7SJ6321-5EB90-3FE0+L0S

Product Description

['Home', 'Protection Relays', 'SIPROTEC 4', '7SJ63', '7SJ6321-5EB90-3FE0+L0S'] Need Siemens 7SJ6321-5EB90-3FE0+L0S? Multifunction protective relay for SIPROTEC 4 protection and control systems. Supplied with full traceability and... Price & Availability Classified as a multifunction protective relay, it is positioned as a direct replacement and service part for existing installations. It is intended for use within SIPROTEC 4 protection and control systems, where dependable operation and a precise fit are essential to keeping the plant running. Listed as Active, it is offered as a maintained and verified spare that supports the continued operation of the installed base. Key technical specifications include: The Enclosure is 1/2 19-inch, panel flush mounting. Its Communication is rated at IEC 60870-5-103, PROFIBUS, DNP3, MODBUS (variant-dependent). For reference, the Display is Backlit graphic display, programmable LEDs. The Supply voltage is Contact supplier for exact specifications (variant-dependent). Its Degree of protection is rated at IP51/IP52 (front) typical for 7SJ63. For reference, the Weight is Contact supplier for exact specifications (7SJ63 typical approx. 5.5 kg). Notable features of this unit: Overcurrent protection (50/51) definite-time and inverse-time. Under/over voltage (27/59) and under/over frequency (81). Negative-sequence, motor, breaker-failure and auto-reclosing functions. Local control with graphic display and programmable logic (CFC). Typical applications include Distribution feeder and line protection, Industrial plant and municipal power distribution, Rail and infrastructure substations. It is compatible with or cross-references Siemens SIPROTEC 4 system / DIGSI 4 engineering software, Current and voltage transformers, SCADA and substation communication networks. Within industrial automation and process-control environments, components of this type are relied upon to keep critical equipment operating safely and efficiently. They are typically specified where uptime, repeatability and a predictable maintenance cycle matter more than upfront cost. A multifunction protective relay such as this one forms part of a larger machine or system, so correct identification and fitment directly affect the performance and safety of the whole installation. Siemens parts are widely used across power generation, manufacturing, oil and gas, water and process industries, where engineering teams standardise on proven series to simplify spares planning. When selecting a replacement, confirm the exact model designation and verify that the mechanical and electrical interface matches the unit currently installed. Cross-checking the order code, mounting style and connection type against the existing device helps avoid compatibility issues and unplanned downtime during a maintenance window. Where several variants exist, the suffix often defines voltage, range or firmware, so it should be matched precisely rather than approximated. This item is offered from our active stock of current and discontinued industrial parts. Each listing is verified against the manufacturer designation before shipment so you receive the correct part for your application. Availability and lead time vary by item; our team can confirm the fastest option for your required quantity and provide a formal quotation on request. Common questions: Regarding "How does 7SJ6321 differ from 7SJ6322": They differ in I/O count and feature configuration per suffix; the exact difference is defined by the MLFB and should be confirmed with Siemens. Regarding "Is this SIPROTEC 4 or 5": It is SIPROTEC 4 7SJ63. SIPROTEC 5 successors exist; check spares/migration with Siemens. Please contact us to confirm current pricing, availability and delivery for your required quantity; volume and project pricing are available on request. The Siemens 7SJ6321-5EB90-3FE0+L0S is a multifunction protective relay. Basic Product Information Earth-fault protection (50N/51N) and directional overcurrent (67/67N) Under/over voltage (27/59) and under/over frequency (81) Negative-sequence, motor, breaker-failure and auto-reclosing functions Local control with graphic display and programmable logic (CFC) Overcurrent protection (50/51) definite-time and inverse-time Technical Specifications Version & Model Difference ['7SJ6321 differs from 7SJ6322 in I/O count and feature configuration per suffix; confirm exact differentiation via MLFB.', 'SIPROTEC 4 7SJ63 is the predecessor to SIPROTEC 5; verify spares and migration with Siemens.'] Application Scenarios Distribution feeder and line protection Industrial plant and municipal power distribution Rail and infrastructure substations How does 7SJ6321 differ from 7SJ6322? They differ in I/O count and feature configuration per suffix; the exact difference is defined by the MLFB and should be confirmed with Siemens. Is this SIPROTEC 4 or 5? It is SIPROTEC 4 7SJ63. SIPROTEC 5 successors exist; check spares/migration with Siemens. What enclosure is used? A 1/2 19-inch flush-mounting enclosure with backlit graphic display. What protection functions are included? Overcurrent (50/51), earth-fault (50N/51N), directional overcurrent, under/over voltage and frequency, negative-sequence, motor and breaker-failure protection. Siemens 6ES7214-1BH50-0XB0 PLC CPU (Type-1) Siemens 6ES7231-4HF50-0XB0 Analog Input Module Siemens 6ES7231-5PD50-0XB0 Analog RTD Module Siemens 6ES7231-5QF50-0XB0 Analog TC Module (S7-1200) Siemens 6ES7233-4HF50-0XB0 Analog IO Module (SM 1234) Siemens 6ES7216-2BD23-0XB0 PLC CPU (Type-2) Siemens 6ES7223-1BH22-0XA0 PLC IO Module (Type-1) Siemens 6ES7223-5PH50-0XB0 PLC IO Module (Type-2)