Larsen and Toubro Limited Hyderabad, Telangana

Salient Features Micro-controller based design Draw Out type construction Inverse & Definite time trip characteristics Field selectable input ranges

Measurement of Voltage, Current and Frequency with power factor makes this a compact and competitive solution to replace analog meters and associated selector switches with it. The VAF + PF WL4110 series is available in Class 1 and 0.5 with optional RS485 port. Parameters: VLL, VLN, A, F, PF, On Hrs, RPM, Apeak. Salient features Accuracy Class 1 as per IEC 62053-21 and Class 0.5 as per IEC 62053-22 True RMS measurement Password protection site selectable Auto and manual scrolling. Field programmable CT, PT ratio Site selectable 1A/5A Phase wise and average display of voltage and current as per applicable meter Inbuilt selector switch for 3 phase models Site selectable for 3 Phase 4 wire, 3 Phase 3 wire, 1 phase Wide operating range of 80 to 300 V AC/DC auxiliary supply in 4110 series Suitable for 50/60 Hz

Vacuum Contactor Units from L&T are three-pole contactors with electromagnetic operating mechanism for medium voltage switching applications. Applications such as neutral grounding of Generators, operations of soft starters, Reactor Capacitor switching, motor switching duties need numerous switching operations. Effective & efficient switching in such areas with high operating voltage is achieved with Vacuum Contactor Units.Our VCUs are suitable for system voltage up to 12kV and short circuit capacity up to 50kA, with HRC fuse.  L&T VCUs come with latched & non-latched configurations. Design, manufacturing & testing processes of VCUs meet international demands through a compliance of IEC 62271-106. Features: Fused Short circuit protection up to 50kA Available in latched & non latched configurations Encapsulated current carrying parts for higher safety Truck mounted design similar to VCBs Suitable for motor starters with numerous switching operations VCU panels can be coupled with VCB panels owing to similar dimensions

We offer half panels and sub-cubicles for 11kV. The VCB is ‘draw out’ type and can be racked out directly on the floor. VCBs are type tested according to International Standards IEC-62271 at renowned laboratories. They are compact, safe and reliable. The sub-cubicle is VCB with its compartment having all safety interlocks. The half panel is an assembly of the medium voltage compartments except for low voltage compartment. Features: Sub-cubicle for system voltage 11kV and a short time current rating of 26.3kA Half panel for system voltage 11kV and short time current rating of 26.3kA and 40kA Half panel comes with an option of Copper/Aluminium bus-bar VCB current rating upto 3150A Provision of manual and electrical spring charging in VCB Spring charging motor voltage 230V AC and 110V DC/220V DC Closing/Tripping coil voltage 24V DC/110V DC/220V DC VCB comes with inbuilt anti-pumping feature

SC14S1 phase High Impedance Earth Fault RelayApplication: Differential protection, REF protection MD32-TMPercentage Biased Transformer Differential Relay TCOMPComprehensive Transformer Control Metering Protection for Transform feeder

Our range covers Timers, Time Switches, Supply Monitors and Hour Meters & Counters. Timers and supply monitoring devices find their use in a wide variety of applications in the industry. L&T's reliable Timing devices and Supply monitors from GIC over the past four decades have provided the best solutions to its customers Time Switches are used for fixed time based daily / weekly applications. They are ideal for lighting applications and are also used to control air-conditioners / coolers, geysers, conveyers, pumps & exhaust fans etc. Timers are used to control processing times in a wide range of applications which includes star to delta changeover operations in Motor control / Starter panels, elevators, conveyor belt sequences, air conditioning systems, warning light systems etc. The supply monitors ensure reliable detection of phase parameters such as phase loss, phase sequence and phase unbalance in all three-phase networks. They find application in HVAC, welding machines, elevators and cranes, etc. The Current Monitoring Relay provides monitoring and protection of loads against overload, under load, phase loss, phase asymmetry and phase sequence faults. Their applications include all motor and pump protection panels with single phase and three phase supply. The Earth Leakage Relay monitors, detects and protects power systems from earth leakage faults with wide selectable range of 30 mA to 30 A. They are widely used in mines and in Gen sets.

