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GE Multilin

GE Multilin Protection Relays and UR Modules

GE Multilin protection relays protect and monitor feeders, transformers, motors, generators, busbars and transmission lines. The product range includes modular UR protection relays and earlier Multilin relay families.

UR replacement hardware includes CPU, power supply, CT/VT input, digital I/O, transducer I/O and communication modules. Available options depend on the relay model, hardware generation and installed configuration.

For replacement purchasing, match the complete relay order code, module reference, hardware revision and firmware version. Legacy models such as 269, 369 and 745 use different product architectures and replacement requirements.

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Select a Multilin Relay by Protection Application

The protected electrical asset determines the relay application. Feeder, transformer, motor, generator, busbar and line protection require different measurement inputs, protection functions and control arrangements.

Protected Asset Representative UR Models Main Selection Factors
Feeder F35 / F60 Overcurrent and ground-fault protection, feeder arrangement, breaker control and measurement requirements.
Transformer T35 / T60 Differential protection, winding arrangement, CT ratios and transformer protection functions.
Motor M60 Motor protection, thermal characteristics, starting conditions and associated measurement inputs.
Generator G30 / G60 Generator protection, grounding, current and voltage inputs and protection coordination.
Busbar B30 / B90 Bus differential protection, bus zones, CT configuration and station arrangement.
Transmission Line D60 / L90 Distance or line differential protection, communications, CT/VT inputs and tripping scheme.

Application matching: A relay model identifies a protection family. The complete order code determines the installed hardware and optional functions. Verify the actual relay configuration before selecting replacement parts.

UR Family vs Legacy Multilin Relays

GE Multilin includes modular UR protection relays and earlier relay families. Their hardware construction, ordering codes and software requirements are different.

Modular Protection Relays

Multilin UR Family

UR relays use a modular platform with configurable processor, power, measurement, digital I/O and communication hardware.

The applicable options depend on the relay model, chassis configuration, hardware generation and firmware.

View a UR CPU Module
Earlier Protection Relay Families

269, 369 and 745 Series

These earlier motor and transformer protection relays use their own complete ordering structures. They are not UR modular relay chassis.

GE Vernova identifies these families as legacy products with discontinued manufacturing. Replacement or migration must follow the applicable product guidance.

Multilin 369 Relay Multilin 745 Relay
Multilin 745 Transformer Protection Relay View a complete legacy protection relay with its front-panel display and hardware enclosure. The 745 is a separate relay family rather than a UR plug-in module.

Legacy replacement: GE Vernova identifies the 859 as a migration direction for certain earlier motor protection relays and the 845 for the 745 transformer series. Final replacement suitability depends on wiring, settings, application and the OEM migration requirements.

Types of Multilin UR Hardware Modules

UR replacement modules must match the target relay configuration. Hardware options vary by relay model and generation.

Module Type Hardware Function Replacement Check
Power Supply Provides control power to the relay and associated internal circuitry. Confirm the specified control-power input option and relay hardware generation.
CPU / Processor Executes protection and control logic and supports model-dependent communication functions. Match CPU type, hardware generation, communication configuration and firmware compatibility.
CT / VT Inputs Provides current and voltage measurement inputs for protection and metering. Confirm the input option, installed CPU generation and supported relay configuration.
Digital I/O Provides contact inputs and relay outputs for protection, control and auxiliary signals. Match input type, output contact arrangement, terminal assignment and module code.
Transducer I/O Supports selected analog measurement and transducer input/output functions. Confirm the exact analog I/O option and associated settings.
Communications Supports selected networking, inter-relay communications and process-bus interfaces. Verify interface type, physical port configuration and supported firmware.

Hardware options: Communication protocols, control-power voltage and I/O capabilities are model-dependent. A common GE Multilin family name does not establish identical specifications across the product range.

UR Hardware Replacement Matching

Before replacing a UR module, record the complete relay order code and the installed module identification. Check hardware compatibility and firmware before changing the relay configuration.

  • Relay model: Identify the complete F60, T60, M60, G60 or other UR model reference.
  • Order code: Record the full relay catalog and installed hardware options.
  • Module identification: Match the exact UR module code, visible revision and installed slot.
  • CPU generation: Confirm the existing processor hardware type and supported firmware.
  • CT/VT compatibility: Check the measurement module against the target CPU and relay hardware.
  • Settings: Preserve approved relay settings and project configuration files.
  • Commissioning: Follow the applicable OEM replacement and functional-test procedures.
GE Multilin UR9HH CPU module product view

GE Multilin UR9HH CPU module. Verify the complete hardware identification before replacement.

Firmware compatibility: Newer UR firmware releases do not necessarily support older CPU hardware. For example, GE Vernova UR 8.2x release notes identify support for T, U, V and W CPU types and exclude several earlier processor generations.

EnerVista UR Setup: The configuration software version must match the intended firmware. Settings conversion and hardware changes should follow the applicable release notes and approved relay-maintenance procedure.

Firmware, Lifecycle and Parts Availability

GE Multilin hardware options and firmware platforms have different lifecycle statuses. A supported UR relay model may contain an older module option that is no longer manufactured.

Hardware and Firmware Lifecycle

Check the exact module and firmware release against GE Vernova support information. Discontinued hardware may require an approved replacement or migration configuration.

Condition and Supply

We confirm the offered unit's condition, availability, lead time, country of origin and applicable warranty terms with the quotation.

Technical Resources and Related Multilin Parts

GE Vernova Multilin UR Family UR platform, protection applications, modular hardware and communications. UR Firmware and EnerVista Resources Product-specific software, firmware and technical support information. UR9HH CPU Module Review a specific processor module reference. UR6FH Digital I/O Module Review digital output contact configuration. UR7HH Communication Module Review a specific inter-relay communications option. URSHA Power Supply Module Identify the installed power-supply option. GE Automation Parts Browse other GE control and automation product families. Contact PLC Leader Send your full relay order code and module reference.

Frequently Asked Questions

Can UR plug-in modules be used in legacy 369 or 745 relays? +

No. The UR family uses a different hardware architecture from earlier 369 and 745 protection relays. Match replacement hardware to the specific relay family or follow an approved migration path.

Can an older UR CPU run newer firmware? +

Not every CPU generation supports newer firmware. GE Vernova's UR 8.2x release notes specify T, U, V and W CPU compatibility and exclude earlier CPU types. Check the release notes for the firmware version being installed.

Do UR CPU and CT/VT modules need compatible hardware generations? +

Yes. The processor and CT/VT module configuration must be supported by the target relay hardware and firmware. Check the complete order codes, hardware revision and applicable OEM instructions.

Do all GE Multilin relays use the same power supply and communication interfaces? +

No. Control-power ratings, network ports and supported protocols depend on the relay family and ordered hardware. Verify the exact power-supply and communication options before replacement.

Can a legacy Multilin 369 be replaced with an 859 without further checks? +

GE Vernova identifies the 859 as a replacement direction for legacy motor protection relays including the 369. Confirm the installed order code, wiring, functions, settings conversion and commissioning requirements before migration.

Match Your GE Multilin Relay Parts

Send the complete relay order code, installed module reference, hardware revision, firmware version if known, required quantity and destination country.

Send Your Multilin Order Code

Request GE Multilin Parts

 

As one of the leading ge multilin manufacturers and suppliers, we warmly welcome you to wholesale discount ge multilin from our factory. All our products are with high quality and competitive price.

GE Multilin protection relays, Multilin relay replacement, GE Multilin spare parts

As one of the leading ge multilin manufacturers and suppliers, we warmly welcome you to wholesale discount ge multilin from our factory. All our products are with high quality and competitive price.

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