Quality Products, Prompt Services, Trustful RelationshipsLUDHIANA. SCO-137, Feroz Gandhi Market, Ludhiana - 141 001 Tel: 0161 - 501 1193 Fax: 0161 - 405 867. ... Sona Shopping Centre,
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3937/B Behind HDFC Bank, G.B. Road, Delhi (India)-110006 Contact: +91-9971138071, +91-11-23212528 | Email: atul.lakhotia@kmindustrialcorp.com
www.kmindustrialcorp.com
Quality Products, Prompt Services, Trustful Relationships
SINCE 1989
KM Industrial Corporation has established itself as a trusted supplier of Electrical, Machinery and Industry Goods over a period of last 24 years. We supply to various industries including but not limited to Power generation plants, Cement Plants, Rolling mills, Railways, Rubber Factories, Textile Mills, Construction Equipment Manufacturers, Oil Refineries, Hospitals, Hotels and Corporate across the country along with a strong market presence in more than 10 countries including UAE, Saudi Arabia, India, Oman, US and Canada.
We, at KMIC, assure our clients of committed deliveries and excellent post sales service. This way we believe we sell peace of mind and help our clients focus on their core business. Most of our clients in various industrial areas in India and Middle East have been associated with us for more than 10 years now.
Our superior knowledge of products and focus on excellent relationships with clients remains our biggest strength and guiding force in our business. We have deep experience of working with big corporates in Oil & Gas and Construction sector in Middle East. We would be glad to have an association with you.
For details, Visit us at
www.kmindustrialcorp.com
Leading Exporters of:
• Control Panel Accessories • Switchgears • Contactors • Relays • MCBs • Circuit Breakers • Sensors • Automation Drives • Power Supplies • Control Transformers • DC Drives • Frequency Converters • PLCs • Electric Motors • Timers • Rotary Switches • Fuses • Semiconductor Fuses • Luminaires • LED Lighting • Power capacitors • Indicating Lights • Push buttons • Wires and Cables • Cable Lugs • Cable Glands • Energy Meters • Motor Starters • Motor Terminal Plates • Slip rings • All types of Carbons • Holders and Brushes • Generator Spares • Ball Bearings
LM Moulded Case Circuit Breaker
Protecting people, property & productivity
SP/C
S/M
LM21
/12’
03
NORTH71/1, Shivaji Marg,New Delhi - 110 015Tel: 011 - 2591 9184 / 85 / 86Fax: 011 - 2591 9188
EASTBerger House, 4th Flr, 129,Park Street, KolKatta - 700 017Tel: 033 - 2216 1006 / 7Fax: 033 - 2216 1003E-mail: gepceast.sales@geind.ge.com
SOUTHTemple Towers, 6th Flr, 476,Anna Salai, Nandanam,Chennai - 600 035Tel: 044 - 2432 9179 / 8053776 / 769Fax: 044 - 2433 7325
WESTSolitaire Corporate Park Bldg.No. 5, 6th Flr, 151,M. Vasanji Road, Chakala,Andheri (E), Mumbai: 400 093Tel: 022 - 2826 4819 / 55420Fax: 022 -2825 5410
AHMEDABAD405 - 406, Kirtiman Complex,Kinarriwala House, BehindCitiBank, Off. C.G. Road,Ahmedabad - 380 009Tel: 079 - 802 7386
