Vrix miniature circuit breakers have precisely formed moulded case & cover of flame retardant high strength thermo-plastic material having high melting point, Low water absorption, high dielectric strength and high temperature withstand. The switch mechanism is independent, manual and trip free, i.e. the breaker trips internally even if the operating knob is held on ON position. The contact mechanism comprises of fixed and moving contacts specially designed for reliability, long life and anti-weld properties. The Arc extinguishing device comprises of 13 plates arc chute. The arc under the influence of the magnetic field and arc guide is move into the arc tripping mechanism which is Thermal magnetic Type.

• Conforms to Latest Standard
  MCB conform to the latest standard IS/IEC 60898-1:2015.
• Energy Saving
  The low power loss as stipulated in the IS/IEC 60898-1:2015 has been taken care of in designing the MCB. The low power loss figures of MCB contributes significantly to the energy saving.
• Din Rail Mounting
  MCB's can be mounted on standard 35mm DIN Rail by snap action. No time wastage in installing and replacing the MCB.
• Shock Proof
  Finger and hand touch safe. Tested as per the test clause 9.6 of IS/IEC 60898-1:2015 protection against electric shock
• HousingThe housing of MCB is injection moulded from special grade PBT/Nylon as per international specifications. The housing and other moulded components are fire retardant, anti-tracking and non hygroscopic.
• Contacts
  Contacts are made of special Silver Tip in copper strip, silver plated, ensuring higher life and maximum safety against contact welding and erosion. These contacts have low contact resistance resulting in reduced watt loss.
• Operating Mechanism
  MCB have a quick make & break Trip Free Mechanism. In the event of an over current or short circuit the MCB automatically interrupts all poles even if the MCB toggle is held in ON position, the handle always indicates the correct contact position.
• Moderate Overload Condition
  Detection of moderate over load conditions is achieved by the use of a Bimetal Overload Relay, which deflects in response to the current passing through it. The Bimetal Relay moves against the trip bar releasing the trip mechanism.
• Perfect Connections
  The design of terminals makes the wiring easier. Combination box type terminals with combination head screws on both sides with deep serrations ensures sparkless and firm connections. The bi-connection facility simplifies connection in various application areas.

MCBs have been designed to minimize energy loss through unique contact configuration & reduction of hot spots.

Watt loss per pole in MCB is far lower than that specified in IEC 60898-1.

Testing

• Magnetic Tripping
  B Curve : The magnetic releases operated between 3 to 5 In .
  C Curve : The magnetic releases operated between 5 to 10 In
• Thermal Tripping
  2.55 x In

Type Test

• Temperature Rise Test
• Electrical & Mechanical Endurance Test.
• 28 Day Test
• Mechanical Shock Test
• Humidity Test
• H. V. Test
• Insulation Resistance Test
• Glow Wire Test
• Impact Test
• Finger Proof Test
• Time Current Characteristic Test
• Impulse Test