Product Introduction

AC residual current operated circuit breaker,The KNS3LE-63BO series residual current operated circuit breakers are suitable for AC 50Hz circuits with a rated voltage of 230/400V and a rated current up to 63A;

• Provide indirect contact protection for personnel.

• Prevent fire hazards caused by ground fault currents due to equipment insulation damage;

• Overload and short-circuit protection for lines and power supply equipment;

• For infrequent connection, disconnection, and switching of lines under normal conditions. This series of products features high breaking capacity, strong applicability, small size, light weight, attractive appearance, and ease of use. Suitable for various locations, such as shops, shopping malls, hotels, guesthouses, factories, and other large venues.

product-1460-531

Technical Parameters

Model	KNS3LE-63BO
Rated current In	6,10,16,20,25,32,40,50,63
Rated breaking capacity Icu	4.5kA
Mechanical life	15,000 times
Electrical life	10000 times
Operating frequency	120 times/hour
Protection level	IP20
Installation method	Guide rail embedded
Wiring method	Terminal blocks with clamps
Wiring capability	Connections are permitted with wires smaller than 16mm² (when Inm=63A).
Tightening torque	2N·m(Inm=63A时)
Breaking time I△＝I△n	≤0.1s
Rated insulation voltage	500V
Rated impulse withstand voltage Uimp(1.2/50)	4kV
Dielectric test voltage	2kA (50/60Hz, 1 minute)
Rated remaining connecting and disconnecting capacity I△m	2000A
Rated residual operating current IΔn	0.01A; 0.03A; 0.05A; 0.1A
Rated residual non-operating current I△no	0.015A; 0.025A; 0.05A

Corresponding Copper Conductor Cross-sectional Area

Rated current In (A)	≤6	10	16,20	25	32	40,50	63
Conductor cross-sectional area (mm²)	1	1.5	2.5	4	6	10	16

Appearance and Installation Dimensions

product-1460-631

Series	A(max)	B(max)	C(max)	D(max)	E(max)	F(max)	H(max)
1P+N	45.6mm	36mm	85mm	37mm	5.5±0.2mm	45mm	73mm
2P
3P	45.6mm	70.8±0.4mm	93±0.5mm	37mm	5.5±0.2mm	45mm	73±0.5mm
3P+N
4P		88.5±0.5mm

product-1460-283

Structural Features

AC residual current operated circuit breaker,This series of circuit breakers consists of a plastic housing, overcurrent trip unit, operating mechanism, contacts, and arc extinguishing system. The housing is made of high-strength, highly flame-retardant plastic.

Multi-pole circuit breakers are assembled from multiple single poles. The trip units are connected by a linkage rod, and the handle is integrated with a linkage cover, ensuring consistency in switching operations at each stage.