Energy and Power Systems

Protection Relays and Grid Protection

Siemens protection relays and grid protection covering protection relay and grid-protection families for feeders, transformers, motors, generators and transmission systems.

Siemens protection relays and grid protection covering protection relay and grid-protection families for feeders, transformers, motors, generators and transmission systems.

Included series and legacy categories: 7SJ, 7UT, 7UM, 7SR, 7SD, 7SK, 7SA, 7PG, 7PA, 7SS, 7VK, 7SL, 7SG, 7SN, 7SV, 7UW, 7VU, 7VH.

This category brings current and legacy Siemens product families together so users can compare components for new projects, maintenance, retrofit and replacement requirements.

Model & Order Number

Models and MLFB Order Numbers

Order No. (MLFB)Model / TypeDescriptionStatus
7SD5225-2AB99-9CJ0 L0S+M0G+N0G 7SD TWO TERMINAL DIFFERENT. RELAY WITH 4-LINE DISPLAY MEASUREMENT INPUT: IPH = 5A; IE = 5A AUXIL. VOLTAGE: 24V TO 48V DC BINARY INPUT THRESHOLD 19V FLUSH-MOUNTING HOUSING WITH SCREW TERMINALS 1/2 X 19", 8 BI, 15 BO, 1 LIVE-STATUS CONTACT REGION WORLD,LANGUAGE UK-ENGL. (LANGUAGE CHANGEABLE) PORT B: SYSTEM PORT, IEC 61850,100 MBIT ETHERNET WITH INTEGRATED SWITCH OPTICAL, DOUBLE, LC-CONNECTOR (FROM OCT. 09) NO DIGSI INTERFACE ON REAR OF DEVICE, PROTECTION DATA INTERFACE 1: OPTICAL 1300NM,LC-DUPLEX CONNE. FIBER LENGTH UP TO 24 KM FOR DIRECT CONNECTION VIA MONO-MODE FIBER FUNCTION 1: TRIP MODE 3-POLE ONLY, WITHOUT AUTO RECLOSURE FUNCTION WITHOUT SYNCHRONISM CHECK PROTECTION INTERFACE 2: OPTICAL 1300NM, 2 LC-DUPLEX CONNECTOR FIBER LENGTH UP TO 24 KM FOR DIRECT CONNECTION WITH MONO-MODE FIBER WITH OVERCURRENT PROTECTION/ BREAKER FAILURE PROTECTION WITH 4 REMOTE COMMANDS, WITH 24 REMOTE MESSAGES, WITHOUT TRANSFORMER EXTENSIONS FAULT LOCATOR 1-SIDE MAESURING W/O MEASURED VALUES EXTENDED, W/O EXTERNAL GPS-SYNCHRONIZAT. WITHOUT CAPACITIVE CURRENT LOAD COMPENSATION In stock
7SD5225-5CB99-2FK0 L0R+M0A 7SD TWO TERMINAL DIFFERENT. RELAY WITH 4-LINE DISPLAY MEASUREMENT INPUT: IPH = 5A; IE = 5A AUXIL. VOLTAGE: 110V TO 250V DC 115V AC, BINARY INPUT THRESHOLD 88V FLUSH-MOUNTING HOUSING WITH SCREW TERMINALS 1/1 X 19", 16 BI, 23 BO, 1 LIVE-STATUS CONTACT REGION WORLD,LANGUAGE UK-ENGL. (LANGUAGE CHANGEABLE) PORT B: SYSTEM PORT, IEC 61850,100 MBIT ETHERNET ELECTRICAL,DOUBLE, RJ45-PLUG NO DIGSI INTERFACE ON REAR OF DEVICE, PROTECTION INTERFACE 1: OPTICAL 820NM,TWO ST-CONNECTORS FO LENGTH UP TO 1,5KM, FOR MULTIMODE FIBER FOR DIRECT CONNECTION OR COMMUNICATION NETWORKS FUNCTION 1: TRIP MODE 1- AND 3-POLE, WITHOUT AUTO RECLOSURE FUNCTION WITHOUT SYNCHRONISM CHECK WITH TIME OVERCURRENT PROTECT./ BREAKER FAILURE PROTECTION/ EARTH FAULT PROTECTION, DIRECTIONAL GROUND (EARTH)- FAULT PROTECTION WITH 4 REMOTE COMMANDS, WITH 24 REMOTE MESSAGES, WITHOUT TRANSFORMER EXTENSIONS FAULT LOCATOR 1-SIDE MEASURING WITH VOLTAGE-/FREQUENCY PROTEC. W/O MEASURED VALUES EXTENDED, W/O EXTERNAL GPS-SYNCHRONIZAT. WITHOUT CAPACITIVE CURRENT LOAD COMPENSATION In stock