Thermal overload relays are protection devices required in various motor starter combinations. L&T’s range of contactors complements its range of thermal overload relays. These are available for various DOL/ Star delta combinations.  They have a built-in sensitive mechanism which protects the motor from overload and single phasing. Features of our thermal overload relays Type RTX & MN-suitable for MNX contactors Ratings: RTX Relay 0.23A-41A MN Relay 0.2A-570A Inbuilt single phasing protection Suitable for direct/separate mounting Built-in ‘START’ and ‘OFF / RESET’ push buttons Auto and manual reset modes Ambient temperature  compensation: -5 C to +55 C Electrically separate NO contact Conformance to IEC 60947-4-1 and IS/IEC 60947-4-1 Type RTO- suitable for MO contactors Ratings: 0.23A - 110A Phase failure sensitive Visual status indication Sealable transparent cover Auto/manual reset function Ambient temperature compensated Conforms to IEC 60947-4-1 & IS/IEC 60947-4-1

  S-D-F range covers ratings from 32A to 800A. S-D-F’s range is available in both open execution & Sheet steel enclosure version (Suitable for 14x51 Cylindrical, DIN, BS type fuse-link) S-D-F range provides users with a high level of safety & Convenience. The complete range conforms to IS/ IEC60947-3 standards. It also carries the CE marking signifying compliance to stringent European safety norms. S-D-F's superior features translate into better safety & convenience for the users. Fuse barriers & Terminal shrouds provide protection against accidental direct contact. Terminal shrouds also protect against phase to phase short circuit through an external conducting path. Double isolation of fuses when S-D-F is in OFF position makes replacement of fuses risk-free. Positive ON / OFF indication ensures that the handle indicates OFF position only when main contacts are actually open. Large ground clearance eliminates possibility of phase to ground flash over. Built-in padlocking arrangement provided to lock the unit in OFF position prevents inadvertent operation of the unit. Versatile handle The handle coupling has the following user-friendly features:- Door interlock (defeatable)- Padlock up to 3 locks- Choice of operating quadrant- Flexibility (± 3mm mismatch operational quadrant) The Switch-Disconnector-Fuse provides complete Flexibility in mounting; Unit can be mounted at any angle in a vertical plane. Handle depth can be varied and fixed as per requirement during installation. This is possible because the telescopic shaft can be adjusted for stepless variable depth.

S-D-F range covers ratings from 32A to 2000A. S-D range is available in both open execution & Sheet steel enclosure versions. S-D-F range provides users with a high level of safety & convenience. The complete range conforms to IS/ IEC60947-3 standards. It also carries the CE marking signifying compliance to stringent European safety norms. S-D superior features translate into better safety & convenience for the users. Terminal shrouds provide protection against accidental direct contact. Terminal shrouds also protect against phase to phase short circuit through an external conducting path. Positive ON / OFF indication ensures that the handle indicates OFF position only when main contacts are actually open. Large ground clearance eliminates possibility of phase to ground flashover. Built-in padlocking arrangement provided to lock the unit in OFF position prevents inadvertent operation of the unit. Versatile handle The handle coupling has the following user-friendly features:- Door interlock (defeatable)- Padlock up to 3 locks- Choice of operating quadrant- Flexibility (± 3mm mismatch operational quadrant) The Switch-Disconnector provides complete Flexibility in mounting; Unit can be mounted at any angle in a vertical plane. Handle depth can be varied and fixed as per requirement during installation. This is possible because the telescopic shaft can be adjusted for stepless variable depth.

L&T Agriculture Submersible Flat Cables are made of bright, plain multi-strand annealed copper conductor, as per class 5 of IS:8130:1984. These cables are used for Agricultural submersible pump set applications and are available in 3 core - 500 meter & 1000 meter drums. Voltage Grade 1.1 kV (1100 V) conforming to IS:694:1990. L&T XLPE Agricultural Flat Cables - These wires are made of cross-linked polyethylene material with high continuous conductor temperature - 90 C and high intermittent overloading - 130 C. Since it has better corrosion resistance, it is suitable for alkaline hard water areas.

