“There are no reviews yet — be the first to share your experience.”Your company · August 26, 2026

Photos of the actual unit are provided before shipment on request.
Relay 7SR2303-1NA22-0CA0
MLFB / Order No.: 7SR2303-1NA22-0CA0Product Description
HIGH IMPEDANCE PROTECTION RELAY CIRCULATING CURRENT (4 POLE FUNCTIONALITY) E8 CASE, 4 CT, 19 LEDS, 19 BINARY INPUTS/ 16 BINARY OUTPUTS MEASURING INPUT: 1/5A, 50/60HZ Auxiliary voltage: 24 - 250 V DC / 100-230 V AC Binary input threshold 88 V DC (rated: 110-250 V DC) . USB FRONT PORT, RS485 REAR PORT + REAR F/O CONNECTORS (X2) AND IRIG-B PROTOCOL: IEC 60870-5-103 AND MODBUS RTU AND DNP 3.0 (USER SELECTABLE SETTING) . PROTECTION FUNCTION: 3 PHASE HIGH IMPEDANCE DIFFERENTIAL (87/50) HIGH IMPEDANCE RESTRICTED EARTH FAULT (87REF) MEASURED EARTH FAULT (50G) 3 PHASE CT SUPERVISION (CT50) TRIP CIRCUIT SUPERVISIOR (74TC) PROGRAMMABLE LOGIC . .
- ManufacturerSiemens
- Product NameRelay 7SR2303-1NA22-0CA0
- Order Number7SR2303-1NA22-0CA0
- Product DescriptionPower Component for power-system and substation automation applications.
- Voltage250 V DC
- Current5A
- Frequency60 Hz
- CategoryEnergy and Power Systems > Protection Relays and Grid Protection
- Phases3
- CertificationsIEC
- StandardIEC 60870-5-103
- InterfaceMODBUS
- HS Code (8-digit, Preliminary)85364900
- OriginGermany
- Warranty12 months
Related
Often Ordered Together
Pressure Transmitter 7MF0301-1QE01-5BF2-Z A00+B13+E20+H02
View Details
CUSTOMER FEEDBACK
Trusted by industrial purchasing teams.
Verified sourcing support, clear communication and export-ready delivery for Relay 7SR2303-1NA22-0CA0.
SHARE YOUR EXPERIENCE
Purchased this product from us?
Your feedback helps other industrial buyers. Reviews are checked before publication.