251-1 - ALSTOM - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

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Become part of our mission to advance intelligent manufacturing. We provide a platform where professional growth aligns with sustainable impact. Beyond a rewarding career, our unique program for controller recycling and education extends the value of technology while cultivating future talent. Together, we can ensure that technological progress and environmental stewardship grow hand in hand.

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251-1

251-1 - Overcurrent Protection Relay

Compact digital relay for LV/MV systems, featuring:

IDMT/instantaneous OC & earth fault protection

1A/5A CT inputs

Modbus communication

open

TEL：+86 13600179521
Mail：info@hongkongeasy.com
info@hongkongeasy.com

Parameters

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251-1 (AREVA/Alstom) Key Parameters:

Type: Overcurrent & Earth Fault Relay

Rated Current: 1A/5A (CT Secondary)

Voltage Supply: 24-250V AC/DC

Protection Functions:

IDMT/DT OC (50/51)

Earth Fault (50N/51N)

Outputs: 4x Relay (SPDT)

Comms: RS485 (Modbus)

Accuracy: ±2% (Current), ±0.5% (Time)

Standards: IEC 60255, ANSI C37.90

Temp Range: -25°C to +70°C