Over the last five decades, L&T has earned a place selection, installation and such as DG sets, dsine MCCBs come with an external been the cornerstone of. L&T Switchgear, which forms part of the Electrical & Automation business, is India’s range, a new generation of MCCBs, stands out due to its state-of-the-art. L&T’s dsine range of MCCBs conform to the Low voltage directive 73/23/EEC as amended by directive 93/68/EEC. switch-disconnectors and fuse combination.

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Solutions for diverse application. Moulded Case Circuit Breakers Stability: Activated Up and Running, Uninterrupted In every industry, big or small, electrical power supply is critical. Even a few seconds of interruption or instability can result in huge financial losses, even loss cataloogue life. We have little or no control cwtalogue the nature or stability of power supply. The dsine range, a new generation of MCCBs, is a combination of state-of-the-art design and modern user-friendly features.

It also boasts a wide choice of protective releases, ergonomics, aesthetics and compactness. The range, designed to meet the changing needs of users after extensive analysis and user feedback, can satisfy the most demanding system requirements. Complemented by a wide array of dsnie, the dsine range offers comprehensive solutions to customer applications ensuring operational safety, reliability and versatility. In keeping with our leadership position in the Indian market, we also provide expert assistance in product selection, installation and effective after-sales service, across the country.

Over the years, we have developed our products to meet the ever-evolving demands catwlogue the market. The dsine range of MCCBs has been created keeping this in mind.

Built in accordance with the highest technical standards, dsine MCCBs assure reliable and maintenance-free operation. They have been designed to adapt to changes and overcome the challenges of your day-today operations.

Equipped with common accessories for the entire range, these MCCBs assure excellent savings by reducing your inventory costs. Our team is adept cataogue handling queries and complaints and is trained to offer you techno-commercial solutions… on time, every time.

dsine MCCB Catalogue

After all, forging long-term associations has always been the cornerstone of our business. Thankfully, dsine MCCBs, available in various current ranges 20A to Aare designed to efficiently handle such diversity. Our Thermal Magnetic as well as Microprocessorbased releases with various breaking capacities cater to multiple industrial needs.

Built with the latest technology, dsine MCCBs deliver optimum efficiency even in the most adverse environmental conditions. MCCBs with high breaking capacities cater to high voltage applications such as windmills and mines. They are compact so the panel builder can optimise panel size. They are thoroughly factory-tested with adequate quality controls in place.

Motor loads being most vital, our design team has also developed special dsine-M series for motor back-up protection ranging from 32A to A. Initiated Paving The Path to Progress 7 Building Sector Today, dsije energy management holds the key to growth and development in any sector.

Moreover, in most sectors, such as dzine building sector, energy management has become mandatory. Our Auto Source Transfer System has almost eliminated the risk of loss of data.

A range that has been designed and developed specially for DC applications such as UPS and battery chargers.


Choose from a wide range xsine DC voltages up dxine V and DC breaking capacities up to 36kA available as per various application requirements. They are also available for lower DC voltages such as battery chargers.

Our SD is designed to withstand high currents without compromising on Service Performance. Ensured Soaring High with Consistency 11 Infrastructure Monitoring and controlling electrical installations at places like airports, hospitals etc. As power supply is critical for airports and hospitals, our dsine MCCBs with ASTS offer changeovers in less than milliseconds coupled with a variety of other protections in case of under voltage, phase unbalance, etc.

In India, we have the largest stockist network with over stockists. To find the ideal dsine MCCB suitable for your requirements, turn the page. Also recognised for its ergonomics, aesthetics and compactness, it belongs to a new generation of MCCBs. Specially designed and developed for extreme tropical conditions, it promises reliable performance at high ambient and humid environment.

Because we understand our customers’ requirements and demands, our contemporary range of MCCBs never fall short of ensuring complete customer satisfaction. Moreover, complemented by a host of accessories, the dsine range delivers comprehensive solutions to customer applications ensuring operational safety, reliability and versatility.

L&T DSINE DN3-400N 160-400A 50kA 4 Pole MCCB (µP)

Accredited laboratories have the responsibility of satisfying the criteria of laboratory accreditation at all times, which are verified during Surveillance and Reassessment visits by NABL.

