Magnum IEC Low Voltage Air Circuit Breakers - Eaton

1 MagnumIEC Low Voltage Air Circuit BreakersProduct FocusUp to 690 Vac42 kA to 100 kA Icu800 to 6300 AmperesEN 60947-2A Global Source for InnovativeElectrical Power Distribution SolutionsProven and AgainFor over 70 years, Eaton s Cutler-Hammer business has designed,engineered and manufactured low Voltage Circuit Breakers andtrip units for the global market. Our revolutionary productdevelopments and solutions continue to set the standard forquality, reliability, and extended operating are an industry leader in air Circuit breaker technologyinnovations such as the first solid-state trip unit, the firstmicroprocessor-based trip unit, zone selective interlocking, andthe DE-ION arc extinguisher design, providing superior arcquenching Less SpaceThe advanced arc running system enables Magnum to controlthe arc direction, while also providing for higher interruptingcapacity in a smaller ratings in less space provide the flexibility to designmore robust electrical distribution systems capable of handlinglarger available fault currents, and providing better coordinationwith downstream Breakers are designed for use in low Voltage assem-blies: switchgear, switchboards, motor control centers, andtransfer switch FirstMuch consideration was given to operator safety and systemsecurity.

2 See the features that optimize safety: Improved C-loop current path design provides dramaticenhancements in both safety and efficiency. Higher current ratings increase the blow-on forces on thecontact surfaces, allowing the proper downstream protectivedevice to open, isolating the fault and increasing uptime. Positive On is indicated on the breaker faceplate. This uniqueinterlocking feature prevents the levering door from beingopened if the contacts are welded, protecting personnel fromexposure to live primary contacts. Making current releaseprevents the breaker from closing in on a fault with peakcurrent exceeding 25 times the RMS nominal current. Keyed sensor plugs ensure error-free installation of the sensorin the field. Deadfront faceplate isolates the operator from the primaryvoltage when the breaker is energized. Anti-pump prevents any attempts to reclose the breaker on ashort Circuit fault if the close signal (mechanical or electrical)is Circuit the Customer in Mind!

3 123456789101112131415 High Withstand a Compact SizeCutler-Hammer innovations meet the needs of today s modern aircircuit Breakers : The capability to design more flexible systems that canwithstand larger available fault currents. Better coordination with downstream devices. Reduced size of the switchgear assembly. Integrally designed breaker levering mechanism and cassettefor draw-out breaker with clear indication of connect, test, anddisconnect the ChallengeMagnum Breakers are engineered specifically for use inlow Voltage assemblies applied at nominal voltages of 380/415,440, and 500/690 Vac. Ten continuous ratings 800 A through6300 A are covered with two frame sizes. A third, new NarrowFrame design, allows even greater space savings than everbefore. Draw-out and fixed mounting units are available in 3- or4-pole and indicators are conveniently grouped on thebreaker s front escutcheon where they can be easily viewed andaccessed through a cutout Withstand Ratings.

4 Magnum provides high interruption andwithstand ratings in a small physical Design. All controls, indicators, and the tripunit are visible and can be safely accessed without opening thecompartment Height and Depth. All three Magnum frame sizes havethe same identical height and depth to facilitate standardizeddesigns in low Voltage panel Trip Unit Family. A full range of Digitrip programmableand electronic trip units has been expanded to offer customers achoice of protection, information, and communication capabili-ties to meet specific independently operatedand lockable shutter designprovides a safe environmentwhen the breaker is removedfrom the view of integrally-designed cassette showinggenerous spacing for customerbus connections. 1 Integral Arc Hood 2 Front Mounted Secondary Contacts 3 Trip Flag (Optional) 4 Three Accessory Windows 5 Spring Status Indicator (Charged or Discharged) 6 Contact Status Indicator (Open or Closed) 7 Digitrip RMS Trip Unit 8 Push On to Close breaker Button 9 Push Off to Open breaker Button 10 Manual Charging Handle 11 Drawout Cassette 12 Optional Operations Counter 13 Optional Off Key Lock 14 Integral Padlockable Levering Device 15 Colour-Coded breaker Position Indicators 800 800 800 800 ~ 800 800 4000 4000 4000 1000 1000 1000 1000 ~ 1000 1000 5000 5000 1250 1250 1250 1250 ~ 1250 1250 6300 6300 ~ 1600 1600 1600 ~ 1600 1600 ~ 2000 2000 ~ 2000 2000 2000 ~ 2500 2500 2500 ~ 3200 3200 3200 40/40

5 50/50 65/65 65/65 65/65 85/85 100/85 4 65/65 85/85 100/100 40/~ 50/~ 3 65/40 65/~ 65/50 85/65 85/65 65/~ 85/~ 100/~ 30 30 40 50 50 70 413 1120 336 909 1036 43 58 to 68 54 72 to 86 48 70 to 86 62 88 to 112 166 200 28 53 to 56