REGIONAL OFFICES
CHANDIGARHSCO 36, Sector 26,Chandigarh - 160 002Tel: 0172 - 381 469 / 279 2123 / 27Fax: 0172 - 381 469 / 386 136
BHILAI25/1, Motilal NehruNagar (W), SBI Colony,Bhilai - 490 020Tel: 0788 - 504 0462Fax: 0788 - 503 6116
BANGALORE42/1, 45/14, Electronic City,Phase II, Banglore - 560 100Tel: 080 - 852 8355Fax: 080 - 852 8366
INDORE838, 8th Flr, Industry House,15, AB Rd, Indore - 452 001Tel: 0731 - 506 6838Fax: 0731 - 506 6859
BARODAPan Asia Executive Centre,606, Citadel, R.C. Dutta Road,Windsor Plaza Complex, Alkapuri,Baroda - 390 007Tel: 0265 - 331 578 / 359 038Fax: 0265 - 331 505 / 341 316
BRANCH OFFICES
JAIPUR448, 4th Flr, Ganapati Plaza,M.I. Road, Jaipur - 302 001Tel: 0141 - 236 8872 / 8040 /238 8675Fax: 0141 - 511 2802
BHUBANESHWAR252 / A , Lewis Road, 2nd Flr,Behind Goutam Petrol BunkBhubaneshwar - 751 016Tel: 0674 - 441 538Fax: 0674- 443033Mb: 98610 - 92783
COIMBATORE#3, Ist Flr, Venkatesa Nagar,Koundampalayam,Coimbatore - 641 030Tel: 0422 - 244 6087Fax: 0422 - 245 7644
PUNE41/14, Office Club,Swaroop Cmplx, Karve Rd,Pune - 411 004Tel: 020 - 400 3605 / 543 2074Fax: 020 - 546 3978
LUDHIANASCO-137, Feroz Gandhi Market,Ludhiana - 141 001Tel: 0161 - 501 1193Fax: 0161 - 405 867
JAMSHEDPURHouse No. 330, Road No. 7,Sonari New West Layout,Jamshedpur - 831 011Fax: 0657 - 424 056Ph: 98351 - 07504
SECUNDREBAD2nd Flr, 5-4-187 / 3&4 /10,Pearl ”N” NecklaceComplex, Karabala Maidan,M.G. Road,Secunderbad - 500 003Tel: 040 - 5531 1264Fax: 040 - 2754 3162
NAGPURFlat No.101, Atharva Aptms,Nelco Society,Subhash Nagar,Nagpur - 440022Mobile - 98225 78425
LUCKNOW101, Ace Business Center19, Vidhan Sabha Marg,Lucknow - 226 001Tel/Fax: 0522 - 223 7564 /760 / 432 / 33
GUWAHATIGanesh Bhavan, 2nd Flr,Rajgarh Road,Guwahati - 781 001Tel: 0361- 245 2481Fax: 0361 - 245 9060
KOCHIMayur Business Centre,Chittur Road, PullepadyJunction, Kochi - 682 035Tel: 0484 - 236 4139Fax: 0484 - 235 4262
NASHIKA/203, Sona ShoppingCentre, Ganjmal, Tilak Rd,Nashik - 422 010Mobile: 98223 20305Tel: 0253 - 250 9918
g42/1 & 45 / 14,Electronic City - Phase II,Bangalore - 560 100, India.Tel: 080 - 852 8355Fax: 080 - 852 8366E-mail: gepc.components@geind.ge.comwww.gepowercontrols.com/india
GE Power Controls
GE Power Controlsg
We are committed to continuous development and improvement of our products and thespecifications are subject to change without notice. Please contact our nearest sales office for conformation.
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
LM Pro Release with communication50 400 LM400B Ith 200A SGC8804430 SGC880403550 400 LM400B Ith 250A SGC8804420 SGC880402550 400 LM400B SGC8804410 SGC8804015
50 630 LM630B SGC8806220 SGC880601550 800 LM800B SGC8808170 SGC8808015
Accessories –Field Fittable100/125/160 DD160 SGC8301073
200/250 DD250 SGC8302055400/630/800 DD800 SGC8308041
For use with Aux Contacts AuxContacts(NC) EFM (3 Pole)Frame Code ref. Code ref. Code ref.
100 / 125 / 160 SGC8308027 SGC8308028 SGC8301046
200/250 SGC8308027 SGC8308028 SGC8302041400/630/800 SGC8308027 SGC8308028 SGC8304012
U/V Release S/T Release100/125/160 240V Factory fitted 110 –415V AC
415V 110 –220V DC SGC8301071200/250 240V SGC8302043
SGC8302053*415V SGC8302044 24-48V AC/DC SGC8301072
SGC8302054*400/630/800 240V SGC8308035 110-415V AC
SGC8304016* 110-220V DC SGC8308039415V SGC8308034
SGC8304017* 24-48V AC/DC SGC8308040 *UV release with delay 200 m sec, available on request
17
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
1
What’s New!!
� Now available in 3 Pole and 4 pole (100% Neutral rated) configuration.
� Continuous adjustable overload, short circuit and earthfault settings.
� Freedom of Mounting - can be mounted in horizontal as well as upsidedown (180 degrees) without change in any characterstics.
� Frame Size -Three basic frame sizes upto 800A. First frame covers 3.2A to160 A, Second in 200A / 250A and third in 400A / 630A / 800A.
� Breaking capacity available in 25KA / 35KA / 50KA & 65KA for different frame size.
� Microprocessor release for advanced protection, fault diagnostic triphistory, easy setting & communication capability with RS485 port andModbus Protocol.
� Field Fittable Accessories:
- New Door drive with Padlocking and door interlocking facility for eachframe size.
- New Undervoltage release with time delay for Generator application.
- Test socket for field testing of MCCB as a standard feature.
� Application:
- Suitability for Backup Protection, Motor application (CurveX)
- Category B for selectivity under short circuit condition.
The entire range of LM MCCB conforms to IS 13947-2-1993.
LM series Moulded Case Circuit Breakers from GE Power Controls come with all new customer friendly features making themsafer and versatile MCCB’s. While it addresses present day high end requirements by offering communication features, it alsoprovides reliability by running cooler with aluminium termination under tropical conditiions.
16
Ordering Information
LM MCCB with continuously adjustable Static Release
Breaking Capacity (Ics) Rating Type 3 Pole 4 Pole(kA) (A) Code Reference Code Reference25 3.2 LM100C SGC8848050 SGC8848041
25 6.3 LM100C SGC8854050 SGC8854041
25 12.5 LM100C SGC8860050 SGC8860041
25 25 LM100C SGC8866050 SGC8866041
25 50 LM100C SGC8872050 SGC8872041
25 100 LM100C SGC8801050 SGC8801041
25 125 LM125C SGC8890050 SGC8890041
25 160 LM160C SGC8896050 SGC8896041
25 200 LM200C SGC8188070 SGC8802041
35 3.2 LM100R SGC8848030 SGC8848021
35 6.3 LM100R SGC8854030 SGC8854021
35 12.5 LM100R SGC88560030 SGC8860021
35 25 LM100R SGC8866030 SGC8866021
35 50 LM100R SGC8872030 SGC8872021
35 100 LM100R SGC8801030 SGC8801021
35 125 LM125R SGC8890030 SGC8890021
35 160 LM160R SGC8896030 SGC8896021
35 200 LM200R SGC8188060 SGC8802021
50 3.2 LM100 SGC8848010 SGC8848001
50 6.3 LM100 SGC8854010 SGC8854001
50 12.5 LM100 SGC8860010 SGC8860001
50 25 LM100 SGC8866010 SGC8866001
50 50 LM100 SGC8872010 SGC8872001
50 100 LM100 SGC8801010 SGC8801001
50 125 LM125 SGC8890010 SGC8890001
50 200 LM200 SGC8188050 SGC8802001
50 50 LM250B SGC8188090 SGC8888001
50 400 LM400 SGC8804310 SGC8804001
50 630 LM630B SGC8806200 SGC8806001
50 800 LM800B SGC8808150 SGC8808001With Microprocessor Release – LM Pro
50 200 LM400B (In 200A) SGC8804390 SGC8804045
50 250 LM400B (In 250A) SGC8804400 SGC880405550 400 LM400B SGC8804320 SGC8804005
50 630 LM630B SGC8806210 SGC880600550 800 LM800B SGC8808160 SGC8808005
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
2
Features:
1. Reliable and Proven Design:
LM MCCB has proven performance record in most stringent operating environment.LM has been most preferred in applications like steel, power, paper, chemicaland textile plants. It is best suited for tropical Indian condition and its wideterminals are suited for aluminium conductors. High Breaking capacity is achievedthrough unique self repulsion contacts.