Further the accredited laboratories should prove their technical competence by satisfactory participation in recognized Proficiency Testing Programmes. Generally, this conformity to the applicable directives is done through self-declaration and is required on products in the countries of the European Economic Area EEA to facilitate trade among the member countries.

The manufacturer or their authorized representative established in the EEA is responsible for affixing the CE marking to their product.

The CE marking provides a means for a manufacturer to demonstrate that a product complies with a common set of laws required by all countries in the EEA to allow free movement of trade within the EEA countries. A manufacturer utilizing a CB test certificate issued by one of dsien accepted National Certification Bodies NCBs can obtain certification marks of the latter, within their scope of adherence, in the countries where the accepted NCBs are located.

Rated ultimate short-circuit breaking capacity Ics: The M version MCCBs in dsine range are developed specially to give short circuit protection for all types of motors. Selection of MCCB using our type 2 charts give reliable performance of the motors. These MCCBs can be used for following applications for isolation purpose: As per the earthing of the system, we recommend following connections for breaking the fault currents.

Buy L&T DSINE DNN A 50kA 4 Pole MCCB (µP) at Best Price in India

Earthed system Any one polarity is earthed Earthed system Midpoint of the system is earthed Insulated system No earthing No. Inbuilt current metering does not require separate CTs hence maintenance is easy. O-LEDs showing current metering has got faster response time and also consumes less power, hence saves energy. It has better contrast ratio as well. Earth fault protection limits expenses by preventing damage to other equipment. This function also allows an optimization of cables or bus bar protection in case of low amplitude repetitive faults.

Advance tripping increases the overall life and eliminates the production downtime incase of severe faults. These switches give you quicker option to precisely change selection, offering high life. For wiring diagram, please refer page no. This would enable monitoring energy at individual feeder level and thus help in implementing effective energy management practices in the plant.


Moreover, using communication module, different parameters reading can be viewed on display module. This function detects the phase reversal of current from the set sequence. One can set the direction of power flow in a system from source to load and in case the direction of power flow reverses, the reverse power protection can be activated to trip the system. This is especially important in a DG set or in a ring mains system. The metering values can be read remotely.

The settings configuration on the other hand can both be read and changed remotely. Highly reliable data yet extremely simple looping reduces operational headaches and enhances remote accessibility.

These recorded values can be viewed from display unit as well as PC. These solutions can give you optimum energy management.

It has been developed to control and supervise the automatic or manual transfer of a utility load from a principal power supply source to a stand-by and vice-versa. It includes all the necessary features to supervise and control power supply sources, composed by energy distribution systems or generating sets, and the relative transfer equipment, such as contactors, motorized moulded case circuit breakers and air circuit breakers.

Some of the salient features of the controller are as follows: There is no need to open main cover and no live parts are accessed during installation. The internal accessories are housed in insulated casings to ensure first level of insulation. When the front cover is opened for the fixing of internal accessories, the MCCB is totally insulated ensuring the double insulation. With the under-voltage release de-energized, it is not possible to close the MCCB.

UV release can also be used for interlocking schemes for DG synchronization, paralleling of transformers etc also. Two MCCBs can be interlocked using base plate mechanism, in side-by-side configuration.

Mechanical Interlocking using Key Locks: For mechanical interlocking through extended rotary operating mechanism, a panel mounted key lock is available. The selection of the key lock as per the table: Metering module collects the data from the release and sends the same to the Display module.

We can also view last trip records. It is suitable for the MTX3. It is available with DIN rail mounting facility.

Its operating temperature is C to 70 C. It has one navigation key, a select button a an exit button. These modules are to be used with MCCBs for earth fault protection.

The principle of operation is based on detection of the residual current in the system. External CTs are to be used for GF Curves are Ir based till overload zone. So gain the advantage and go the extra mile with: Courses applicable to all switchgear brands?

Blend of theory and practical experience? The typical training programmes cover: Please contact any of the training centres for participation and detailed training programme schedule.

Sarojininagar, Lucknow – Tel: Station Ashram Road Ahmedabad Tel: Box Bengaluru Tel: