G5Q-1 DC12

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Power relays are essential components of electrical designs for controlling high current circuits. The G5Q-1 DC12 power relay from Omron is a widely used, reliable, and versatile unit, ideal for many applications. To understand the proper applications and working principles of the G5Q-1 DC12, and to make the most of its capabilities, it is important to understand its features and specifications.

Features and Construction
The G5Q-1 DC12 is a single pole double throw (SPDT) power relay. It is equipped with a diode protection feature and also includes standard interface options: Quick Connect, 6.3 mm spade terminals and 2-pin solder terminals. The G5Q-1 DC12 has a die-cast aluminum housing, making it particularly resistant to shocks and vibrations. Furthermore, it is suitable for operating temperatures between -40°C and +85°C, and is resistant to humidity and dust.

Specifications
The G5Q-1 DC12 is a 12 Volt DC relay capable of handling up to 20 Amps of power. The contact form is a single-pole, double throw design, and the coil is rated at 10.5 VDC/700 ohms. The contact resistance is rated at 50 mΩ. The maximum switching voltage and current are 127VAC/50A (general use) and 200VAC/45A (specially designed). The contact material is silver cadmium oxide, with a mechanical life span of 10 million operations and an electrical life span of 100,000 operations. The operating time is 8 ms and the release time is 6 ms.

Application Field
The G5Q-1 DC12 is a versatile power relay suitable for a variety of applications. It is commonly used in switching circuits such as fuel pumps, car washers, hot water systems, and other circuits where the current must be switched on/off. It is also used as a switch in equipment protection devices, such as automatic shutters and circuit breakers. It frequently appears in applications that rely on continuous operation, such as home automation systems, fire alarm systems, and medical equipment.

Working Principle
The G5Q-1 DC12 power relay is an electromechanical device. When current is applied to the relay coil, it produces a magnetic field. This field moves the mechanical armature from its resting position, thus activating the contacts. When the current is interrupted, the armature returns to its resting position, de-activating the contacts and interrupting power. The G5Q-1 DC12’s diode protection feature ensures that the contacts re-allocate opposite to their previous setting on de-activation, reducing the risk of electrical arc formation.

The G5Q-3 DC12 from Omron is a versatile and reliable power relay, suitable for many applications. Its construction and specifications lend it to switching circuits, equipment protection, and other applications involving sustained operation. Its working principles are simple enough that any DIYer or professional electrician can easily understand and use it for their projects.

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