L&T offers a range of Agricultural Electrical Products, as LTLK - the brand that has served farmers for over 60 years. Agricultural Electrical Products include electrical starting solutions, submersible pumps, monoblock pumps and domestic pumps. The offerings also include starters, controllers for 1-phase and 3-phase submersible pumps. M-POWER – Module for Starters & Controllers is a high technology product for operating pumps through mobile phones from a remote location.

L&T’s range of capacitor duty Contactors is specially designed for capacitor switching applications. As capacitor switching is associated with high inrush current, the contactors are provided with damping resistors which limit the value of inrush current to a safe value. The contactors are used in APFC panels for switching power capacitors. Selection of these capacitors depends on the amount of reactive power compensation required. Features Separately terminated de-latching contacts for enhanced operational reliability Improved switching performance Dual contact gap for auxiliary contacts Separate termination of damping resistors Encapsulated resistor assembly Wide and chatter-free operating band Higher electrical life Enhanced product safety  Single pole contactors MR range of single pole contactor caters to single phase applications. The contactors are rugged and have a wide operating band. Typical applications include Compressors in air-conditioning equipment, Single Phase Pumps, Single Phase Power Supply, Single Phase Heater etc. Their high AC-1 rating ensures better overload capacity. Features Range 16A-40A AC-3 Conforms to Conforms to IEC 60947-4-1, IS /IEC 60947-4-1 standards Available with screw and fast on type terminations (Optional)

True RMS measurement of voltage and current parameters are achieved by single function Ammeter (WL1110 / WL1310) and Voltmeter (WL1120 / WL1320) series. These are available in Class 1 and 0.5. Salient features Accuracy Class 1 as per IEC 62053-21 and Class 0.5 as per IEC 62053-22 True RMS measurement Password protection site selectable Auto and manual scrolling. Field programmable CT, PT ratio Site selectable 1A/5A Phase wise and average display of voltage and current as per applicable meter Inbuilt selector switch for 3 phase models Site selectable for 3 Phase 4 wire, 3 Phase 3 wire, 1 phase Wide operating range of 80 to 300 V AC auxiliary supply in 4110 series Suitable for 50/60 Hz

CAM Operated Rotary Switches are used to perform make and break operation in a sequential way by rotating the switch to different positions.The CAM, which closes and opens the contacts, has rotary movement in multiple positions, thereby controlling multiple circuit functions. Further the flexibility in the switch type selection covering various current / voltage ratings and options to select the number of contacts, is an added advantage. This ensures that a right switch is chosen for the desired application. CAM Switches thus offer complete design flexibility to assemble complex switching programs, contact ratings and customize all switching applications. Cam Switches are suitable for AC as well as DC switching applications. The basic operating mechanism of cam switch is intended to suit application coupled with ‘Quick-Make’, ‘Quick-Make-Quick-Break’ and ‘Spring Return’ operating mechanisms. The CAM switches offers versatile mounting options in addition to standard panel / flush mounting and other special features like single hole, door interlocking, padlock, lock and key for various needs. The wide option such as type of knob, front plate colour and customized marking on the marking plate eliminates the need of separate label on the panel. Superior quality of engineering material and ‘double butt’ contacts with silver bimetal on copper / brass provide stable electrical performance. The high-grade engineering plastics with high tracking index like nylon, silicon and glass filled polyamide for the components ensures greater mechanical strength. Advanced manufacturing processes for CAM switch components under stringent quality conditions ensure durability, reliability and enhanced life. Load Break Switches comply with the latest specifications for modern low voltage devices. Outstanding electrical characteristics of LB Switches with compact design, contribute to space saving and operational convenience. The construction and design of the switch make it compact, safe and highly reliable. The switch uses polyamide glass filled material, having excellent track resistance (CTI) for insulation to prevent flashover between phases in the most severe conditions. The special contact design and configuration makes the switch highly reliable to withstand high short circuit currents. Features: Double break contracts Polycarbonate shroud for wired terminal protection is included Excellent switching and high short circuit capacity Compact and reliable Versatile mounting options, i.e. front mounting, rear mounting DIN 35 and enclosure mounting Quick, simple and convenient, dia. 22.5 mm single hole mounting is offered for 16A/20A switches with padlocking option Finger protection - IP 20 Terminal screws with fixed clamp for easy wiring Add-on main/neutral/auxiliary contacts can be mounted on both sides of the switch at site 4th Pole addition is possible at site Applications Isolator, Motor Start and Stop, Manual Motor controller as Motor Disconnect, Main Switch, Emergency ON-OFF. Control Switch, Changeover Switch

