REX521
PublishedFeeder Protection Relay
ABBElectrical & LightingProtection RelayIndustrial supply
ABB REX521 feeder protection relay. Rated frequency 50/60 Hz; current inputs 0.2 A / 1 A / 5 A; voltage inputs rated 100/110/115/120 V; DC operating range 80-265 V DC.
Wholesale supplyREX521
No public pricingPriced per agreement on volume and market. Send your quantities — Kaysan replies with availability and wholesale terms.
Product identity6 fields
Item nameFeeder Protection Relay
Item number / codeREX521
BrandABB
Product lineIndustrial supply
CategoryElectrical & Lighting
Product typeProtection Relay
Technical data14 rows
BrandNew
Rated voltage100 V / 110 V / 115 V / 120 V
Voltage100 V
Burden<20 W
Current inputs Rated current0.2 A / 1 A / 5 A
Input impedance<750 mΩ / <100 mΩ / <20 mΩ
Input voltage, AC110/120/220/240 V (PS_87H only)
Input voltage, DC110/125/220 V (PS_87H), 24/48/60 V (PS_87L)
Internal overtemperature indication+78°C (+75…+83°C)
Operating range, DC80…265 V DC
Rated frequency50.0/60.0 Hz
Ripple in DC auxiliary voltageMax. 12% of the rated DC value (IEC 60255-11)
Sensor inputs voltage range RMS9.4 V RMS
Voltage inputs rated voltage100 V / 110 V / 115 V / 120 V (parametrization)
Reference numbers1 public
ABBREX521