Total Box DC/AC Single-phase Panel TBMF 2/2 600V
Total Box TBMF 2/2 600V: a combined enclosure integrating both DC-side and AC-side protection of a single-phase PV system with two strings up to 600 Vdc. Includes 600V load-break isolator, Type 2 SPD, 1000V fuse holder with 16/20A gPV fuses and a single-phase RCBO 300mA Class A. IP65 enclosure, 36 DIN modules, compliant with CEI 0-21, CEI EN 61439 and CEI 64-8.
The Icierre Total Box TBMF 2/2 600V is a combined switchboard bringing together, in a single unit, every protection a single-phase PV system with two independent strings up to 600 Vdc requires: it safely manages both the PV module strings (DC side) and the grid connection (AC side), cutting installation footprint and wiring time compared with assembling loose components.
Why do you need a Total Box combiner?
Every PV system must be protected against overcurrent, surges and insulation faults, and must be safely isolated for maintenance. The Total Box TBMF 2/2 600V integrates all these devices into one certified enclosure, compliant with CEI 0-21, CEI EN 61439 and CEI 64-8, ensuring system continuity and reliability.
TBMF 2/2 600V technical specifications
| Configuration | Single-phase — 2 IN / 2 OUT |
| Max DC voltage | 600 Vdc |
| Number of strings | 2 single strings |
| DC isolation | 600V 16A load-break isolator |
| DC protection | Type 2 SPD 600V + 1000V 32A fuse holder with 16/20A gPV fuses |
| AC protection | Single-phase RCBO 16A curve C, 300mA Class A |
| AC-side SPD | 230V Type 2 surge arrester |
| Connections | Pre-wired input/output terminal blocks |
| Enclosure | IP65 box, 36 DIN modules, component identification labels on plasticised rails |
| Standards | CEI 0-21, CEI EN 61439, CEI 64-8 |
When is the TBMF 2/2 600V the right choice?
It suits single-phase PV systems with two strings and open-circuit voltage within 600 Vdc, typically residential installations on two roof pitches or with different orientations, where each string must be isolated and protected separately. If the strings run above 600 Vdc, choose the TBMF 2/2 1000V; for a single string, the TBMF 1/1 600V.
What is included
- Total Box TBMF 2/2 600V in an IP65 36-module enclosure, pre-wired and certified
- 600V load-break isolator, Type 2 SPD and fuse holder with gPV fuses on the DC side
- RCBO and 230V Type 2 SPD on the AC side
- Input/output terminal blocks and component identification labels on plasticised rails
Frequently asked questions
Can I connect two strings with different orientations to the TBMF 2/2 600V?
Yes: the board has two separate inputs and outputs, with independent protection and isolation for each string. This is the typical configuration for dual-pitch roofs or differing orientations, where the strings work under non-uniform irradiance.
What is the difference between the TBMF 2/2 600V and the TBMF 2/2 1000V?
The maximum permitted DC-side voltage. The 600V model uses an isolator and surge arrester rated for 600 Vdc, the 1000V model for 1000 Vdc. The choice depends on the string open-circuit voltage at the minimum design temperature: above 600 V you need the 1000V version.
Is the TBMF 2/2 600V pre-wired or do I have to assemble it?
It arrives pre-wired and certified: isolator, SPD, fuse holders and RCBO are mounted and connected to the input and output terminal blocks. You only need to fix it to the wall and connect the PV strings and the AC line.
What does the DC side of this board protect against?
The DC side includes a 600V load-break isolator to open the strings safely, a Type 2 surge protection device against indirect lightning strikes, and a 1000V fuse holder with 16/20A gPV fuses against reverse overcurrent between the two strings.
Which documents are needed for the grid connection application?
The distribution network operator requires a single-line diagram, a declaration of conformity and the rating data of the installed protective devices. Being a certified board with labelled components, the Total Box simplifies preparing this documentation.