CQB2H-63 Series 63A Miniature Circuit Breaker

Product Overview

The CQB2H-63/CQB2HL-63 series miniature circuit breaker is designed by CHAC Electric for distribution protection in AC 50Hz (or 60Hz) systems with a rated voltage of 230/400V and a rated current up to 63A.With a rated short-circuit breaking capacity of up to 10000A, it provides reliable protection for electrical distribution lines against overload and short-circuit faults. The residual current operated circuit breaker also has overload and short circuit protection functions, which can be used to protect the line from overload and short circuit, and can also be used for infrequent line switching under normal circumstances. It is suitable for various places such as industry, commerce, high-rise buildings and residential buildings.The breaker also features isolation protection and can be used for infrequent connection, disconnection, and switching of circuits.It is widely applicable in terminal distribution scenarios across various industries such as construction, new energy, power, and infrastructure.

Overview and applications

Suitable for industrial, commercial, high-rise and civil residences circuit protection.

Features

Overload & short circuit protection

CQB2H-63

1.Positive isolation

2.High breaking capacity up to 10KA

3.Comprehensive range of accessories suitable for subsequent installation

CQB2H-63

1.Tripping curves B,C,D

2.Protect people against indirect contacts and additional protection against direct contacts.

3.Protect installations against fire hazard due to insulation faults

Technical data

CQB2H-63

Specifications
Rated voltage(V)	230V/400V(1P)、400V~(2P/3P/4P)
Rated current(A)	6、10、16、20、25、32、40、50、63
Number of poles	1P、2P、3P、4P
Rated short circuit breaking Icn(A)	10000
Mechanical & Electrical life	Mechanical≥20000,Electrical≥6000
Tripping characteristics	B、C、D
Tightening torque (N·m)	3.5
Pollution class	2
Protection degree	IP20
Overvoltage category	Ⅱ、Ⅲ
Tripping characteristics	Table1
Standards	IEC 60898-1、GB/T 10963.1
Certification	CCC

CQB2HL-63

Technical parameter project	Parameter Value
Rated voltage(V)	230V~(1P+N, 2P), 400V~(3P/3P+N/4P)
Rated current(A)	6, 10, 16, 20, 25, 32, 40, 50, 63
Rated residual operating current I△n(mA)	30, 50, 100, 300
Number of poles	1P+N, 2P, 3P, 3P+N, 4P
Rated short-circuit breaking capacity Icn(A)	10000
Mechanical and electrical life (times)	Electrical life ≥ 6000 times, mechanical life ≥ 20000 times
Tightening torque(N.m)	3.5
Pollution degree	Level 2
Protection level	IP20
Installation Category	Ⅱ、Ⅲ
Comply with standards	IEC 61009-1, GB/T 16917.1
Certification	CCC

Table1 Tripping characteristics (Reference temp.30℃)

Item	Tripping Curve	Test current In(A)	Initial Status	Time limit for tripping or non-tripping	Expected result	Remarks
a	B、C、D	1.13In	Cold	t≤1h	Non-tripping	Current smoothly rises to specified value within 5s
b	B、C、D	1.45In	Following item a test	t<1h	Tripping
c	B、C、D	2.55In	Cold	1s<t<60s(In≤32A) 1s<t<120s(In>32A)	Tripping
d	B	3In	Cold	t≤0.1s	Non-tripping	Switch on the power supply by closing the auxiliary switch
	C	5In
	D	10In
e	B	5In	Cold	t<0.1s	Tripping	Switch on the power supply by closing the auxiliary switch
	C	10In
	D	20In

Note: The term “cold” means that the test is carried out at a reference calibration temperature without load before the test.

Tripping curves

CQB2H-63

CQB2HL-63

Conductor requirements and cross section

Copper cross-section(mm²)	Rated current In(A)
1	In≤6
1.5	6<In≤13
2.5	13<In≤20
4	20<In≤25
6	25<In≤32
10	32<In≤50
16	50<In≤63

Dimensions(unit:mm)

CQB2H-63

CQB2HL-63

Order Specifications

1.When ordering circuit breakers, the followingpoints should be specified:

A) Product models, such as CQB2H-63/CQB2HL-63 ;

B) Poles of circuit breakers, such as 1P+N、2P、3P、3P+N、4P;

C)Types of instantaneous tripping,such as type C;

D) Rated current of circuit breakers, such as 20A;

E) Order quantity,such as 10pcs

2.Purchase order template

CQB2H-63 2P C/20A 10pcs