6 32 55 to 68 40/40 50/50 65/65 65/65 65/65 85/85 7 65/65 85/85 100/100 40/~ 50/~ 3 65/40 65/~ 65/50 85/65 7 65/~ 85/~ 100/~ to 1250 to 2000 to 2000 to 1600 2000 to 2000 ~ to 4000 to 4000 to 4000 43 55 69 55 55 69 ~ 138 138 138 ~ ~ ~ ~ 2500&3200 2500&3200 ~ ~ 5000&6000 5000&6000 ~ ~ ~ ~ 110 110 ~ ~ 217 217 Circuit breaker Characteristics 1 2 Continuous Current Rating (Amps at 40 C) Magnum Frame Narrow Frame (MWN)Standard Frame (MWI)Double-Wide Frame (MWI)Interrupt Ratings at 690 Vac Icu/Ics (kA rms)Withstand Rating Icw 1-sec/3-sec (kA rms)Maximum Break Time (msec)Maximum Closing Time (msec) Circuit breaker Dimensions (mm) 5 Height Depth Width (3-pole) Width (4-pole)

7 Height Depth Width (3-pole) Width (4-pole)FixedDrawoutCircuit breaker Weight (kg) 5 (3-pole) (4-pole) (3-pole) (4-pole) (3-pole) (4-pole)FixedDrawoutCassetteNon-Auto Switch CharacteristicsMaximum Interrupt Ratings at 690 Vac Icu/lcs (kA rms)Withstand Ratings Icw 1-sec/3-sec (kA rms)Continuous Current Range (Amps)Close and Latch Current (kA Peak) 6 Maximum Continuous Current Range (Amps)Close and Latch Current (kA Peak) 6 Characteristics TableMWN Narrow FrameMWI Standard FrameMWI Double-wide FrameMagnum Characteristics, Dimensions and Weights1 = Circuit Breakers equipped with integral trip units have a making current release set to trip instantaneously at 25 x In peak current to prevent closingon a fault current exceeding that = Magnum ACB s carry an IT rating at 440 Vac per EN60947-2 Annex H.

8 Contact The Cutler-Hammer business for 690 Vac IT = The Icw 1-sec/3-sec rating is 50/30 kA for 2000 amp MWN 50kA = Standard frame Circuit Breakers rated 100kA are equipped with a high instantaneous trip set to protect above 85kA rms. Icu is 100kA and Ics is 85kAat 440 Vac. Icu and Ics are 85kA at 690 = The approximate weights and dimensions shown are based on horizontal = Close and latch ratings are applicable only to non-automatic switches. Non-automatic switches should be applied with a suitable externalovercurrent device with instantaneous trip to protect above the published close and latch = The maximum available instantaneous interrupting rating for the standard frame non-automatic switch is Ampere Standard Frame4000-6300 Ampere Double Wide FrameMagnum Air Circuit Breakers have common heights and depths tofacilitate standardized designs in low Voltage panel Ampere Narrow FrameDesigned for Easy Access, Inspection,and Minimal MaintenanceThe stored energy mechanism, control devices, accessories, andsecondary contacts are easily accessible by removing the in place by four captive screws.

9 For safety, this canonly be done when the breaker is in the disconnect position or re-moved from the current sensor viewing window on the rear of the breaker al-lows for easy identification of the current sensor mounted contact wear indicator eliminates the need for elaborate testingto determine if the contact assembly needs minor replacement functions involving the mechanism, con-trol, and/or accessories can be easily rear view of a Magnum drawoutbreaker shows the designed-in safetyfeature of locating the primary discon-nects and secondary contacts on theremovable breaker element for easy andsafe inspection. 1 Secondary Wiring Points 2 Field Installable Accessories (Three Maximum) 3 Digitrip RMS Trip Unit 4 Optional Electric Charging Motor 5 Manual Charging Handle 6 Optional Operations Counter 7 Optional Off Key Lock 8 Padlockable Levering Device 9 breaker Position Indicator 10 Secondary Contacts 11 Arc Chute Covers 12 Primary Finger Cluster Disconnects 13 Current Sensor Window 14 Rigid Frame HousingPositioning of the secondary contact subassembly is dedicatedfor installation, maintenance, and testing.

10 Top view shown withbreaker cover removed, bottom of photo is front of Look Insidethe Magnum9 Two-Step Stored Energy Mechanism for Manuallyand Electrically Operated BreakersThe potential energy is stored in the mechanism to close thebreaker in five cycles or less. Sufficient energy to open the breakerremains available following the closing closing, the charging spring can be recharged to provide po-tential energy for reclosing following a fault, providing high conti-nuity of service. This feature allows for the following sequence:charge close recharge open close manually operated Breakers , closing springs are chargedby hand. For electrically operated Breakers , springs are chargedby an electric motor but can be manually charged if no poweris Structure Widths Offer Greater Capacityin Less SpaceThe Magnum has been engineered to fit into three space-saving structure widths for 3-pole units. The Magnum breakerprovides opportunities for more Circuit Breakers in less space means greater cost savings regardingassembly time, number of assembly structures, and finalinstallation Design ensures User-Friendly Operation, Visual Indication, andOptimum SafetyThrough-the-door design provides clear visual and physicalaccess to the trip unit and ALL breaker controls open and close buttons, the open/closeindicating flag, the charging handle, breaker interlock, and thespring charge/discharge flag.