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OEM SJK47-63 Miniature Circuit Breaker MCB DPN Manufacturers, Companies
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OEM SJK47-63 Miniature Circuit Breaker MCB DPN Manufacturers, Companies

OEM SJK47-63 Miniature Circuit Breaker MCB DPN Manufacturers, Companies

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
Type Designation Chart
1Circuit Breaker Model Number
2Design Code
3Frame Size Rated Current
4Number of Poles (Arabic numerals, Neutral pole marked as N)
5Instantaneous Release Type (C, D)
6Rated Current Value
Product Display
Product Display 1 Product Display 2 Product Display 3 Product Display 4
Technical Parameters
Mechanical and electrical lifespan (Ref. Table 2)
TimesOperating frequency (t/h)Rated current (A)
Electrical lifespan40002406~32
12040~63
Mechanical life200002406~63
Overcurrent Protection Characteristics at 30°C~35°C (Ref. Table 3)
No.Rated Current (A)Initial StateTest CurrentSpecified TimeExpected ResultNotes
16~63Cold State1.13Int≤1h (In≤63A)No Tripping
26~63After test 11.45lnt<1h (In≤63A)TrippingCurrent Rises Steadily
3In≤32 / In>32Cold State2.55ln1sTripping
46~63Cold State3In / 5In / 10Int≤0.1s / t<0.1sNo Tripping / TrippingB / C / D Type
Wiring and Torque (Ref. 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
Trip Characteristic Curve
Power Consumption per PoleTabel 5
Rated Current In (A)Max Power Consumption per Pole (W)
6~102
16~323.5
40~635
Ambient Temperature (°C)-30-20-100102030405060
Current Correction Factor1.301.251.201.151.101.051.000.950.900.85
Outline and Installation Dimensions

Left Picture: Installation Dimensions

Right Picture: TH35-7.5 Mounting Rail Dimensions

Installation Dimensions
Frequently Asked Questions
What are the different instantaneous release types available?
The circuit breakers are available in Type C and Type D instantaneous release types to suit various load protection requirements.
What is the mechanical and electrical lifespan of the breaker?
The unit features a high mechanical lifespan of up to 20,000 operations and an electrical lifespan of 4,000 operations.
How does ambient temperature affect the rated current?
Current correction factors apply based on temperature; for example, at 60°C the factor is 0.85, while at -30°C it increases to 1.30.
What is the recommended wiring torque for the terminals?
The screw-clamp terminals should be tightened with a torque of 2N·m for secure and safe electrical connection.
What type of mounting rail is compatible with this device?
This circuit breaker is designed for standard installation on a TH35-7.5 mounting rail.
What is the maximum cross-sectional area for copper conductors?
The wiring terminals support copper conductors up to a maximum nominal cross-sectional area of 16mm² for the 63A model.

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