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RA5 Interface Relay for ABB A-Line Contactors Overview

4,781 views · Published 12 September 2012 · 2:16 · Indexed 1 November 2026

Channel: GalcoTV · 2012 · Science & Technology

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This video gives a brief overview of the ABB RA5 Interface Relay.  Buy the item featured in this video at 800-337-1720 or visit: http://www.galco.com/buy/ABB/RA5-1?source=YouTubeText

Buy the ABB A-Series Contactor featured in this video at: http://www.galco.com/buy/ABB/A16-30-10-84?source=YouTubeText

ABB's RA 5-1 interface relay is designed to receive 24 V d.c. signals delivered by PLC's or other sources with a low output power and to restore them with sufficient power to operate the coils of the relevant A 9 ... A 110 contactors or the N... contactor relays.

RA 5-1 interface relay is made up of a miniature electromechanical relay equipped with a N.O. contact and with a low consumption 24 V d.c. coil. The interface relay coil is controlled by the PLC while the N.O. contact ensures switching of the power contactor. Coil switching gives rise to overvoltages which have adverse effects on the electronic devices, insulators and, more generally, on component lifetime. The RA 5-1 is equipped with surge suppressors:
-- on the 24 V d.c. relay coil via a diode,
-- on the power contactor coil via a varistor.
The RA 5-1 is also protected against relay pole reversal by a diode inserted between the E1 and E2 input terminals.

For more ABB Interface Relays visit:  http://www.galco.com/shop/ABB-Interface-Relays-Interface-Relays?source=YouTubeText

To find more ABB Control Relays go to: http://www.galco.com/shop/ABB-Control-Relays?source=YouTubeText

And to view the full line of ABB Products available at galco.com visit: http://www.galco.com/find/ABB?source=YouTubeText

Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & Electronic Automation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands;  Engineered Systems Integration, Retrofits & Upgrades for Variable Speed Drives, CNC, PLC Systems, Dynamometers & Test Stand Applications.   Visit us online at http:// www.galco.com or call us at 800-337-1720.

http://www.galco.com/safety

With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of:  i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended,  and all laws, rules and regulations implemented in relation thereto;  ii)  the National  Electric Code®;  and  iii) NFPA 70E®.  Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.

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