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SJK47LE-63 RCCB: Reliable Earth Leakage Protection - China Suppliers & Factory for 230V/400V AC Systems

The SJK47LE-63 Residual Current Circuit Breaker (RCCB) is engineered to deliver dependable earth leakage and overcurrent protection for AC systems operating at 230V/400V (50Hz). As a leading product from a reputable China manufacturer and supplier, this RCCB is available in versatile configurations including 1P, 2P, 3P, and 4P, with current ratings ranging from 6A to 63A. It features advanced C/D-type tripping characteristics and is capable of withstanding short-circuit currents of up to 6000A, making it an ideal choice for both residential and commercial applications. The SJK47LE-63 ensures robust safety against electrical faults while providing stable performance in environments ranging from 30°C to 35°C. This product complies with international standards and boasts a compact design without compromising on reliability, making it a top choice among suppliers in the electrical protection market

Product Details

Type Designation

1	Manufacturer Code
2	Design Serial Number
3	With Residual Current Protection (Earth Leakage Protection)
4	Rated Current Collection (32A, 63A)
5	Operational Current
6	Number of Poles

Product Display

SJK47LE-63 Residual Current Circuit Breaker (4)

SJK47LE-63 Residual Current Circuit Breaker (1)

SJK47LE-63 Residual Current Circuit Breaker (3)

SJK47LE-63 Residual Current Circuit Breaker (5)

Technical Parameters

Table 1

Maximum Frame-rated Current (A)	Number of Poles	With Neutral Pole	Rated Current In (A)	Rated Voltage Un (V)	Rated Residual Operating Current I△n (mA)	Rated Residual Non-operating Current I△no (mA)	Breaking Time at I△n (s)	Rated Residual Making & Breaking Capacity I△m (A)	Instantaneous Overcurrent Release Type


32	1	+N	6 10 16 20 25	230	30 50 100 300	15 25 50 150	<0.1	2000	C D
	2			230
	3			400
	3	+N		400
	4			400
63	1	+N	32 40 50 63	230
	2			230
	3			400
	3	+N		400
	4			400

◇Rated Short-Circuit Capacity (Icn), Service Short-Circuit Breaking Capacity (Ics).

Table 2

Model	Rated Current	Rated Short-Circuit Current (A)	Operating Short-Circuit Breaking Capacity (A)
SJK47LE	6~63A	4500	4500
SJK47LEH	6~63A	6000	6000

◇Overcurrent Protection Characteristics at 30°C~35°C (Ref. Table 3)

Table 3

No.	Rated Current of Release (A)	Initial State	Test Current	Specified Time	Expected Result	Notes

1	6~63	Cold State	1.13In	t≤1h In≤63A	No Tripping
2	6~63	Immediately after previous test post-test condition	1.45In	t<1h In≤63A	Tripping	Current Rises Steadily to Specified Value Within 5s
3	In≤32	Cold State	2.55In	1s<t<60s	Tripping
	In>32	Cold State	2.55In	1s<t<120s	Tripping
4	6~63	Cold State	5In 10In	t≤0.1s t<0.1s	No Tripping Tripping	C Type
			10In 14In	t≤0.1s t<0.1s	No Tripping Tripping	D Type

◇Wiring: For conductors ≤25mm² (Ref. Table 4) 2N·m — Connection method: Screw-clamp terminals, Torque 2N·m

Table 4

Rated Current In (A)	Nominal Cross-Sectional Area of Copper Conductor (mm²)
6	1
10	1.5
16、20	2.5
25	4
32	6
40、50	10
63	16

Outline and Installation Dimensions

Table 5

1P+N	2P	3P	3P+N	4P
18+36	36+36	54+54	54+72	72+72

Frequently Asked Questions

Q What is the difference between SJK47LE and SJK47LEH models?

The SJK47LE has a rated short-circuit breaking capacity (Icn) of 4500A, while the SJK47LEH is a higher-performance variant with a rated short-circuit breaking capacity of 6000A. Both cover a rated current range of 6~63A, making SJK47LEH more suitable for installations requiring higher fault current protection.

Q What residual current (earth leakage) sensitivity options are available?

The SJK47LE-63 series offers four rated residual operating current (I△n) options: 30mA, 50mA, 100mA, and 300mA. The corresponding non-operating currents (I△no) are 15mA, 25mA, 50mA, and 150mA respectively. The breaking time at I△n is less than 0.1 seconds for all options.

Q What pole configurations are available for this circuit breaker?

The SJK47LE-63 is available in multiple pole configurations: 1P+N (single pole with neutral), 2P, 3P, 3P+N, and 4P. For 32A frame models, the rated voltage is 230V for 1P+N and 2P, and 400V for 3P, 3P+N, and 4P configurations.

Q What are the C-type and D-type instantaneous overcurrent release characteristics?

C-type breakers trip instantaneously (t<0.1s) at currents above 10In and do not trip at 5In. D-type breakers trip instantaneously (t<0.1s) at currents above 14In and do not trip at 10In. D-type is preferred for loads with high inrush currents such as motors and transformers, while C-type suits general residential and commercial loads.

Q What copper conductor size should I use with a 63A rated current breaker?

For a 63A rated current, a copper conductor with a nominal cross-sectional area of 16mm² is recommended. The connection method uses screw-clamp terminals with a tightening torque of 2N·m. Always refer to Table 4 for the correct conductor sizing for other current ratings ranging from 6A to 63A.

Q How much DIN rail space does the SJK47LE-63 occupy?

The installation width depends on the pole configuration. For example, a 1P+N model occupies 18+36mm, a 2P model occupies 36+36mm, a 3P model occupies 54+54mm, a 3P+N model occupies 54+72mm, and a 4P model occupies 72+72mm. This allows accurate panel planning and DIN rail space allocation.