RAAJAS TECHNOLOGIES PVT. LTD. Udyog Nagar, Delhi

Introduction   RCCB works on balance current principle. The supply side of the current carrying conductors is passed through a torroid and act as the primary winding of Core Balanced Current Transformer. The secondary winding of this transformer is connected to an extremely sensitive electromagnetic trip relay which operates the tripping mechanism. In normal healthy circuit the vector sum of currents in all phases and neutral is equal to zero, if there is leakage in any of the phases flowing to earth the vector sum becomes not equal to zero. This residual current is enough to develop a resultant current flow in the secondary of Core Balanced Current Transformer which is applied to the sensitive relay resulting in actuating the tripping mechanism thereby tripping the supply. Thus RCCB provides earth leakage protection in electrical circuits and even provides protection due to electric shocks against accidental coming in contact with live parts / leaky equipments in an electrical circuit.   Salient Features of Shield RCCBs   Shield RCCBs are highly reliable, hi-tech state of the art product. These are composite unit RCCBs for single phase and three phase applications with current ensitivity of 30,100 & 300mA against all kind of faults due to earth leakage. Shield RCCBs ensure safely to human life and installations against fire and electric shocks. In short human life is extremely precious and Lawson RCCBs are the answer to safeguard the same.   Some Major Salient Features   • Provides protection against earth fault/ leakage and also fulfill the function of isolation. • Automatically measures and disconnect the circuit when earth fault/ leakage current occurs and exceeds the rated sensitivity. • High short-circuit current withstand capacity. • Dual termination possible for cable and comb type bus bar connection. • Having finger-touch safe connection terminals (IP 20 Protection). • Fire resistant plastic parts to withstand abnormal heating and strong impact. • Independent of power supply and line voltage. Also free from external voltage fluctuation. • Incorporates a filtering device for prevention of nuisance tripping due to transient voltage. • High current ratings upto 100A.

Plug & Socket   Finished sheet metal powder coated Plug & Socket Distribution Boards. Range available in 10 & 20A SPN and 20 & 30 A TPN. Adjustable 35 sq.mm din rail with connecting Links. Insulated neutral link in SPN Board. SPN & TPN boards with sockets having plastic cover. Connecting Links cross section SPN-2.5 sq.mm flexible cable, TPN-6.0 sq.mm flexible cable. Provision for both flush & wall mounting. Heavy duty screw type out going wire nozzle. Body in matt finish and cover in semi glossy finish. Paint 60 micron powder coating. Plug & Sockets internal material PBT / Porcelain. Plug & Sockets are also available as spares.   Single Pole Neutral Plug and Socket DB (Without MCB)   :: 10A SPN Plug & Socket DB :: 20A SPN Plug & Socket DB :: 20A SPN Plug & Socket (1P Out-outs)   Triple Pole Neutral Plug and Socket DB (Without MCB)   :: 20A TPN Plug & Socket DB :: 30A TPN Plug & Socket

Application   Shield Miniature Circuit Brackers are used in power distribution systems for protection against overload and short circuit fauls. The product is highly reliable, execellent in performance and has a high breacking capacity. The product has been designed for un-interrupted duty at 230/400V circuit for overload as well as short circuit protection. The Shield Series MCBs comply with IS/IEC 60898-1.   Housing   Shield MCBs are made up of engineered thermo plastic for self lubrication and critical performance. The housing and other moulded components are fire retardant having high melting point, low water absorption, high dielectric strength & anti tracking properties therefore enabling it to withstand high temperatures.   Operating Mechanism   Shield MCB circuit breakers are based on Current Limiting Principle. The protection is ensured by combining a temperature receptive mechanism (bimetal) and a current sensitive electromagnetic device. The thermal operation provides protection from normal overloads and the electro-magnetic device against large overloads and short circuits.   Superior Contact Mechanism   The mechanism comprises of fixed and moving contacts made up of high conductivity materials ensuring extended life span with anti-weld properties. These contacts having low contact resistance resulting in reduced voltage drop and low watt loss leads to energy savings.   Effective ARC Blowers   The arc under the influence of magnetic field is driven directly into the arc-chute where it is quickly extinguished and quenched   Wide Range   :: 1P+N, 2P, 3P, 3P+N, 4P :: Trip Type 'B' & 'C' Breacking capacity 10kA :: Ratings 6A to 63A :: IP-20 Degree of protection (Finger-touch safe) :: Trip free mechanism :: Mechanism with pad locking facity :: low Watt power loss :: Current limiting design-Class 3 :: ISI & CE Marked

Distribution of power in Residential & Commercial Buildings, Independent Villas, Hotels , Hospitals and of course Industries is ensured through composite system known as Distribution Boards. Distribution Boards are made up of metallic or engineering plastic single door or double door enclosures complete with DIN-Rail, Copper/Aluminum Bus Bars, Neutral Link and Earth Link. The enclosure known as Distribution Board is used for installing Isolators,RCCBs,MCBs etc. to make composite Power Distribution System complete with all these protective devices. For safety of installations and human beings it is imperative to properly select Distribution Boards. Shield has introduced a very exhaustive range of high quality Distribution Boards. Shield high quality Distribution Boards are manufactured using CRCA sheet steel Powder Coated with state-of-the-art powder coating technology making it highly corrosion resistant over a long period of time. Shield Distribution Boards blend very well with MCBs, RCCBs & Isolators to provide a very reliable and comprehensive protection system for power distribution. DB Range     Lawson offers complete range of Distribution Boards suitable for various applications as under • SPN Distribution Boards- Single & Double Door. • TPN Distribution Boards Horizontal- Single & Double Door. • Vertical TPN Distribution Boards with MCB as incomer. • Vertical TPN Distribution Boards with MCCB as incomer. • PPI Distribution Boards. • TPN Phase Selector Distribution Boards. • Seven Segment Distribution Boards. Single Pole Neutral Distribution Board Single Door