L&T’s wide range of power contactors is available in single pole, two pole, three pole and four pole configurations. These configurations and current rating in each configuration ensures that each customer requirement is satisfied. Solutions are available for every application like motor starter, agriculture pumps, genset applications, street lighting and switching to alternate source of supply, DC application. Our all contactors are as per IS/IEC 60947-4-1. Our range of power contactors include:- MO three pole contactors Rating: 9A to 110A AC-3 duty Compact Dimensions: Space saving DIN Rail mounting upto 110A Box clamp termination and terminal shrouds for power terminals Lug less termination Low VA consumption RoHS compliant MNX three pole contactors Rating: 9A to 650A AC-3 duty Entire range is UL Listed Easy inspection and replacement of coils and contacts Alpha-numeric terminal markings Front ON/OFF indication Aesthetic appearance CE Marked and CSA approved Operating band from 65 % to 120% up to 32 A ML three pole contactors Rating: 25A to 300A AC-3 duty Easy inspection and replacement of coils and contacts Alpha-numeric terminal markings Robust Design suitable for tropical conditions MX (Mini) Power Contactors Rating: 6A to 12A AC-3 duty Enclosed construction for compactness and convenience AC & DC coil available Base as well as DIN rail mounting facility Built in surge suppressor for DC coil contactors Low VA consumption MDX DC coil three pole contactors Permanent magnet coil technology Compact size Low VA consumption Wide operating band Complete range suitable for DIN rail mounting IP20 connection security Snap On Installation Four terminal coil Built-in Surge Suppressor for contactors rated from 9A – 38A MCX Four pole contactors Ratings: 16 A to 800 A AC-1 duty Suitable for supply changeover and genset applications Available in five frame sizes and nineteen current ratings Alpha-numeric terminal marking Wide operating band up to 100 A AC-1 MU-2P Two pole contactors True 2 Pole contactor with Neutral Isolation Suitable for single phase pump and motor applications Suitable for low voltage condition High temperature withstand capability Protection of coil from humid environment Available with wide band coil

Multifunction meters offer all basic, energy and power parameters along with power quality parameters of THD and k factor. Parameters: 4410 series: V, A, F, PF, kW, kVA, kVAR, kWh, kVAh, kVARh, Runhours, On hours, Phase angle, Interrupts, THD, Events (High-Low), Neutral Current, k factor 4420 series: All parameters of 4410 series plus Maximum Demand (kW & kVA) 4430 series: All parameters of Model 4420 series plus Bi-directional (Import-Export) 4440 series: All parameters of 4410 series plus Maximum Demand with Real Time Clock (RTC) and Events (high-low) with time stamp Salient features Accuracy Class 1 as per IEC 62053-21 and Class 0.5, 0.5S, 0.2, 0.2S as per IEC 62053-22 True RMS measurement Expert in Load monitoring Password protection provision for security Phase wise Voltage & Current wave forms in LCD meter Site selectable for 3 Phase 4 wire, 3 Phase 3 wire, 1 Phase Maximum Demand measurement with Real Time Clock in 4440, 5000 & 5010 series Auto scrolling and freeze mode for constant single page viewing available Terminals with sealing provision (optional) Direct access key for Basic parameters, Power and Energy parameters My Favourite screen option for user selectable parameters in LCD series

