Catalogue Masterpact NT and NW Merlin Gerin

1 We do more with electricityLV power air circuit breakersand switch-disconnectorsCatalogueMasterpact NT and NWMerlin GerinAs standards, specifications and designs change from time to time, please ask for confirmationof the information given iin this publicationce document a t imprim sur du papier document has been printed on ecological paperSchneider electric Industries SA5, rue Nadar92506 Rueil-Malmaison Cedex FranceTel : +33 (0)1 41 29 82 00 Fax : +33 (0)1 47 51 80 20 : schneider electric - AMEGP hotos: schneider ElectricPrinted:000000000 yyyy schneider electric - All right reservedMasterpactSchneider Electric1 The original Masterpact has set a new standard for power circuit breakersaround the world.

2 Over the years, other major manufacturers have tried tokeep up by developing products incorporating Masterpact s mostinnovative features, including the breaking principle, modular design andthe use of composite , schneider electric continues to innovate with the new Merlin GerinMasterpact NT and NW addition to the traditional features of power circuit breakers(withdrawability, discrimination and low maintenance), Masterpact nowoffers built-in communications and metering functions, all in optimisedframe NT and NW incorporate the latest technology to enhance bothperformance and safety. Easy to install, with user-friendly, intuitiveoperation and environment-friendly design, they are, quite simply, circuitbreakers of their samewill never beMasterpactSchneider Electric2 Five performance levelsN1 - for standard applications with low short-circuit - for industrial sites with high short-circuit levels or installations withtwo parallel-connected - high-performance for heavy industry where very high short-circuitscan - for incoming devices supplying critical applications requiring bothhigh performance and a high level - for high current-limiting capability and adiscrimination level (37 kA)

3 As yet unequalled byany other circuit breaker of its type; intended forthe protection of cable-type feeders or to raise theperformance level of a switchboard when thetransformer power rating is in a communications networkMasterpact can be integrated in a general supervision system to optimiseinstallation operation and maintenance. The communication architectureis open, and may be upgraded for interfacing with any versionsThe switch-disconnectors are derived directly from the circuit breakersand offer the same features and performance levels. They are available inHA, NA and HF versions, depending on the models. The HF versionincludes instantaneous protection to prevent closing on a closed, the switch-disconnectors are unprotected and behave likeordinary switches.

4 They are often used for busbar ultimate powerin power distributionNew Masterpact ,new levels of performanceE58873029693E58868E5886502585 51000 V and 400 Hz distribution systemsThe Masterpact range can be used on 1000 Vinstallations (mining industry) and 400 Hz systems(aeronautics, computer centres).MasterpactSchneider Electric3800 to 4000 ADe 4000 6300 AMasterpact NTMasterpact NWThe new range of power circuit breakersincludes two families:c Masterpact NT, the world s smallest truepower circuit breaker, with ratings from 800 to1600 A;c Masterpact NW, in two frame sizes, one from800 to 4000 A and the other from 4000 A to6300 frame sizes, 2 familiesThing will be neverthe same800 to 1600 A056477056472056473E58882E58891E58892E58 893 MasterpactSchneider Electric4 The smallest circuit breakerin the worldMasterpact NT innovates by offering all theperformance of a power circuit breaker in anextremely small volume.

5 The 70 mm pole pitchmeans a three-pole drawout circuit breaker canbe installed in a switchboard section 400 mmwide and 400 mm installation solutionsThe new range improves upon all theinstallation solutions which have already madeMasterpact a success. It has been designed tostandardise switchboards, optimise volumesand simplify installation:c incoming connection to top or bottomterminals;c no safety clearance required;c connection:v horizontal or vertical rear connection;v front connection with minimum extra space;v mixed front and rear connections;c 115 mm pole pitch on all versions;c no derating up to 55 C and volumesUp to 4000 A, Masterpact NW circuit breakersare all the same size, the same as the old M08to 32 4000 A to 6300 A, there is just one size,much smaller than solutionsSpecial connections are available to replace afixed or drawout Masterpact M08 to 32 with aMasterpact NW, without modifying the busbarsor the door other offer canput us in the shadeOptimisedvolumesE58869E58879E58880E 58881 MasterpactSchneider Electric5 With optimised sizes, the Masterpact NT andNW ranges simplify the design of switchboardsand standardise the installation of devices.

6 C a single connection layout for Masterpact NT;c three connection layouts for Masterpact NW:v one from 800 to 3200 A;v one for 4000 A;v one up to 6300 A;c identical connection terminals from 800 to6300 A ( Masterpact NW);c front connection requires little space becausethe connectors to not increase the depth of thedevice;c rear connection to vertical or horizontalbusbars simply by turning the connectors 90 .Vertical front connection of a fixedMasterpact and horizontal rear connectionof a fixed Masterpact ofinstallationConnection to perfect fitE58879E58871E58870E58872E58867 MasterpactSchneider Electric6 Greater breakingThe patented new design of the arc chutes includes stainless-steel chutes absorb the energy released during breaking, thus limiting thestresses exerted on the installation.

7 They filter and cool the gasesproduced, reducing effects perceptible from the unlatchingThe automatic unlatching of the circuit breaker operating mechanism forhigh short-circuits extends performance up to 150kA. It produces ultra-fast tripping for all short-circuits higher than 37 kA (L1) and 65 kA (H3).For lower short-circuits, the system does not react so that the control unitcan provide total discrimination with downstream intelligent trip , with the high speed of calculation, the small size of memories andadvances in miniaturisation, trip units have become circuit breaker controlunits offering increasingly powerful functions.

8 They accurately measuresystem parameters, instantly calculate values, store data, log events,signal alarms, communicate, take action, etc. The new Masterpactranges, equipped with Micrologic control units, constitute both anextremely reliable protective device and an accurate control units are equipped with a digital LCD display used inconjunction with simple navigation buttons. Users can directly accessparameters and settings. Navigation between screens is intuitive and theimmediate display of values greatly simplifies settings. Text is displayed inthe desired backed by incomparable securityProtection functions are separate from the measurement functions andare managed by an ASIC electronic component.

9 This independenceguarantees immunity from conducted or radiated disturbances andensures a high degree of patented double setting system for protection functions establishes:* a maximum threshold set using the control-unit dials;* fine adjustments via the keypad or remotely. The fine adjustments forthresholds (to within one ampere) and tripping delays (to within a fractionof a second) are displayed directly on the control unit cover can be lead-sealed to prevent uncontrolled accessto the dials and protect the buttons on a Micrologic Pcontrol breakingThe shortest distancebetween two pointsInnovationE58878E58875E58874 MasterpactSchneider Electric7 Ready forthe futureCompliance withenvironmental requirementsSchneider electric fully takes into accountenvironmental requirements, starting right from thedesign phase of every product through to the end ofits service life.

10 C the materials used for Masterpact are notpotentially dangerous to the environment;c the production facilities are non-polluting incompliance with the ISO 14001 standard;c filtered breaking eliminates pollution in theswitchboard;c the energy dissipated per pole is low, makingenergy losses insignificant;c the materials are marked to facilitate sorting forrecycling at the end of product service upgrading ofinstallationsInstallations change, power levels increase, newequipment is required and switchboards must beextended. Masterpact is designed to adapt to thesechanges:c all control units are interchangeable;c communication with a supervision system is anoption that may be added at any time;c a reserve chassis can be pre-addressed so thatsystem parameters do not have to be modified whena drawout device is installed at a later date;c any future changes to the products will bedesigned to ensure continuity with the currentranges, thus simplifying installation many green circuitbreakers do you know?