How to select BYSON AC MCB?

Choosing the right BYSON AC MCB (Miniature Circuit Breaker) requires consideration of parameters, application requirements, safety standards, and brand-specific features. Below is a step-by-step guide to help you make the best selection.

Electrical Parameters:

1. Rated Current:

   • Based on the circuit load: 1A, 2A, 3A, 4A, 5A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A.

   • Should be slighterly higher than the needed operating current.

2. Poles Number:

   • 1P
   • 1P+N
   • 2P
   • 3P
   • 4P

3. Breaking Capacity:

   • 3kA
   • 4.5kA
   • 6kA
   • 10kA
   • 15kA

Verify Compliance & Certifications:

Ensure the BYSON AC MCB meets:

• IEC 60898-1, 60947-2 (MCB standard).

• Regional certifications: CE, CCC

Comparison of Different BYSON AC MCB Models:

Model	BY01-63	BY02-63	BY03-63	BY03H-63
Image
Rated Current	1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
Poles	1P, 2P, 3P, 4P
Rated Voltage	1P: 240/415V～; 2P, 3P, 4P: 415V～
Rated Insulation Voltage	400V
Rated Frequency	50/60Hz
Breaking Capacity	3kA	3kA	4.5kA	6kA
Rated Impulse Withstand Voltage	4kV
Tripping Curve	B, C, D

Model	BY04-63	BY05-32	BY05H-40	BY06-125	BY06H-125
Image
Rated Current	1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A	3A, 6A, 10A, 16A, 20A, 25A, 32A	1A, 2A, 3A, 4A, 5A, 6A, 10A, 16A, 20A, 25A, 32A, 40A	50A, 63A, 80A, 100A, 125A	63A, 80A, 100A, 125A
Poles	1P, 2P, 3P, 4P	1P+N	1P+N	1P, 2P, 3P, 4P	1P, 2P, 3P, 4P
Rated Voltage	1P: 240/415V～; 2P, 3P, 4P: 415V～	1P+N: 240V～	1P+N: 230V～	1P: 240/415V～; 2P, 3P, 4P: 415V～	1P: 240/415V～; 2P, 3P, 4P: 415V～
Rated Insulation Voltage	400V	500V	500V	400V	1000V
Rated Frequency	50/60Hz	50Hz	50/60Hz	50/60Hz	50/60Hz
Breaking Capacity	10kA(In≤32A), 6kA(In>32A; 10kA can be customized)	3kA	6kA	6kA	15kA(In≤100A), 10kA(In=125A)
Rated Impulse Withstand Voltage	4kV	4kV	4kV	4kV	6kV
Tripping Curve	B, C, D	B, C	B, C	C, D	C, D