7SD5225-6AB09-9CJ0+M2B+N0B 7SD TWO TERMINAL DIFFERENT. RELAY WITH 4-LINE DISPLAY MEASUREMENT INPUT: IPH = 5A; IE = 5A AUXIL. VOLTAGE: 220V TO 250V DC 115V AC, BINARY INPUT THRESHOLD 176V FLUSH-MOUNTING HOUSING WITH SCREW TERMINALS 1/2 X 19", 8 BI, 15 BO, 1 LIVE-STATUS CONTACT REGION WORLD,LANGUAGE UK-ENGL. (LANGUAGE CHANGEABLE) NO SYSTEM INTERFACE INTERFACE ON REAR OF DEVICE DIGSI 4, ELECTRICAL RS485 PROTECTION INTERFACE 1: OPTICAL 820NM,TWO ST-CONNECTORS FO LENGTH UP TO 3,5KM FOR DIRECT CONNECTION VIA MULTIMODE FIBER FUNCTION 1: TRIP MODE 3-POLE ONLY, WITHOUT AUTO RECLOSURE FUNCTION WITHOUT SYNCHRONISM CHECK PROTECTION INTERFACE 2: OPTICAL 820NM,TWO ST-CONNECTORS FO LENGTH UP TO 3,5KM FOR DIRECT CONNECTION VIA MULTIMODE FIBER WITH OVERCURRENT PROTECTION/ BREAKER FAILURE PROTECTION WITH 4 REMOTE COMMANDS, WITH 24 REMOTE MESSAGES, WITHOUT TRANSFORMER EXTENSIONS FAULT LOCATOR 1-SIDE MAESURING W/O MEASURED VALUES EXTENDED, W/O EXTERNAL GPS-SYNCHRONIZAT. WITHOUT CAPACITIVE CURRENT LOAD COMPENSATION; ; In stock
7SD5321-4AB99-0FV7 L0S+M2G 7SD TWO TERMINAL DIFFERENT. RELAY WITH GRAPHICAL DISPLAY MEASUREMENT INPUT: IPH = 1A; IE = 1A AUXIL. VOLTAGE: 60V TO 125V DC BINARY INPUT THRESHOLD 19V FLUSH-MOUNTING HOUSING WITH SCREW TERMINALS 1/2 X 19", 8 BI, 15 BO, 1 LIVE-STATUS CONTACT REGION WORLD,LANGUAGE UK-ENGL. (LANGUAGE CHANGEABLE) PORT B: SYSTEM PORT, IEC 61850,100 MBIT ETHERNET WITH INTEGRATED SWITCH OPTICAL, DOUBLE, LC-CONNECTOR (FROM OCT. 09) INTERFACE ON REAR OF DEVICE DIGSI 4, ELECTRICAL RS485 PROTECTION DATA INTERFACE 1: OPTICAL 1300NM,LC-DUPLEX CONNE. FIBER LENGTH UP TO 24 KM FOR DIRECT CONNECTION VIA MONO-MODE FIBER FUNCTION 1: TRIP MODE 3-POLE ONLY, WITHOUT AUTO RECLOSURE FUNCTION WITHOUT SYNCHRONISM CHECK WITH TIME OVERCURRENT PROTECT./ BREAKER FAILURE PROTECTION/ EARTH FAULT PROTECTION, DIRECTIONAL GROUND (EARTH)- FAULT PROTECTION WITH 4 REMOTE COMMANDS, WITH 24 REMOTE MESSAGES, WITH TRANSFORMER EXPANSIONS FAULT LOCATOR 2-SIDE MEASURING WITH VOLTAGE-/FREQUENCY PROTEC. WITH RESTRICTED EARTH FAULT WITH MEASURED VALUES EXTENDED (MIN/MAX VALUES) WITH EXTERNAL GPS SYNCHRONIZAT. WITH CPACITIVE CURRENT LOAD COMPENSATION In stock
7SJ8011-5EB06-1FA0 7SJ OVERCURRENT PROTECTION RELAY HOUSING 1/6 19", 4 X I, 3 BI, 5 BO, (2 CHANGEOVER) 1 LIVE STATUS CONTACT measuring inputs: Iph = 1 A / 5 A, Ie = 1 A / 5 A rated auxiliary voltage: 60 V/ 110 V / 125 V/ 220 V DC, 115 V / 230 V AC flush-mounting housing, screw terminals region world, IEC/ANSI language English (language can be changed) front membrane standard no system interface interface, Port A (device bottom side, front) with Ethernet interface (DIGSI interface, not IEC61850) RJ45 plug measurement: fault recording functionality: overcurrent protection+ overcurrent protection PH(50/51) I>,I>>,I>>>,IP ground-fault protection overcurrent protection