2903276

Turn On Voltage (Max):	--
Coil Power:	--
Contact Material:	Silver Nickel (AgNi)
Operating Temperature:	-40°C ~ 40°C
Termination Style:	Spring Terminal
Mounting Type:	DIN Rail
Features:	LED Indicator, Varistor
Release Time:	20ms
Operate Time:	25ms
Turn Off Voltage (Min):	--
Series:	RIF
Switching Voltage:	440VAC, 250VDC - Max
Contact Rating (Current):	8A
Contact Form:	3PDT (3 Form C)
Coil Voltage:	230VAC
Coil Current:	14.0mA
Coil Type:	Non Latching
Relay Type:	General Purpose with Socket
Part Status:	Active
Packaging:	Bulk

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Introduction

Power relays are a common device used to switch high-power components, controlling their power supply via an electrical connection. 2903276 is a type of power relay with an operating power range over two amps. This relay is of the semi-enclosed type, and is electrically operated by means of an AC or DC coil. It has an array of features which make it suitable for a range of diverse applications.

Principles of Operation

2903276 relays have an operating principle which is based on a solid state design. This means that no moving electronic parts are used, relying instead on electrical signals which are directed to an array of switches. The principle of operation is that an electrical signal from the power supply is directed towards the surrounding contacts within the relay, which then open or close to complete or break the circuit. This circuitry is designed in such a way that, when an electrical potential is applied to the relay\'s coil, the contacts close and the power circuit is completed. The contacts then open when the applied potential is removed from the coil.

Design and Construction

The design of the 2903276 power relay is a semi-enclosed one, meaning that the relay\'s internal components are placed within a housing that is made from a non-metallic material. This material can be a wide range of insulating products, such as polycarbonate, polytetrafluoroethylene (PTFE), or porcelain. This type of design offers a reduced risk of shorting, due to the protective layers of insulation.The exact constructional details for this relay depend on the application it is being used for, although there are a few standard features which are common to many versions. An AC or DC coil is supplied with the relay which provides the initial electrical impulse needed to control the relay\'s operation. This is then connected to the remainder of the relay\'s mechanical components, which are responsible for the opening and closing of the relay\'s contacts.

Features and Benefits

The 2903276 power relays offer a wide range of features and benefits which make them suitable for a range of applications. They are extremely reliable and offer a long operating life of up to 10 million operations. A further feature of this relay is the range of contact configurations it is available in, such as SPDT, 3PDT and 4PDT for multiple contact switching. It also offers a low pickup voltage of just 1 or 2 volts, meaning that the relay can be triggered by a much lower level of voltage than other design options. This type of relay also offers flexibility when it comes to disconnection methods. As the relay\'s contacts are hermetically sealed, it is possible to use a number of disconnection methods, such as mechanical disconnection, manual switch transfer or electrical transfer.

Application Fields

The 2903276 power relays are well suited for a range of applications. They are durable and reliable enough for use in demanding environments, such as motor vehicle body electronics, heating and air conditioning systems, power transmission and distribution networks, and industrial automation. Due to their long lifespan and minimal contact wear, these relays are often used in the testing of high-voltage circuits. By using such relays, it is possible to test the functionality of circuits without having to worry about the contacts wearing out, as is common with older generation relays.

Conclusion

The 2903276 power relay is a highly reliable device, offering an efficient way to control the power supply of high-power components. Its semi-enclosed design ensures that the internal components are well-protected from external damage, whilst its long operational life and wide range of contact configurations make it suitable for use in a variety of applications. Its low pickup voltage and ability to withstand high voltages ensure that it is suitable for use in demanding environments, such as motor vehicle body electronics, power transmission networks, and industrial automation.

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