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  REG670 is a digital protection relay device launched by ABB, and it belongs to the Relion® product series.
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  REC670 is an interface layer measurement and control protection device of the ABB Relion® series.
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  REF545KC133AAAA is a medium-voltage protection relay launched by ABB.
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  REX521BBHGLB01C is a microprocessor-based protection relay developed by ABB based on the RED500 platform.
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  RED521 1MRK002003-BA is an industrial-grade core module that integrates operation maintenance, data management, and communication functions.
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  REL551 1MRK002480-AE is a high-performance integrated protection relay under ABB’s Relion® series.
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  REF615C_E HCFFAEAGABC2BAA11E is a core feeder protection and control device in the ABB Relion® product family 615 series.
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  UNITROL 1020 is the core product of ABB’s UNITROL 1000 series, positioned as a compact digital automatic voltage regulator (AVR).
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  HIEE305098R0001 is an industrial communication interface module launched by ABB.
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  SDCS-CON-2-COAAT is an industrial-grade controller coating board under ABB’s SDCS series.
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  PPD517A3011 is an industrial-grade excitation central controller launched by Swiss company ABB.
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  B5LA HENF327886R0001 is an industrial-grade audible and visual alarm indicator launched by ABB.

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