ground (50N/51N: IE>, IE>>,IE>>>, IEP ground fault/ground short circuit prot. IEE>.IEE>>,IEEP overload protection (49) trip-circuit supervision (74TC) circuit breaker failure protection (50BF), unbalanced-load protection (46) undercurrent supervision (37) lock out (86) parameter set switchover supervision functions circuit-breaker control flexible protection functions (characteristic key values f(*) without automatic reclosing without fault locator In stock
7SJ8011-5EB10-1FA0 7SJ OVERCURRENT PROTECTION RELAY HOUSING 1/6 19", 4 X I, 3 BI, 5 BO, (2 CHANGEOVER) 1 LIVE STATUS CONTACT measuring inputs: Iph = 1 A / 5 A, Ie = 1 A / 5 A rated auxiliary voltage: 60 V/ 110 V / 125 V/ 220 V DC, 115 V / 230 V AC flush-mounting housing, screw terminals region world, IEC/ANSI language English (language can be changed) front membrane standard system interface port B (device bottom side, rear) IEC60870-5-103 or DIGSI4/modem, electrical RS232 without system interf., Port A measurement: fault recording functionality: overcurrent protection+ overcurrent protection PH(50/51) I>,I>>,I>>>,IP ground-fault protection overcurrent protection ground (50N/51N: IE>, IE>>,IE>>>, IEP ground fault/ground short circuit prot. IEE>.IEE>>,IEEP overload protection (49) trip-circuit supervision (74TC) circuit breaker failure protection (50BF), unbalanced-load protection (46) undercurrent supervision (37) lock out (86) parameter set switchover supervision functions circuit-breaker control flexible protection functions (characteristic key values f(*) without automatic reclosing without fault locator In stock
7SJ8011-5EB90-3FA0 L0R 7SJ OVERCURRENT PROTECTION RELAY HOUSING 1/6 19", 4 X I, 3 BI, 5 BO, (2 CHANGEOVER) 1 LIVE STATUS CONTACT MEASURING INPUTS: IPH = 1A / 5A, IE = 1A / 5A RATED AUXILIARY VOLTAGE DC 60V/ 110V / 125V/ 220V, AC 115V/ 230V FLUSH-MOUNTING CASE, SCREW-TYPE TERMINAL REGION WORLD, IEC/ANSI, LANGUAGE ENGLISH (LANGUAGE CHANGEABLE) STANDARD FRONT SYSTEM PORT, PORT B (ON BOTTOM OF DEVICE, REAR) IEC 61850, 100MBIT ETHERNET, ELECTR., DOUBLE, RJ45 CONNECTOR NO SYSTEM PORT A METERING: FAULT RECORDING, AVERAGE VALUES, MIN/MAX VALUES FUNCTIONALITY: TOC+ PHASE OVERCURRENT (50/51) I>,I>>,I>>>,IP, TIME OVERCURR.PROTECTION GROUND 50N/51N, IE>, IE>>,IE>>>, IEP GROUND FAULT PROTECTION IEE>.IEE>>,IEEP OVERLOAD PROTECTION (49) TRIP CIRCUIT SUPERVISION (74TC) CIRCUIT BREAKER FAILURE PROTECT NEGATIVE SEQUENCE PROTECTION UNDERCURRENT MONITORING (37) LOCK OUT (86) PARAMETER CHANGEOVER MONITORING FUNCTIONS CONTROL OF CIRCUIT BREAKER FLEXIBLE PROTECTION FUNCTIONS (CURRENT PARAMETERS) INRUSH RESTRAINT WITHOUT AUTO-RECLOSURE WITHOUT FAULT LOCATOR In stock