2. Robust Body:
The body is made of unique glass reinforced polyester which has high arc andthermal withstand, resistance to tracking and mechanical strength.
3. Current limiting:
LM MCCB operate on current limiting principle. This ensures high breakingcapacity, faster fault clearances and low let through energy resulting in reducedelectrodynamic forces and thermal stresses which prevents damage to theequipment, switchgear and conductors.
When a prospective current flows through the MCCB, the contact design, throughreversal of current ensures immediate seperation of the contacts even beforetripping occurs. The early seperation of the contacts ensures low let throughenergy in the system, thus ensuring high life of the connected equipments.
4. High Insulation Voltage (Ui):
The entire range of LM MCCB have a high insulation voltage of 1000V. Thisenhances the reliability of the breakers by providing a higher resistance toflashovers under fault conditions.
5. Frame Size:
Frames Rated Current Breaking Capacity (Icu)
Frame Size 1 3.2 A, 6.3 A,12.5 A, 25 A, 25 / 35 / 65 KA50 A, 100 A, 125 A, 160 A
Frame Size 2 200 A, 250 A 25 / 35 / 65 KA
Frame Size 3 400 A, 630 A, 800 A 50 KA
6. Mechanism:
The complete range of LM MCCB are quick make quick break, independentmanual type with trip free features. LM MCCB can be mounted horizontallyor upside down at 180 degrees with load side up and line side down withthe busbar connection at respective sides in case of constraint intermination. The new door drive mechanism in this case ensures uniform ON /OFF / TRIP indications on the panel door.
15
Effect of Current Limiting Device on ashort circuit in an AC network
Lower the let thru energy, lower the thermal stresses
Energy Value without current
Energy Value withcurrent limitation
Frame 1
3 Pole
Frame 2
4 Pole
Frame 3
3 Pole
Curve LM 400B / 630B / 800B(Microprocessor)
CurveX : CurveX MCCB
Curve G: Curve G MCCB
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
7. Testing:
A ‘Push to trip’ button is provided on the front to test the MCCB mechanically.LM MCCB’s are also provided with a ‘test socket’ for testing at site. With the useof test kit the operation of the MCCB can be easily verified even when it is inservice and is mounted in the panel.
8. Protection Releases:
� Static Release:
Static trip release is more versatile and offer accurate & closer protection to theswitchgear downstream. The operating characterstics of the release areindependent of ambient temperature.
Continuous adjustable overload protection available from 50% to 100% of therated current.
This wide flexibility in settings takes care of future increase in load capacity ofan installation and ensures better planning at an optimum cost.
Continuous adjustable short circuit setting from 2 times to 10 times of the ratedcurrent.
Protection against Earthfault:
Earthfault protection (EFM) can be provided in LM MCCB by mounting an addon module directly at the load end of the MCCB. This feature is available for 3phase 3 wire circuit only and is widely used for motor application.
Features of Field fittable EFM:
Continuously adjustable earthfault pickup settings from 15 to 80% of theIn current.
Continuously adjustable time delay from Instantaneous to 0.7 sec.
Manually resetable indicator for mounting on the panel board.
1 NO potential free contact available on indicator for remote indication orinterlock.
This module has CBCT in the housing itself and thus saves space and ensuresease in mounting.
For 3 phase 4 wire system, factory fitted earthfault with externally mountedCBCT with settings at 20%, 30% and 40% of nominal current are available.
