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Feeders are the backbone of the grid and directly power our daily lives and critical infrastructure. But the grid is becoming increasingly complex. Distributed energy resources are creating two-way power flow, electrification is causing loads to grow and shift, and extreme weather is driving undergrounding for greater resilience. Today’s feeder devices must address more dynamic situations.

S&C’s IntelliRupter® PulseCloser® Fault Interrupter is an all-in-one device that can navigate the rapidly changing grid. Whether you want to increase segmentation, loop your circuits, or protect underground lines, the IntelliRupter® fault interrupter can do it all. You can tackle multiple grid-modernization goals at once or start with one application and unlock more as you go—all with one device. No matter where you are in your journey to advance the grid, the IntelliRupter fault interrupter evolves with you.

The Difference: PulseClosing® Technology

Using PulseClosing Technology, the IntelliRupter fault interrupter uses 95% less energy to test for faults. This technology creates less stress on the aging grid and enables the many applications the IntelliRupter fault interrupter supports.

What Are Your Goals?

Grid-modernization plans can take various shapes and sizes. Whether you have one goal or a multi-year strategy, you can make progress at your own pace with the IntelliRupter fault interrupter. Check out these common goals to see the stacked benefits one device can bring.

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Improve Segmentation

Drastically reduce the number of customers per segment by adding more devices, even a virtually unlimited amount.

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Reroute Power Automatically

Automatically locate and isolate faults and reroute power from an alternate source, with or without communications.

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Protect Underground Circuits

Test for faults on underground lines and avoid cable damage.

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Advance Your System Holistically

Enhance your system with a holistic approach, fiber-ready devices, and distributed intelligence.

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Case Studies

Dalton, Georgia

Utility Enhances Reliability for 'Carpet Capital of the World'

Read Full Case Study

Bandera, Texas

Texas Co-op Leverages Fiber Network for Grid Modernization

Read Full Case Study

Wisconsin and Iowa

Automation Without Communications Improves Utility’s Reliability

Read Full Case Study

Florida

Eliminating Momentary Outages and Isolating Faulted Line Segments

Read Full Case Study

Alberta, Canada

Self-Healing Technology Saves More than 30 Million Customer Minutes

Read Full Case Study

Chattanooga, Tennessee

Municipal Utility’s Grid Improves by 50% with Self-Healing Technology

Read Full Case Study

Construction & Design

Explore the IntelliRupter fault interrupter’s key features using this 3D product viewer. For instructions, click the Help button.

Need Support?

S&C is here to help you through any stage in your grid-modernization journey, from system studies to installation videos. Explore more below.

Product Details

Fault interruption, fault isolation, and circuit restoration in a single, easy-to-install package.

  • Unique PulseClosing® Technology confirms there’s no fault on the line before initiating point-on-wave closing
  • Vacuum interrupters with a unique actuating system that enables PulseClosing® Technology
  • Integrated three-phase voltage sensing on both sides of the interrupters
  • Integrated three-phase current sensing that provides linear output over the range from load to fault current
  • An integrated power module on one or both sides of the interrupters, eliminating the need to install separate power transformers
  • Solid dielectric insulation featuring S&C’s Cypoxy™ Insulator, a cycloaliphatic epoxy resin system
  • Models with or without integrated visible disconnect
  • A choice of integrated controls, all configurable from the safety of your vehicle using a Wi-Fi link to your PC:
    • A standard Control Group provides basic protective functionality in standalone applications
    • S&C’s IntelliTeam SG Automatic Restoration System support from an IntelliTeam SG Control Group
    • Automatic selection of pre-configured protection provides appropriate settings for the source serving the team
    • All controls are line-powered, so no voltage transmitter (VT) needed
    • All controls are hookstick-replaceable
  • Internal circuit-making and circuit-breaking for all-weather reliability (hookstick-operated disconnect with air gap)
  • Integrated three-phase voltage and current sensors that eliminate cost, clutter, and complexity of separately mounted sensors

The SDA-4540R3 Control Module now supports:

  • IEC 61850 GOOSE Protocol.
  • Phasor Measurement Unit. Both P-Class and M-Class supported.

    Rate of Change of Frequency (ROCOF) protection element
  • Directional Transient Active Power (DTAP) and Wattmetric protection elements. For Three-Phase Three-Wire resonantly grounded systems with Rapid Earth Fault Current Limiter (REFCL) compensator systems.