7SJ8022-5EB96-1FA1 L0A 7SJ OVERCURRENT PROTECTION RELAY HOUSING 1/6 19", 4 X I, 7 BI, 8 BO, (2 CHANGEOVER) 1 LIVE STATUS CONTACT MEASURING INPUTS: IPH = 1A / 5A, IEE (SENSITIVE) = 0,001 TO 1,6 A/ 0,005 TO 8A RATED AUXILIARY VOLTAGE DC 60V/ 110V / 125V/ 220V, AC 115V/ 230V FLUSH-MOUNTING CASE, SCREW-TYPE TERMINAL REGION WORLD, IEC/ANSI, LANGUAGE ENGLISH (LANGUAGE CHANGEABLE) STANDARD FRONT SYSTEM PORT, PORT B (ON BOTTOM OF DEVICE, REAR) PROFIBUS DP SLAVE, ELECTR.RS485 INTERFACE, PORT A (ON BOTTOM OF DEVICE) WITH ETHERNET INTERFACE (DIGSI, NOT IEC61850) RJ45 CONNECTOR METERING: FAULT RECORDING FUNCTIONALITY: TOC+ PHASE OVERCURRENT (50/51) I>,I>>,I>>>,IP, TIME OVERCURR.PROTECTION GROUND 50N/51N, IE>, IE>>,IE>>>, IEP GROUND FAULT PROTECTION IEE>.IEE>>,IEEP OVERLOAD PROTECTION (49) TRIP CIRCUIT SUPERVISION (74TC) CIRCUIT BREAKER FAILURE PROTECT NEGATIVE SEQUENCE PROTECTION UNDERCURRENT MONITORING (37) LOCK OUT (86) PARAMETER CHANGEOVER MONITORING FUNCTIONS CONTROL OF CIRCUIT BREAKER FLEXIBLE PROTECTION FUNCTIONS (CURRENT PARAMETERS) INRUSH RESTRAINT WITH AUTOMATIC RECLOSING In stock
7SJ8031-5BB00-1FB0 7SJ OVERCURRENT PROTECTION RELAY HOUSING 1/6 19", 4 X I, 3 X U, 3 BI, 5 BO, (2 CHANGEOVER) 1 LIVE STATUS CONTACT MEASURING INPUTS: IPH = 1A / 5A, IE = 1A / 5A RATED AUXILIARY VOLTAGE DC 60V/ 110V / 125V/ 220V, AC 115V/ 230V SURFACE-MOUNTING CASE SCREW-TYPE TERMINAL REGION WORLD, IEC/ANSI, LANGUAGE ENGLISH (LANGUAGE CHANGEABLE) STANDARD FRONT NO SYSTEM PORT NO SYSTEM PORT A METERING: FAULT RECORDING FUNKTIONALITY: TOC PHASE OVERCURRENT (50/51) I>, I>>,I>>>,IP TIME OVERCURR.PROTECTION GROUND 50N/51N, IE>,IE>>,IE>>>,IEP GROUND FAULT PROTECTION IEE>, IEE>>, IEEP, OVERLOAD PROTECTION (49) TRIP CIRCUIT SUPERVISION (74TC) CIRCUIT BREAKER FAILURE PROTECT NEGATIVE SEQUENCE PROTECTION UNDERCURRENT MONITORING (37) LOCK OUT (86) ADDITONAL FUNCTIONS: DIRECTIONAL GROUND FAULT VOLTAGE A. FREQUENCY PROTECTION FLEXIBLE PROTECTION FUNCTIONS (CURRENT AND VOLTAGE PARAMET.) WITHOUT AUTO-RECLOSURE WITHOUT FAULT LOCATOR In stock
7SJ8041-1EC96-3FC2 L0G 7SJ OVERCURRENT PROTECTION RELAY HOUSING 1/6 19", 4 X I, 3 X U, 7 BI, 8 BO, (2 CHANGEOVER) 1 LIVE STATUS CONTACT measuring inputs: Iph = 1 A / 5 A, Ie = 1 A / 5 A rated auxiliary voltage: DC 24, 48 V flush-mounting housing, screw terminals region US,ANSI,language US Engl. (language can be changed) front membrane US system interface port B (device bottom side, rear) DNP 3.0, electrical RS485 interface, Port A (device bottom side, front) with Ethernet interface (DIGSI interface, not IEC61850) RJ45 plug measurement: fault recording, mean-value generation, min./max. values functionality: overcurrent protection overcurrent protection PH(50/51 I>, I>>,I>>>,IP sensitive ground-fault protection overcurrent protection ground (50N/51N): IE>, IE>>, IEP ground fault/ground fault protection IEE>, IEE>>, IEEP overload protection (49) trip-circuit supervision (74TC) circuit breaker failure protection (50BF) unbalanced-load protection (46) undercurrent supervision (37) lock out (86) supplementary functions: determination of earth-fault direction directional element phase voltage protection, frequenc(*) with fault locator In stock

