relay that offers multiple features that make it suitable for many applications.

The TQ2SA-48V-Z is a PCB-mount relay with two single pole double throw (SPDT) switch contacts. The coil voltage can be 12 or 24Vdc, with a nominal coil resistance of around 480Ω. The maximum switching voltage and maximum switching current is 48V and 2A, respectively. This device can also be used as a latching or non-latching relay, depending on the application needs.

One of the main advantages of this device is its robust design, which allows it to be used in high-temperature environments. The TQ2SA-48V-Z is built with a durable epoxy insulating material and a reliable contact system, making it ideal for industrial, military, and commercial applications. Additionally, the device has a wide operating temperature range that goes from -20°C to +85°C.

The TQ2SA-48V-Z is also designed with an optional built-in varistor to prevent voltage surges. This feature helps to ensure a longer lifetime of the device and reduces potential damage to the connected circuits. The device is also resistant to shock and vibration due to its robust construction.

The typical operating principle of a signal relay is as follows. A coil is energized when a voltage or current is applied to it, creating an electromagnet inside the coil. The electromagnet then attracts an armature inside the coil, which is connected to one or more switch contacts. The movement of the armature causes the switch contacts to open or close, depending on the default position of the contacts.

In the case of the TQ2SA-48V-Z, the Red and White terminals are the coil terminals, while the Yellow and Black terminals are the Normally Open and Normally Closed contacts, respectively. When the coil is energized, the armature moves and the Yellow and Black terminals switch positions. When the coil is de-energized, the armature is demagnetized and returns to its default position, causing the switch contacts to switch back to their original positions.

The TQ2SA-48V-Z is suitable for a wide range of applications, including control and automation systems, audio/video switching, and industrial controls. In addition to its high switching current and voltage ratings, its rugged construction makes it ideal for use in harsh environments. Its optional built-in varistor protection and wide operating temperature range make it a reliable and durable choice for many applications.

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