Disconnect Styles♣

kV 

Amperes RMS♣

Max

BIL

Continuous

Interrupting Symmetrical

15.5

110

800/900

16 000

27

125

800/900

12 500

38

170

630/800♥

12 500

♣ Each IntelliRupter includes as standard an Integrated Power Module fed from one phase on one side of the switch. An Integrated Power Module fed from one phase on each side of the switch is optionally available.
♥ 800 amperes per IEC; 800 amperes with a minimum wind velocity of 2 ft./sec.
 900 amperes per IEC; 800 amperes with a minimum wind velocity of 2 ft./sec.
See S&C Instruction 766-510 for available input ranges. An Integrated Power Module fed from one phase on each side of the switch is optionally available.

Compact Styles

kV 

Amperes RMS

Max

BIL

Continuous

Interrupting Symmetrical

15.5

95

800/900♣

16 000

27

125

800/900♣

12 500

♣ 900 amperes per IEC; 800 amperes with a minimum wind velocity of 2 ft./sec.

Non-Disconnect Styles♣

kV 

Amperes RMS♣

Max

BIL

Continuous

Interrupting Symmetrical

15.5

110

800/900

16 000

27

125

800/900

12 500

38

170

630/800♥

12 500

♣ Each IntelliRupter includes as standard an Integrated Power Module fed from one phase on one side of the switch. An Integrated Power Module fed from one phase on each side of the switch is optionally available.
♥ 630 amperes per IEC; 800 amperes with a minimum wind velocity of 2 ft./sec.

 900 amperes per IEC; 800 amperes with a minimum wind velocity of 2 ft./sec.

For Overhead Systems

For Overhead Systems

  • Non-Disconnect Style IntelliRupter® PulseCloser® Fault Interrupter
  • Non-Disconnect Compact-Crossarm Style IntelliRupter® PulseCloser® Fault Interrupter
  • Disconnect Style IntelliRupter® PulseCloser® Fault Interrupter

For Underground Systems

For Underground Systems

  • Pad-Mounted Style IntelliRupter® PulseCloser® Fault Interrupter

IntelliRupter® fault interrupters include a base-integrated control that’s accessed for configuration and operation via a secure Wi-Fi link. This innovative approach improves reliability, operator safety, and convenience. It also significantly enhances security compared with the “lock-and-key” approach of most conventional reclosers.

S&C can furnish the control with a wide range of radios that support applications such as SCADA and IntelliTeam® SG Automatic Restoration System. Please see S&C Specification Bulletin 766-31 for more information on the radio options that are supported.

Other options and accessories include:

  • Wildlife protection. Reduces wildlife-related nuisance outages
  • Bracket-mounted antenna. Extends 4 feet from the base and attaches at either end; includes a 900-MHz, 3-dBd-gain, omni-directional antenna or a 900-MHz, 9-dBd gain directional Yagi antenna, plus cable and hardware (also available: bracket only)
  • Joslyn Zforce Type ZHP (Heavy Duty) polymer-housed metal-oxide surge arresters. Factory-installed and wired.
  • International Crating. Features hardwood or certified heat-treated wood products.
  • A 10-year IntelliRupter warranty. Comes in lieu of standard 2-year warranty
  • Module handle fitting. Attaches to a hookstick with a universal fitting and permits field installation and removal of the protection and control module and the communication module; includes a prong for operating IntelliRupter fault interrupter levers
  • Module stub handle. Permits the installation and removal of the protection and control module and the communication module in your service center or lab (When permitted by utility operating practice, a gloved individual can used the handle to install and remove the modules in the field.)
  • Power supply. Powers the protection and control module and the communication module installed in the base in your service center or lab and permits open, close, and test operations using a pulse, pre-installation uploading and downloading of configuration settings, radio programming, and radio-battery charging, as applicable (for indoor use only)
  • Docking station. Powers the protection and control module and the communication module removed from the base in your service center or lab and permits pre-installation uploading and downloading of configuration settings, radio programming, and radio-battery charging, as applicable (for indoor use only)
  • Spare 12-Vdc, 8-Ampere-Hour Battery Pack. For the communication module
  • Battery Charger Output Harness. For connecting the battery pack to an 800-ma, current-limited 12-Vdc lead-acid battery charger
  • Detailed Instruction Manual. A binder containing printed copies of all IntelliRupter fault interrupter instruction sheets, erection drawings, and reference drawings

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