MCB or mccb main breaker three phase distribution board Main incomer: MCB or mccb Main incoming current: 125Amp Fully shrouded busbar/Pan assembly The distribution board divides the electrical power feed into subsidiary circuits, while providing a protective circuit breaker for each circuit in a common enclosure. What breaker can adapt for this board? Default: 1. Etechin manufactured breakers Others: 2. Schneider, ABB, GE,Simens, Legrand, Hager, China, Himel, Ls, Mitsubishi, Hitachi, Eletra brand made circuit breaker. Please advise us the breaker you will use in the distribution board In the worldwide, despite the adoption of a standard DIN rail for mounting and a standard cut-out shape, as the positions of the busbar/ terminal connections are not standardized.1. Pan assembly KEMA approved 2. Galvanized 1.2mm sheet 3 .Main switch: MCB,ISOLATOR,ELCB,MCCB up to 250A 4 .Outgoing: upto 72poles way MCB 5. Plastic Lock/ Metal Lock 6. Surface/flush type 7. Adjusted mounting plate 8. Powder coating Ral7035 texture 9. IP42 for Metal Enclosure 10. IEC61439-11. Thickness and kind of steel: 2. Dimension of the board 3. Structure of the board

Standard	IEC61439-1&2                                                                                                           Designed to be operated by an ordinary person
Pan assembly rating(A)	125,200,250A
No.of phase	1,2,3
Voltage Rating(V)	110-415
Rated Insulation voltage(V)Ui	690V
Mounting type	Flush/Surface
No. of ways(3phase)	4,6,8,10,12,14,16,18,20,22,24
Ingress protection(IP)	IP40
Enclosure material	Electro galvanized steel
Steel sheet thickness(mm)	1&1.2mm
Surface finishing	Powder coated with electrostatic Epoxy polyester(RAL7035)
Coating thickness	70-90 microns
Main incomer breaker	MCCB or MCB, ELCB+ISOLATOR,
Branch breaker	1,2,3P din-rail type 18mm width MCB
Neutral terminal Capacity	Offer 10mm diameter lug hole
Earth  terminal Capacity	Offer 10mm diameter lug hole
Ambient Temperature(℃)	30,50

The above dimension are for surface mounting type. Flush mounting type H and W add 20mm. Due to same brand incomer in big size, the final dimension should accord customer's breaker to revise if need. OEM/ ODM and customization are welcome.The below diagram indicated the MCCB main three phase distribution board connection an extension board on the top.