Product Information

Product Details

7UT Relay 7UT6131-6EB92-1AC2 L0D
7UT6131-6EB92-1AC2 L0D

7UT Relay 7UT6131-6EB92-1AC2 L0D

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7SJ Relay 7SJ6402-4EB92-3FF0+L0D
7SJ6402-4EB92-3FF0+L0D

7SJ Relay 7SJ6402-4EB92-3FF0+L0D

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Differential Protection Relay 7SR1813-1NC87-0CA0
7SR1813-1NC87-0CA0

Differential Protection Relay 7SR1813-1NC87-0CA0

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7SJ Relay 7SJ6211-5BB90-1FE0 L0D
7SJ6211-5BB90-1FE0 L0D

7SJ Relay 7SJ6211-5BB90-1FE0 L0D

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7PA Relay 7PA3032-1AA00-0
7PA3032-1AA00-0

7PA Relay 7PA3032-1AA00-0

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7SD Relay 7SD5221-4CB99-4CJ0 L0A+M1A
7SD5221-4CB99-4CJ0 L0A+M1A

7SD Relay 7SD5221-4CB99-4CJ0 L0A+M1A

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7SR Relay 7SR2303-1NA22-0CA0
7SR2303-1NA22-0CA0

7SR Relay 7SR2303-1NA22-0CA0

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Distance Protection Relay 7SD5321-5PB99-9HV7 L0S+M3G+N7G
7SD5321-5PB99-9HV7 L0S+M3G+N7G

Distance Protection Relay 7SD5321-5PB99-9HV7 L0S+M3G+N7G

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7SR Transformer 7SR5420-2AA12-0AA0
7SR5420-2AA12-0AA0

7SR Transformer 7SR5420-2AA12-0AA0

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