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Circuit Breakers
Miniature Circuit Breakers
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Newtech MCB's are among the best available
designed with proven, trusted and reliable German Technology to provide
enhanced operating safety, Installations for domestic, commercial and
industrial applications. Some of the salient features of these MCB's are as
below.
» Finger Protection
The New Tech MCB's are finger protected to IP 20 as per IS 8828: 1996 and
IEC 898 hence the live current carrying parts cannot be touched
accidentally.
» Magnetic Protection
When overload values exceed the values specified for different
characteristic curves i.e. B & C a strong Magnetic field is induced
which results into instantaneous tripping of MCB.
» Effective Quenching
Arc produced of contacts is rapidly pushed Magnetically into a 12 plates
arc chamber where it is broken down effectively & cooled.
» Trip Free Mechanism
Trip free Mechanism ensure tripping of MCB even if the knob is kept in 'ON'
position.
» Special Silver Alloy Contacts
The contacts are made out of special silver alloy inlaid strips which gives
low contact resistance resulting in low voltage drop & hence very low
power consumption and temperature rise. These contacts have very excellent
anti weld properties.
» Thermal Protection
Small overloads are detected by fine calibrated Bimetal which deflects if
the current is greater than the rated current and hence tripping the MCB.
» Dual Termination
The incoming terminals are designed for termination of Busbar as well as
cable individually or simultaneously. Terminals are suitable for Cables upto
25mm².
Housing
The housing of Newtech 10KA MCB is injection moulded
from Special grade 30% GF, fire retardant UL94, V-O Polyester which is
anti-tracking and non-Hygroscopic and can withstand high temperature.
Current Limiting Design
The current limiting design does not allow fault
current to reach its peak |k/2 & cut it at a very low value (ld). This
keeps let through energy very low which enables MCB to clear short circuit
breaking capacity of 10KA effectively.