Small Automatic Transfer Switch Chint NB1-63H 1A~63A

Chint NB1-63H small automatic transfer switch is a protective device widely used in low voltage distribution system to automatically cut off power when circuit overload, short circuit and other faults occur, so as to protect circuit and equipment.
Automatic switches NB1-63H have the following characteristics:
Nominal voltage (Ue):
AC 230V/400V (1P): For single pole (1P) automatic transfer switches, the rated voltage can be 230V or 400V, depending on the specific needs of the application.
AC 400V (2P, 3P, 4P): For two-pole (2P), three-pole (3P) and four-pole (4P) circuit breakers, the rated voltage is 400V.
Nominal current (in):
Automatic transfer switches provide a maximum continuous operating current range from 1A to 63A and cover the needs of various application scenarios.
Nominal insulation voltage (Ui):
500V means that the automatic transfer switches are designed and manufactured to withstand a maximum voltage of 500V in their insulation systems to ensure the safety of people and equipment during normal use and fault conditions.
Nominal impact-resistant voltage (Uimp):
4 kV is the voltage level at which the automatic transfer switch can withstand the insulation system under momentary overvoltage (such as lightning strike or overvoltage operation) without breakdown.
Polar number:
Four options are provided: 1P (single pole), 2P (two pole), 3P (three pole) and 4P (four pole) to meet the needs of different circuit structures.
Instant shutdown type:
Type B: Used for pure resistance loads such as incandescent lamps.
Type C: Suitable for general electronic equipment such as computers, TVs, etc.
Type D: Suitable for loads with high starting current, such as electric motors.
Protection class (IP20):
Specify the dustproof and waterproof level of the automatic switch housing. IP20 means that the device can prevent the penetration of solid objects with a diameter greater than 12.5 mm, but does not have waterproofing.
Rated short-circuit current (A) and working short-circuit current (A):
Rated short-circuit current 10000A: The maximum value of current that the automatic transfer switch can safely disconnect under short-circuit conditions.
Short-circuit current starting 7500A: It may refer to the maximum short-circuit current that the automatic transfer switch can withstand under certain conditions such as temperature rise limitation.
Electrical and mechanical life:
Electrical life 10000 times: The maximum number of switching operations of automatic switches under rated conditions.
Mechanical life 20,000 times: The maximum number of operations that the mechanical components of the automatic switch (such as contact) can withstand without replacement.
Taken together, these parameters determine the performance characteristics and application range of Chint NB1-63H small automatic transfer switches, providing users with an important basis for selection and use.