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Automation & Control
Substation Controllers & Switches

Home > Grid Automation > Automation & Control > Controllers

Multilin C60/C95
C60 Breaker Monitoring and Control / C95 Bay Control Unit for Substation and Industrial Automation

The C60 breaker and C95 bay controllers are a substation-hardened-devices that provide a complete integrated package for the protection, control, and monitoring of circuit breakers or bay. The C60 and C95 support dual-breaker busbar configurations such as breaker-and-a-half or ring bus arrangements. Signals from up to 4 sets of CT’s can be brought into the C60/C95 via conventional wiring or process bus for internal summation, which is advantageous by still having the individual currents available for metering and the additional protection elements that operate on individual currents.

Key Benefits

  • Complete breaker and bay control, monitoring and integration in a single platform
  • Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and flexible process bus support (IEC 61850-9-2LE, IEC 61869 or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
  • Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
  • Advance Cyber security features “CyberSentryTM” that helps meet modern industry requirements
  • Phasor Measurement Unit (synchrophasor) according to IEEE® C37.118 (2014) and IEC® 61850-90-5 support
  • Supports latest edition of waveform capture (COMTRADE 2013) simplifying fault records management
  • Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
  • An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors


  • Stand-alone breaker or bay monitoring and control
  • Multiple breaker configuration control including breaker-and-a-half and ring bus
  • Automatic bus transfer scheme using a single device
  • As part of a distributed bay controller
What's New
Protection & Control
Monitoring & Diagnostics
Software & Security
UR 1 integrated Platform across all 18 applications
Communications icon

New and Enhanced Communication Capabilities

  • New process bus module supports IEC 61869 sample values, PTP master capabilities and SV switching (FW 7.9x)
  • New UR process bus modules supporting IEC61850-9-2LE Merging Units (FW 7.8x)Module Training available here
  • Support switchable IEC 61850 Ed. 1 and Ed. 2 and redundant SNTP (FW 7.7x)
  • New UR front panel with integrated 7” color, graphical display - providing operators with enhanced situational awareness (FW 7.6x)
  • High density I/O module supporting up to 120 inputs or up to 72 contact outputs – eliminating the need for additional discrete devices (FW 7.6x)
Cyber security icon

Cyber Security - CyberSentry UR (FW v7.xx)

CyberSentryTM enables UR devices to deliver full cyber security features that help customers to comply with cyber security requirements (NERC CIP, IEEE 1686, IEC 62443, etc):

  • Secured firmware upgrade: FW file includes hash code that enables authentication prior to being used for upgrading UR Relay (FW 7.9x)
HardFiber icon

Fully Compatible with IEC 61850-9-2LE or IEC61869 process bus schemes:

  • Can connect to up to 8 merging units over -9-2LE or 61869
  • Supports PRP, HSR, dual HSR and point-to-point process bus topology
  • Provides support for GE’s IEC 61850 HardFiber Process Bus Solution
Oscillography icon

Extended Oscillography Records (FW v7.xx)

  • Increased number of digital and analog channels (FW 7.90)
  • Supports IEEE C37.111-1999/2013, IEC 60255-24 Ed 2.0 COMTRADE 2013 standard (FW v7.40)
  • Configurable events allow for records of up to 45s at 64 samples per cycle
Protection & control icon

New and Enhanced Protection and Control Functionality

  • New Inrush detection elements (FW 8.0)
  • Expanded Bay Controller Capabilities – providing a one box solution (FW 7.6x)

Key Benefits

  • Auto-reclose and breaker failure
  • Synchronism check
  • Phase and auxiliary undervoltage
  • Neutral and auxiliary overvoltage
  • Phase, ground and neutral overcurrent
  • Sensitive directional power
  • Dual-breaker control
  • Optional 2 x PMU
  • Dedicated harmonic-inrush detection

Protection & Control

The C60 breaker and C95 bay controllers are a substation-hardened-devices that provides a complete integrated package for the protection, control, and monitoring of circuit breakers or bays. The C60/C95 support dual-breaker busbar configurations such as breaker-and-a-half or ring bus arrangements. Signals from up to 4 sets of CT’s can be brought into the C60/C95 for internal summation which is advantageous by still having the individual currents available for metering and additional protection elements that operate on individual currents.

The C60/C95 provide fast and deterministic execution of programmable logic and extensive I/O options that are necessary for substation automation applications.

All of the necessary control logic functions are available for creating automated breaker control schemes such as the popular main-tie-main scheme using a single C60 / C95 device.

Functional Block Diagram

ANSI Device Numbers & Functions

C60 Block Diagram
Device Number Function
25 Synchrocheck
27P Phase Undervoltage
27X Auxiliary Undervoltage
32 Directional Power
49 Thermal Overload
50BF Breaker Failure
50DD Disturbance Detector
50G Ground Instantaneous Overcurrent
50N Neutral Instantaneous Overcurrent
50N BF Neutral Instantaneous Overcurrent, Breaker Failure
50P Phase Instantaneous Overcurrent
51G Ground Time Overcurrent
51N Neutral Time Overcurrent
51P Phase Time Overcurrent
52 AC Circuit Breaker
59N Neutral Overvoltage
59P Phase Overvoltage
59X Auxiliary Overvoltage
79 Autoreclose
81O Overfrequency
Harmonic/Inrush detection

Key Features

Monitoring & Diagnostic

C60/C95 single line diagram

The C60/C95 are a single point for protection, control, metering, and monitoring in one integrated device that can easily be connected directly into DCS or SCADA monitoring and control systems like Viewpoint Monitoring as shown.

Advanced Automation

The C60/C95 incorporate advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average breaker relay or controller. The C60/C95 integrate seamlessly with other UR relays for complete breaker management including reclosing, load shedding, and synchronism applications.

FlexLogic™ diagram

FlexLogic™ allows for the creation of customized C60 substation control schemes that include receiving trip and close commands from other devices and creating logic to replace the need for external lockout relays.

Key Features

Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs

Advanced Communications

The C60/C95 provide advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner.

The C60/C95 support the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.

Interoperability with Embedded IEC 61850

Use the C60/C95 with integrated IEC 61850 to lower costs associated with breaker or bay protection, control and automation. GE’s leadership in
IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.

HardFiber system

The C60’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications. Learn More

The C60 can also connect to GE MU320 or third-party merging units using standard IEC 61869 or IEC 61850-9-2LE communication protocols.

Cyber Security - CyberSentry™ UR (FW v7.4xx)

CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:

Secure FW upgrade

UR FW files v7.9 and up now include a hash code that allows for authentication prior to being used for upgrading UR devices.

Password Complexity

Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.

AAA Server Support (Radius)

Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.

Role Based Access Control (RBAC)

Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication. 

Event Recorder (Syslog for SEM)

Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.

EnerVista™ Software

The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the C60 / C95 controllers. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the C60/C95 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation. Learn More

EnerVista™ Software