G. Kumar & Company

We offer air circuit breaker, which are incorporated with different specifications, dimension and functions. Our products are available in range from 630 Amps to 6300 Amps in compliance with IEC60947. In addition, our range is incorporated with protection functions separate from measurement functions that can be integrated in a general supervision system to optimize installation operation & maintenance. The features of our range includes

• Performances: 42kA to 150kA
• Versions: 3P/4P, fixed with drawable, manual & electrically operated
• Trip units: Micrologic microprocessor trip units that can be changed on site
• Equipped with digital LCD display
• Designed to protect power circuits & loads with alarms that can be programmed for remote indications
• Capable of measuring current, voltage, frequency, power & power quality optimize continuity of service and energy management.

The special applications of our products are:

• 1000 V AC DC
• Right hand neutral
• Industrial environments with high concentration of sulphur compounds and with corrosion protection
• Marine applications
• Source changeover.

 
Our products are available with the following optimized volumes:

• Master pact NW with single frame size up to 4000A
• Master pact NT with 70mm pole pitch means a three pole draw out circuit breaker can be installed in a switchboard section 400mm wide and 400mm deep
• No safety clearances required inside a switchboard.

 The innovation that can be done on our range includes:

• Filtered breaking, patented new design of arc chutes filters and cools the gases produced during fault, reducing effects perceptible from the outside
• Rear horizontal or vertical bus bar connections interchangeable by simply turning connectors by 90 degree
• Suitable for isolation.

Our range of distribution boards are available in single and double door configurations for up to 16 way, single phase plus neutral and three phase plus neutral with IP42 (sheet steel) and IP 65 (thermo Plastic) degree of protection. Further, our range can be customized to meet the exact requirement of our clients. These are available in the following range:

• 1 to 4 pole (metal enclosure)
• SPN DB's up to 4 to 16 way (single & double door)
• TPN DB's 4 to 14 way (single & double door)
• Vertical DB's 4 to 12 way
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• Pragma thermo plastic DB's from 2 to 4 rows We also provide MG protec range of sheet steel DB's and plug & socket DB's available in single and double door configurations.
  

 The MG protec are available in the following range:

• 1 to 4 pole metal enclosure up to 16 way
  
• Vertical 4 to 12 way • Sheet steel version DB's
• Plug & socket DB's 10/20 Amps SPN & 20/30 Amps TPN • Plastic enclosures 1 to 4 Pole.

Our range of miniature circuit breaker are low voltage final distribution products conforming to IEC 898 and IS 8828 – 1996. These are available with a host of accessories like auxiliary contact blocks, alarm contacts, shunt, under voltage and vigi modules for earth leakage protection. Some of the features of our range include:

• Current rating: 1A to 125A in 1/2/3/4 pole with neutral protection
• 10/15kA breaking capacity
• Tripping characteristics: B/C/D curve
• Finger touch proof protection
• Low power loss per pole
• Tunnel terminations for rigid cables In adition, we also offer MG Protec range of MCBs comply with IEC 898 - 1995 & IS 8828 - 1996 with a breaking capacity of 10kA for single pole and 15kA for multi pole configuration.

 These are available in the following range:

• 0.5A to 63A in 1/2/3/4 pole 220/415 V AC version
• 10kA breaking capacity
  
• Available in B curve and C curve
• DC version up to 63A in 2 pole version for 220 VDC application.

Merlin gerin compact NS range: 15 Amps to 3200 Amps, compliance with IEC60947 p12erformances: 36kA to 150kA Trip Units: Thermal Magnetic, Electronic & Microprocessor for protection of: - Distribution systems supplied by transformers - Distribution systems supplied by engine generator sets - Long cables in IT and TN systems - Motor Feeders - 1000V Distribution systems - 400Hz Distributuion systems - DC systems - OSN Trip Units for protection of overrated neutral - Additional earth leakage protection protects life & property against risks of faulty insulation in installation. Reflex Tripping: Thanks to reflex tripping, the energy developed by the short-circuit current is limited to very low values. Total Discrimination as a standard for optimum continuity of supply, Compact NS MCCBs provide a high level of discrimination in electrical installations. Should a fault occur, only the Circuit breaker immediately upstream from the fault will trip hence continuity of supply is guaranteed for the other feeders. Cascading for installation savings, The high limitation capacity of the short-circuit currents of a Compact allows co-ordination downstream from the latter of circuit breakers with limited breaking capacity. Source Changeover Systems to ensure a continuous supply of power when connected to Two Power Sources (A normal source and a replacement source). Communication Option makes it possible to control power consumption, simplify maintenance and improve operating comfort. Merlin Gerin Simpact Range: 10 Amps to 800 Amps, compliance with IS13947/IEC60947 Performances: 10kA to 50kA Features and Benefits: - front face and centralized overload adjustment. - High electrical and mechanical endurances. - Line load reversibility. - Extended rotary handle and door interlock with IP54 protection. - Push to trip facility. - Terminal suitable for Aluminium and Copper - Field fittable accessories - Clear ON/OFF/Trip indication.

We offer on load and offload changeover, which are available in different specifications as per the requirement of our clients. Some of the advantages of on load changeover are:

• On load changeover switches: 63A to 3150A
• On load switch fuse changeover: 63A to 630A
  
• On load bye pass switches: 63A to 630A
• Open execution & sheet steel execution
  
• Utilization category: AC23A (63A to 320A), AC23B (400A to 3150A)
• Conforms to IEC 947-3, IEC 664 & IS 13947 Part (I & III) 1993.

Our wide range of residual current circuit breaker / earth leakage circuit breaker conforming to IEC 1008 ensures human protection and protection against fire to property. These are incorporated with a filtering device preventing nuisance tripping and indicates the tripping of the device through a flag. In addition, we offer some accessories with our products, which includes auxiliary contact blocks, alarm contacts, shunt, under voltage and vigi modules for earth leakage protection. These products are available in the following range:

• 2 pole and 4 pole version
• 25A to 125A and sensitivities of 30mA to 500mA • Class AC, A and Si type
• Suitable for discrimination.

We offer switch disconnector fuse unit, which are designed and developed using latest technology. These are available with isolation functions, flexibility, ergonomic design and safety features. In addition, our products are incorporated with four breaks per pole with eight arcs and knife type self cleaning contacts. These ensures the superior performance of our products such as reduced arc energy concentration, high fused short circuit capacity and enhanced contact life. Some of the specifications of our products are:

• Range: 32 Amps to 630 Amps
• Available in TP/TPN/FP with DIN/BS type of fuse links
• Tested as per IEC 60947-3
• First switch disconnector fuse with IP20 protection cover as standard for the complete range
• First tropicalised switch disconnector fuse
• Fuse gear offer with discrimination
• Modular construction
• High endurance
• Compatible with DIN/BS type fuse links
• 800A with DIN/BS fuse carrier available.