JL9B-63S Miniature Circuit Breaker (AC MCB)

The JL9B-63S miniature circuit breaker is designed for overcurrent protection in lighting and power distribution systems.

Suitable for AC 50/60Hz circuits, up to 415V and 63A.
Provides isolation, overload, and short-circuit protection, and can be used for infrequent line switching under normal conditions.
Ideal for industrial, commercial, high-rise, and residential applications.
Complies with IEC/EN 60847-2 standards for safe and reliable operation.

Reliable protection for every electrical circuit.

Product Description

Model

Rated current (In) (A)

Frame current

Number of poles

Rated breaking capacity

Tripping Characteristics

JL9B-63S

1

2

4

6

10

16

20

25

32

40

50

63

1P

2P

3P

4P

4KA

B

C

D

Technical Data

Type	Standard		IEC/EN 60847-2
Electrical features	Function		Overload, Short circuit, Isolation
	Number of poles	p	1P	2P	3P	4P
	Rated current (In) (A)	A	6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
	Rated voltage Ue	V	400/415V
	Frame level	A	63A
	Insulation voltage Ui	V	500
	Rated frequency	Hz	50/60
	Rated breaking capacity	A	4500
	Rated impulse withstand voltage (1.2/50) Uimp	V	6000
	Dielectric test voltage at ind. Freq. for 1min	kV	2
	Pollution degree		2
	Trip type		Thermal magnetic release
	Thermal magnetic tripping characteristics		B, C, D
	Accessories
Mechanical features	Mechanical life	T	10000
	Electrical life	T	20000
	Protection degree		IP40
	Reference temperature for setting of thermal elements	℃	30
	Ambient temperature (with daily average≤35℃)	℃	-5~+40
	Storage temperature	℃	-25~+70
	Terminal connection type		Cable/Pin-type busbar
Installation	Terminal size top/bottom for cable	mm²	35
		AWG	18/2
	Terminal size top/bottom for busbar	mm²	35
		AWG	18/2
	Tightening torque	*Nm**	2
		In-lbs	18
	Mounting		On DIN rail EN 60715(35mm) by means of fast clip device
	Connection		From top and bottom