China SJK47-63 Miniature Circuit Breaker MCB DPN Manufacturers, Manufacturer
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China SJK47-63 Miniature Circuit Breaker MCB DPN Manufacturers, Manufacturer

China SJK47-63 Miniature Circuit Breaker MCB DPN Manufacturers, Manufacturer

SJK47-63 Miniature Circuit Breaker (MCB) is a premium-grade circuit protection device, with the SJK47-63 MCB featuring ultra-high breaking capacity and flame-retardant housing. This SJK47-63 Miniature Circuit Breaker is specifically engineered for 220/380V AC systems (50/60Hz, up to 63A), providing reliable overload and short-circuit protection. The SJK47-63 MCB's robust construction meets GB10963.1, IEC60898-1 and CCC standards, making this miniature circuit breaker ideal for residential, commercial and industrial applications. With its compact design, the SJK47-63 Miniature Circuit Breaker ensures easy installation while delivering superior performance. Choose the SJK47-63 MCB for guaranteed safety and durability in all electrical distribution systems.

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Product Description

Type Designation

SJK47-63-MCCB-Circuit-Breaker-5
1 Circuit Breaker Model Number
2 Design Code
3 Frame Size Rated Current
4 Number of Poles (Arabic numerals, Neutral pole marked as N)
5 Instantaneous Release Type (C, D)
6 Rated Current Value

Product Display

SJK47-63-MCCB-Circuit-Breaker-(1)
SJK47-63-MCCB-Circuit-Breaker-(2)
SJK47-63-MCCB-Circuit-Breaker-(3)
SJK47-63-MCCB-Circuit-Breaker-(4)

Technical Parameters

Mechanical and electrical lifespan (Ref. Table 2) TABLE 2
Type Times Operating frequency (t/h) Rated current (A)
Electrical lifespan 4000 240 6~32
120 40~63
Mechanical life 20000 240 6~63
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 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 3In / 5In t≤0.1s / t<0.1s No Tripping / Tripping B Type
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), Connection method: Screw-clamp terminals, Torque 2N·m Table 4
Rated Current In (A) Nominal Cross-Sectional Area of Copper Conductor (mm²)
61
101.5
16, 202.5
254
326
40, 5010
6316

Trip Characteristic Curve

SJK47-63-4
◆ Power Consumption per Pole (Ref. Table 5) Table 5
Rated Current In (A) Maximum Power Consumption per Pole (W)
6~102
16~323.5
40~635
Ambient Temperature (°C) -30-20-100102030405060
Current Correction Factor 1.301.251.201.151.101.051.000.950.900.85

Outline and Installation Dimensions

Left Picture: Installation Dimensions | Right Picture: TH35-7.5 Mounting Rail Dimensions

SJK47-63-7

Frequently Asked Questions (FAQ)

What is the rated current range available for this circuit breaker series?
This circuit breaker series accommodates a rated current range from 6A up to 63A, tailored for varying electrical loads.
What instantaneous release curve types are supported?
It supports standard B, C, and D type instantaneous trip characteristics to adapt to different operational protection requirements.
What type of mounting rail is standard for installation?
The unit is engineered for easy installation onto a standard TH35-7.5 DIN mounting rail.
What is the recommended wiring torque and max conductor cross-section?
The product uses screw-clamp terminals with a recommended torque of 2 N·m, supporting copper conductors up to 25 mm² (specifically 16 mm² for 63A).
How does ambient temperature influence the current rating?
Standard characteristics are calculated between 30°C and 35°C; operational environments varying from -30°C to +60°C will need correction factors applied ranging from 1.30 down to 0.85.
What are the mechanical and electrical endurance ratings?
The breaker provides a mechanical endurance of up to 20,000 operations and an electrical endurance of up to 4,000 operations.

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