Features: Range : 16A to 1250A,3P/4P,6 frame sizes Breaking Capacity : 25kA/36kA/50kA/70kA/100kA Confirms to IEC60947-2,EN60947-2,IS/IEC60947-2 Current Limiting Type MCCB Suitable for Isolation No Line Load Bias Microprocessor & Thermal-Magnetic based protection releases MCCBs for Special Applications : Motor backup protection DC Applications Capacitor Application Isolator Application 690V Application MCCBs for different Solutions : Total Discrimination Auto Source Transfer System Communication Releases (a) Thermal Magnetic Release Adjustable overload settings Adjustable short circuit settings True RMS sensing (b) Microprocessor Release MTX1.0 Release Overload Protection with inverse time delay Adjustable Trip Class Short Circuit Protection with Selectable time delay Instantaneous protection Provision of Thermal memory defeat Self powered True RMS sensing MTX2.0 Release Overload Protection with inverse time delay Adjustable trip class Short Circuit Protection with selectable time delay Instantaneous protection Inbuilt Earth fault and Neutral overload protection Provision of Thermal memory defeat Panel mounted OLED display for Current metering & Trip History Self powered True RMS sensing MTX3.0 Release Overload Protection with inverse time delay I2t, I4t, SI, LI, VI based overload curves Short Circuit Protection with selectable time delay Instantaneous protection with fine settings Advanced current and voltage based protection function Inbuilt Earth fault and Neutral overload protection Comprehensive current, power and energy metering Provision of Thermal memory defeat Panel mounted OLED display Communication through MODBUS RTU protocol True RMS sensing Self powered Internal Accessories : Auxiliary Contact Trip Alarm Contact Auxiliary + Trip Alarm Contact Shunt Release Under Voltage Release External Accessories : Direct & Extended Rotary Handle Spreader Terminals Stored Energy Electrical Operating Mechanism External Neutral CT Adaptor kit for Neutral CT Mechanical Interlock Kit Key lock for Interlocking Auto Source Transfer Controller Ground Fault Module Modules for MTX releases

L&T’s Supernova series motor protection circuit breaker (MPCB) integrates functions of a MCCB and thermal overload relay into a highly compact single unit. Equipped with a wide range current adjustment dial (with maximum/minimum ratio of 1.4 to 1.6), the MPCB easily adjusts to match the rated current of the motor, for optimum protection. MPCB provides protection against short circuit & overload. Also the compact size of the MPCB, including overload relay functions, enables a smaller installation area with less wiring space, for a reduction in panel size. Features Compactness High Breaking Capacity Short circuit protective coordination Reduction in wiring work Ecological design standards Standard accessories for all frames of MPCB Wide range of accessories which suits your requirements IP20 terminal cover prevents accidental contact to electrically charged part Accessories Auxiliary contact blocks Alarm contact blocks Auxiliary and alarm contact blocks Short-circuit alarm contact block Shunt trip devices Undervoltage trip devices External operating handles

MPR300 is a Microprocessor based LT Motor protection relay. The relay has got inbuilt CTs for motor sizes up to 50KW (i.e 88 A current) Protections offered: Thermal Overload Earth Fault Single Phasing Locked Rotor Under Current Features: LED’s for trip indication. Inbuilt CTs available 4 selectable trip time curves for thermal overload Test facility through front push button. Manual reset facility through front push button. With / Without fail safe mode Application: MPR 300 offers you greater security, operator safety through proper co-ordination in case of earth fault on motor feeder. MPR300 is used for protection of motors widely used in fans, pumps, crushers, mills, compressors, belt conveyors, centrifuges, mixers, ventilators, escalators, motorized valves etc.

An MD controller enables the user to program the threshold values of maximum demand and initiate actions i.e. alarm or cut off load when maximum demand / forecast demand / present demand crosses the threshold values. This helps the user to ensure that demand doesn’t exceed the sanctioned demand and avoid paying huge penalties. Parameters: V, A, F, kW, KVA, kVAr, kWh, kVAh, kVArh, PF, Runhr, Onhr, Intr, Phase angle, THD, Events, Neutral current, Max Demand (with RTC) with 4 relay outputs. Salient features Accuracy Class 1 as per IEC 62053-21 True RMS measurement Password Protection provision for security Phase wise Voltage & Current Wave Forms in LCD meter Site selectable for 3 Phase 4 wire, 3 Phase 3 wire, 1 phase Maximum demand measurement with Real time clock Time of Day (TOD) provision is available 6 Demand and 6 Energy option with MD occurance captured for each TOD 4 relay outputs available for proper load control Data logging provision is available Auto scrolling and freeze mode for constant single page viewing available Terminals with sealing provision (optional) Direct access key for Basic parameters, Power and Energy parameters