3
Mounting of EFM
Adj. Setting Plug
Tripping Characteristics
Curve F: LM 250 B
Curve C: LM200C / 200R / LM200
Curve D: LM400B / 630B / 800B
Curve B: LM100C / LM100 R / LM100
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Push to trip
Test Socket
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
� Microprocessor Release:
Features and Benefits:
a. True RMS sensing - accurate and close protection
b. High repeat accuracy - reliable protection
c. Flexibility through multiple adjustment option - versatility & closer protection
d. Time delays on LT, ST & EF - suitable for discrimination
e. Trip history stores last five trips with causes - system diagnosis
f. Trip current indication - better understanding of type of fault
g. LCD display for reliable human interface - visual confirmation foradjustments & trip current.
h. Set-up programming - tripping curve parameters can be viewed, changedand stored for further operation
i. Status indication - gives the current status of the breaker - OK, pickup ortripped
j. Metering - displays the individual phase currents
k. Lock to prevent unauthorised setting and access
The microprocessor based release provides overload, short circuit andearthfault protection as standard feature, with following current & time settings:
Overload rated current - Ir 0.4 – 1.0, in steps of 0.1 In
Overload trip time at 600% Ir (sec) 0.2, 0.5, 1, 1.5, 2 , 3
Short circuit threshold 2 – 10 in steps of 1 of Ir
Short time delay (sec) 0.02, 0.05, 0.1, 0.2, 0.3
Instantaneous pickup threshold 2 – 10 in steps of 1 of In
Ground fault pickup threshold Disable, 0.2 – 0.8 in steps of 0.1 of In
Ground fault delay (sec) 0.1 to 0.4 in steps of 0.1
LCD Display
4 13
LM with Micro Processor Release MCCB - EFM connection
Mounting details for EFM
100 A 250 A
Cut - out details for indicator of EFM
400 / 630 / 800 A
EM 400 Z 3 / 630 Z 3 / 800 Z 3
EM 250 A
EM 100 Z3
All dimensions are in mm
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
5
LM Pro + C release provides all standard feature of microprocessor MCCB with additional communication facility.
This enables remote monitoring and control of equipments. The communication version displays all the data on a remoteterminal. This versioin also gives trip feature over MODBUS protocol.
� Microprocessor Release with Communication Feature:
Display on Computer Screen with Communication release MCCB
Communication address 1 - 255
Communication cable Single / Two pair twisted wire with ground shield.
Communication connector 9 pin female D on MCCB
Communication electrical standard RS485
Communicating protocol MODBUS, RTU type
Communication Speed (bits/sec) 9600
Maximum MCCBs on a communication bus (nos.) 32
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Mounting Details of MCCB with Door Drive
Four PoleThree Pole
All dimensions are in mm
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
9. Accessories:
The Accessories provided are field fittable and are common for static ormicroprocessor MCCB and thus offers flexibility to users for modification at laterdate to order as per site requirements.
� Alarm and Auxillary Switch:
These switches are conveniently fitted by removing the lid at the front face of theMCCB. These can be mounted at the site.
Alarm switches are designed to operate whenever the MCCB trips.
Auxillary switch operates with the opening and closing of the MCCB thusindicating the breaker contact status (‘OFF” / ‘ON’).
� Voltmetric Releases:
Shunt release can be easily mounted in the lid at the front face of the MCCB.This is a short time rated coil and hence is recommended to be used with auxillaryswitch to disconnect release after operation. This provides remote tripping ofthe MCCB.
All releases are common for equivalent AC and DC voltages and are availablein wide voltage range. The ratings available are 110-415V AC / 110V-220V DC,24-48V AC / DC.
Electro-magnetic type Undervoltage release with field fittable option is availablein Frame 2 & Frame 3 MCCB’s, whereas in Frame 1 factory fitted electronic typerelease is available. The purpose of this release is to trip the MCCB if the supplyvoltage drops to a value below prescribed voltage limit. The standard setting is60% of the rated voltage. However settings of 50%, 70%, 80% are available onrequest.
To prevent nuisance tripping due to momentary voltage dip, undervoltagerelease with a time delay of 1+0.20 sec is available. This is particularly useful forgenerator application.The voltage ratings available are 240 / 415V AC.
