Clipsal by Schneider Electric | MAX9 Surface Mount Enclosure 54 Pole 3 Row | IP40 Indoor
The Clipsal MX9SB318S is a MAX9 surface-mount switchboard enclosure with 54 module poles across 3 rows, rated IP40 for indoor distribution. It takes MAX9 devices and MAXBAR busbar systems, suiting larger residential and light-commercial boards. The MX9SB318S mounts on the wall surface and ships with a reversible door that hinges from either side.
A growing home or light-commercial board can outgrow a standard enclosure once solar, EV, and sub-circuits are added. A 3-row board keeps the enclosure shorter on the wall than a 4-row box while still carrying a high pole count. The MX9SB318S sets 54 poles across 3 rows, so a full circuit list sits behind a single door with a compact wall footprint.
For a switchboard upgrade or re-board, the MX9SB318S carries a full modern circuit list in one box, which keeps the install tidy on a busy board. The 54-pole, 3-row layout packs 18 modules to a row, so wiring stays grouped and easy to label. A reversible door lets the installer set the hinge to suit the wall, and the enclosure lands as a surface mount with no cavity to cut.
Features
- 54-pole capacity — 3 rows of 18 18mm modules give room for a large distribution board.
- Surface mount — the MX9SB318S fixes flat on an internal wall with no cavity or recess to cut.
- MAX9 compatible — takes MAX9 MCBs, RCBOs, and MAXBAR busbar systems for a keyed, tidy assembly.
- Reversible door — the door hinges from either side, so the MX9SB318S fits left or right-hand wall positions.
- Three-row layout — poles split across 3 rows keep the enclosure shorter than a 4-row board on the wall.
- Expansion headroom — spare ways in the 54-pole frame leave room to add circuits without a second board.
- White plastic body — moulded RAL 9003 white enclosure gives a clean board face in a switch room or cupboard.
- Modern load ready — sized for solar, EV, and three-phase circuits on larger home and light-commercial boards.
- IP40 rating — protected against small solid objects, suited to dry indoor and protected locations.
- Indoor use only — IP40 gives no rain or splash protection, so the MX9SB318S is not for outdoor or damp positions.
- Bulky item — this is a large enclosure, so check wall space and fixings before the install.
Where to use
- Large residential switchboards — houses a full circuit list for a big home with solar and EV loads.
- Renovation re-boards — the MX9SB318S replaces an undersized board on an upgrade where circuit count has grown.
- New builds — sized for new homes speccing high circuit counts behind one indoor board.
- Light-commercial distribution — suits shops, offices, and units needing a large pole count in one enclosure.
- Switch rooms and cupboards — the MX9SB318S mounts in a dry internal switch room, plant cupboard, or garage.
- Solar and EV boards — carries the breakers and RCBOs for a larger PV, battery, and EV charging setup.
The MX9SB318S is rated IP40 and is an indoor enclosure only. It gives no protection against rain, splash, or damp, so it should not be mounted outdoors or in wet areas. It is a surface-mount box, not a flush or recessed enclosure, and fitting must be carried out by a licensed electrician.