Remote control units play a crucial role on factory shop floor for operational safety and reliability. Reliable push buttons and indicators from our partners ESBEE, have been trusted by users across industries over the past four decades. The new range of Gen Next series products are compact in size and aesthetically appealing.16 mm Gen Next LED Indicators have sleek and integral design with special fire retardant plastic. They provide uniform and bright illumination with operating life of more than 0.1 million burning hours. Patented actuator is a ready to use solution for OEM and Panel builders that provides IP67 protectionwith shroud. It has isolated terminals for NO+NC applications. Illuminated actuators with LED have snap fit for ease in assembly with low power consumption of 0.6 W max. Push button stations provide round ergonomic enclosure with good aesthetics that occupies less space. They are robust, easy to grip, assemble and operate. It is available in standard configuration of actuators and LED indicators. The product range includes:New Gen Next Range of Products Ø16 mm & Ø22.5 mm Gen Next LED Indicators Gen Next Actuators & Contact Blocks Gen Next Push Button Station Gen Next entegral ctuators Panel mounted buzzer Standard Range of Products Standard Actuators & Contact Blocks Standard Push Button Stations Accessories

HRC Fuse Link range covers ratings from 2A to 800A. HRC Fuse-link range is available in 14x51 Cylindrical, DIN and BS type High breaking capacity: 80kA for Cylindrical & BS Type & 100kA for DIN Type The complete range conforms to IS 13703 (Part 2) / IEC 60269-2 standards Let-through energy value of L&T’s fuse is extremely low; it leads to optimal selectivity for the cable size & downstream protection devices. Low power loss also leaded to low running cost & minimum heating. Fuse blown indication is available through a red pop-up indicator Suitable fuse base & fuse pulling handle are also available

L&T Heavy Duty Capacitors are metallized polypropylene (MPP) capacitors. The capacitors come with stacked windings. The box capacitors are impregnated with a non-PCB biodegradable resin The cylindrical Capacitors are subjected to an extended period of drying after which the casing is filled with an inert gas to prevent corrosion of the winding elements and inner electrical contacts. Compact design ensures space saving. Heavy Duty capacitors have a long life of 150000 hours. Features: Range available: 3-30 kVAr (Cyl) & 5-50 kVAr (Box) Box (Resin-filled) & Cylindrical (Gas-filled) type construction MPP technology with Self-Healing & Over-pressure Disconnector Over current withstand capability  - 1.8 In Inrush current withstand capability  - 300 In Number of switching operations per year - 8000 Low operating loss (0.45 W/kVAr)L&T Heavy Duty Capacitors are metallized polypropylene (MPP) capacitors. The capacitors come with stacked windings. The box capacitors are impregnated with a non-PCB biodegradable resin The cylindrical Capacitors are subjected to an extended period of drying after which the casing is filled with an inert gas to prevent corrosion of the winding elements and inner electrical contacts. Compact design ensures space saving. Heavy Duty capacitors have a long life of 150000 hours. Features: Range available: 3-30 kVAr (Cyl) & 5-50 kVAr (Box) Box (Resin-filled) & Cylindrical (Gas-filled) type construction MPP technology with Self-Healing & Over-pressure Disconnector Over current withstand capability  - 1.8 In Inrush current withstand capability  - 300 In Number of switching operations per year - 8000 Low operating loss (0.45 W/kVAr) Application in commercial buildings with CFLs & SMPS, garment industries etc. Application in commercial buildings with CFLs & SMPS, garment industries etc.

MRP11Single Phase Reverse Power Relay SC14S1 phase High Impedance Earth Fault RelayApplication: Differential protection, REF protection MG30 / MG30-IGenerator Protection & Management RelayMG30: For Impedance Grounded (NGR / NGT) GeneratorsMG30-I: For Solidly Grounded Generators MD32-GGenerator Differential Relay