Combination of Accessories
Frame 1 & 2 - 160 / 250 A:
With shunt trip release, no other accessory can be provided, as 1 NO contactsof the auxillary switch to be wired in series with the shunt release coil.
Without shunt trip release any combination of 2 (NO or NC) auxillary switchescan be mounted.
Frame 3 - 400 / 630 / 800A:
Total combination of 3 auxillary / alarm switches (2 NO + 1NC, 1 NO + 2 NC)combination can be chosen.
However for use with Shunt release 1 NC contact of aux. Switch to be wired inseries with the shunt release coil.
Please note that only one voltmetric release can be fitted in Frame 2 andFrame 3 MCCB. In Frame size 1, both shunt trip and UV can be used. The UVrelease provided in Frame 1 is factory fitted.
6
Auxillary Switch
Shunt Release
UV Release
Door Drive Details
11
Frame 3 - LM 630B / 800B
All dimensions are in mm
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
10
Door Drives:
LM MCCB comes with all new feature packed, user friendly door drives. It hasan “OFF” position placed at 9 o’ clock and the “ON” position at 12 o’ clock. Thethird position “TRIP” is located between the “ON” and the “OFF” position.
The door drive is easy to mount and provides IP 54 protection.
The door drive takes care of the uniformity in the position of the handle on thepanel door when MCCB is mounted upside down. The operating handle ensuresthat irrespective of the mounting of MCCB, the quadrant of operation of thehandle remains same.
These door drives provide door interlock facility in the “ON” position. Besidesprovide padlocking facility to lock the MCCB in “OFF” position. Also availableon request is “ON” position padlock.
Door Drives
DD 160
DD 250
DD 800
Terminal Shrouds
7
Terminal Shrouds:
Terminal shrouds are provided for 160 / 200 / 250 A MCCB.
Phase Barrier:
Also available are phase barrier for Frame 1, 2 & 3. These ensures a correctdielectric seperation of the connection terminals.
Frame 1 - LM 160
Dimensional Details
Frame 2 - LM 200 / 250 B
Frame 3 - LM 400 B
Note : Top terminal dimensions for 630 and 800 ampere rating are different. Refer adjacent page (page 11) for dimensions
3 Pole 4 Pole
All dimensions are in mm
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
LM Moulded Case Circuit BreakerLM Moulded Case Circuit Breaker
Microprocessor based MCCB also available in 200 A and 250 A rating in Frame 3Note: (1) Neutral 100% rated
(2) Factory fitted(3) EFM for Frame 1 available upto 100A* Ref. our branch office for details
8
Backup Protection:
One of the operational requirements for a protective device is that its rated shortcircuit breaking capacity is either equal or greater than the prospective shortcircuit current at the point where it is installed.
Thus the upstream device must possess the necessary rated short circuit breakingcapacity. The upstream device must coordinate with the downstream device in amanner that will limit the energy and short circuit values to levels that thedownstream device can handle.
With LM, the unique self repulsion contact system limits the energy and currentvalues of prospective faults to extremely low values.This allows the use of lowbreaking capacity downstream devices while maintaining the overall systemprotection.
Motor Protection:
LM Curve X MCCB is exclusively used for motor protection. It offers a completeand reliable protection to LV motors. The basic principle of operation is that itallows the contactor which is always available in the motor feeder circuit to clearoverload faults, this reduces the strain on the MCCB contacts thereby enhancingthe life of the MCCB and provides for automatic resetting afterfault clearance.
Curve X MCCB trips for short circuit through opening of its own contacts thusprotecting the contactor and the motor from high current faults. Since contactoris a switching device and has more mechanical life, this combination increasesthe systems performance and provides higher life.
The Curve X MCCB’s comes with field fittable accessories. Manual reset optioncan be provided on request.
Features:
- Built in electronic overload sensing (50% to 100%) thus eliminating needfor external bimetal relay resulting in saving of cost,space and wiring.
