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PV combiner configuration family
AC Distribution and Protection Boxes
AC distribution, RCD and contactor arrangements for downstream PV interfaces. This family groups 5 reviewed configurations by voltage, input/output topology and protection architecture.
Configuration matrix
Compare the electrical boundary before selecting a model.
Values shown are source-backed configuration identifiers. Final component selections, ratings, drawings and documents are confirmed against the project specification.
AC distribution box
- Voltage
- 220/400V AC
- Input / output
- - / -
- Arrangement
- AC SPD + control
Type B RCD box
- Voltage
- 400V AC
- Input / output
- 1 / 1
- Arrangement
- Type B RCD + MCB
Type B RCD box
- Voltage
- 400V AC
- Input / output
- 1 / 3
- Arrangement
- Type B RCD + MCB
AC contactor box
- Voltage
- 400V AC
- Input / output
- 1 / 1
- Arrangement
- MCB + contactor + SPD
AC contactor box
- Voltage
- 400V AC
- Input / output
- 1 / 3
- Arrangement
- MCB + contactor
Technical reading
Continue with the engineering question behind the configuration.
How to Choose a Home Distribution Box: An Engineer's Guide
A buyer's guide to selecting a home distribution box by circuit count, main-switch capacity, protection devices, enclosure material, IP rating and future loads.
Read Insight →Low-voltage systems / Engineering guideACDB Full Form in Electrical: Understanding the AC Distribution Box
ACDB stands for AC Distribution Box — an enclosed low-voltage assembly that receives alternating current from one supply point and distributes it to several protected outgoing circuits. In a solar plant it sits on the inverter output between the inve
Read Insight →Residual-current protection / FundamentalsELCB vs RCCB: Difference, Working Principle & Selection Guide
Understand the difference between older voltage-operated ELCBs and current-operated RCCBs, then match residual-current type and sensitivity to the load.
Read Insight →Protection / Selection guideHow to Choose the Right RCCB: The Definitive Selection Guide
Choose the right RCCB: Type AC, A, F and B, 30-300 mA sensitivity, In sizing, 2P vs 4P, TT and TN systems, plus IEC 61008-1 procurement checks. (143 characters)
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