NB1-63□ small circuit breaker

Function and use

NB1-63 □ small circuit breaker is suitable for lines with AC 50Hz rated voltage 230/400V and rated current up to 63A. It serves as overload and short-circuit protection. It can be used for infrequent switching of lines under normal circumstances, and can also be used as an isolating switch for disconnecting lines for line and equipment maintenance. Circuit breakers are suitable for various places such as industrial, commercial, high-rise and residential buildings. Comply with standards: GB/T 10963.1, IEC 60898-1, and obtain CCC, CE, SEMKO and other certifications.

Detailed parameters

IP20

Parameter classification	Parameter items	Parameter value
Technical parameters	Rated voltage (Ue)	AC 230V/400V(IP), AC 400V(2P, 3P, 4P)
	Rated current (In)	1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
	Rated insulation voltage (Ui)	500V
	Rated impulse withstand voltage (Uimp)	4kV
	Number of poles	1P, 2P, 3P, 4P
	New tripping types	Type B, Type C, Type D
	Room buckle characteristics	See Figure 4, Figure 2, Figure 3
	Temperature compensation coefficient	See Table 7
	Different Positive coefficient of ambient temperature	See Table 8
	Mechanical and electrical lifespan	See Table 3
	Rated short-circuit breaking capacity (icn)	See Table 2
	Rated limit short-circuit current ( Icu)	3
	Connecting wires	See Table 5
	Operating torque	2.0N·m
	Outline and installation dimensions	See Figure 4
	Pollution level	Level 2
	Protection level
	Installation Category	II, III Category
Main Technical Parameters Number	Rated short circuit breaking capacity (icn)
	Model number	NB1-63, NB1-63H
	Rated current (A)	1-63, 1-63
	Number of poles	1, 1
	Rated voltage (V)	230/400, 230/400
	Rated short-circuit current (A)	6000, 10000
	Operating short-circuit current (A)	6000, 7500
Mechanical and electrical life	Category
	Number of times (times)	10000, 200000
	Operating frequency (times/hour)	240, 240
	Rated current (A)	1-32, 1-63
	Expected results	No tripping, Trip
	Remarks	The current rises steadily to the specified value within 5s
Overcurrent protection characteristics (reference temperature 30℃)	Serial number	a, b, c, d
	Model	B, C, D, B, C, D
	Rated current of tripper (A)	1-63, 1-63, 1-63, 1-63
	Initial state	Cold state, cold state, cold state, cold state
	Test current	1.13In, 1.45In, 2.55In, 3In, 5In, 10In, 14In
	Specified time	t≤1h, t≤1h, 1s<60s, 1s<120s, t≤0.1s, t≤0.1s, t≤0.1s
	Expected results	No tripping, tripping, tripping, tripping, no tripping, no tripping, no tripping
Tripping characteristic curve	Figure 1 Type B
	Figure 2 Type C
	Figure 3 Type D