603663BY

Series:	*
Part Status:	Active

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Power Relays, Over 2 Amps

Power relays are devices that are commonly used to control an electric circuit by opening or closing it through a switch. They are typically used to control circuits that require more current than can be shed by a mechanical or a solid state switch. Power relays can be divided into two distinct categories: those with contacts capable of carrying currents of more than 2 amps and those with contacts carrying currents of less than 2 amps. The primary distinction between the two lies in the contact construction which has been designed to both handle higher currents and to reduce the effects of contact burning.The 603663BY, as a relay with contacts that can conduct more than 2 amps, is an industrial-grade DC relay with a single action, 2 form-C (2NC/2NO) dynamic contact configuration. It is designed to handle higher currents, up to 28 Amps, thanks to its silver alloy contact construction. Further, its life expectancy on the contact operation is rated at 10,000,000 operations with the life expectancy on the Bifurcated Bifurcated Contacts at 105,000 operations for each contact. The contact arrangement is also designed so as to reduce arcing by electro-migration of the contact metal in the form of droplets to one of the other contact members, and it does not have any form of inherent overtemperature or other protection, thus necessitating either a thermal fuse or manual reset switch.This relay has been designed for applications such as low-voltage rotary motor switching, solenoids, and other applications that require higher currents. It has an internal back-EMF suppression diode, and its coil is rated at 5-12 VDC, 45 ohms, with an operating range of -30 to +85 degrees Celsius. This is a magnetically operated relay, and it’s also designed so that it can be reset electromagnetically. It has an open-frame case style, allowing for ventilation and heat dissipation.The working principle of the 603663BY involves the energizing of the relay coils, and the application of current to the contact spring which leads to the movement of the contact arm, and finally the opening or closing of the electrical circuit. The first phase requires the energizing of the relay coil, which is usually accomplished through the use of a push button switch or other control. Upon making contact with the contact spring, a magnetic field is produced which acts as a mechanical force that moves the contact arm. As the contact arm is moved, it either open or closes the circuit, depending on the contact structure of the device.Overall, the 603663BY is an industrial-grade DC relay capable of handling currents up to 28 Amp. Its contact arrangement is designed to reduce arcing and electro-migration of the contact metal. Its coil is rated at 5-12 VDC and is magnetically operated, allowing for resetting either by the application of its energizing voltage or through the manual reset switch. Its open-frame case provides for necessary heat dissipation and ventilation. In the end, the 603663BY is a relay that should be considered whenever a device is required to handle higher currents.

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