- Built in single phasing and phase reversal protection thus eliminating needfor an external device.
It senses phase reversal and single phasing through static circuitry andopens up the motor feeder by activating the external contactor available inthe motor circuit.
These MCCB are available in three frame sizes from Ith 3.2 Amps to400 Amps and uses same accessories as for LM MCCB’s.
Selectivity:
LM range of MCCB are suited for category B applications. When two currentlimiting breakers of similar rating and similar settings are in series under shortcircuit conditions, both MCCB might trip for a downstream fault and cause lossof supply to healthy loads. To avoid this, a short time withstand current (Icw)capability is required by upstream breaker so that it can delay operation briefly.This feature is available in our Frame 3 size MCCB. Since normally higher ratingMCCB are used as an upstream device. LM MCCB can be used forcat-B application with restricted breaking capacity.
CurveX MCCB
9
Technical ParticularsCharacterstic / Frame 1 2 3
Type LM 160 LM200 / LM250 LM400 / LM630 / LM800
Number of poles 3 P / 4 P (1) 3 P / 4 P(1) 3 P / 4 P(1)
Rated Current In Amps 3.2, 6.3, 12.5, 25, 50, 200 / 250 400 / 630 / 800
100, 125, 160Rated Insulation Voltage Ui Volts 1000 1000 1000Rated operational Voltage Ue Volts 415 415 415Ultimate breaking capacity at 415V - Icu KA rms 35 35 65 35 35 65 50Service breaking capacity - Ics KA 25 35 50 25 35 50 50
Utilization category A A A B*
Protection Static Static Static/Microprocessor@
Overload rated current - Ir Continuous from 50 to 100%Short circuit (min - max settings) Continuous from 2 to 10 timesTotal operating time on short ckt msec 8 to 12 8 to 12 8 to 12Mechanical Operation andOperational Performance category As per IS 13947-2/IEC947-2
Terminal capacity Cable sq.mm 1 x 70 1 x 150 -
Busbar mm 20 x 6 32 x 6 2 x 50 x 10Field Fittable Accessories (Optional)Auxillary Switch 1 1 2Alarm Switch 1 1 1
Shunt Release 110V - 415V AC (1 NO 110V - 415V AC (1 NO 110V - 415V AC (1 NCaux switch to be used) aux Switch to be used) aux switch to be used)
Under Voltage Release Electronic(2) (240V / Electromagnetic (240V / Electromagnetic (240V /415V AC) 415V AC) 415V AC)
Earth fault Release (current setting) 20% to 80% continuously adjustable(3)(In)Earth fault Release (time setting) Instantaneous, 0.4 sec, 0.7 sec continuously adjustableDoor Drive DD160 DD250 DD800
DimensionsDepth mm 131 131 125Height mm 200 270 406
Width (3 pole) mm 118 145 210Width (4 pole) mm 157 191 280Weight (3p / 4p) Kg 3.8/4.2 5.7/6.5 12.3/15
@ Characteristics of Microprocessor as followsOverload rated current - Ir x In (A) 0.4 – 1.0, in steps of 0.1Overload trip time at 600% Ir Sec 0.2, 0.5, 1, 1.5, 2 , 3
Short circuit threshold x Ir (A) 2 – 10 in steps of 1Short time delay Sec 0.02, 0.05, 0.1, 0.2, 0.3Instantaneous pickup threshold x In (A) 2 – 10 in steps of 1Ground fault pickup threshold x In (A) Disable, 0.2 -0.8 in steps of 0.1Ground fault delay Sec 0.1 to 0.4 in steps of 0.1
Available at: KM INDUSTRIAL CORPORATION 3937-B BEHIND GB ROAD DELHI-110006 Ph: +91-9971138071, +91-11-23212528 E:contactus@kmindustrialcorp.com, W:http://kmindustrialcorp.com
Contact us at: +91-9971138071; contactus@kmindustrialcorp.com http://kmindustrialcorp.com
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