Clipsal by Schneider Electric | MAX9 MAXBAR Comb Busbar 3P+N 18 Module | 100A 400V with Neutral Terminal Block
The Clipsal MX9B318N is a MAX9 MAXBAR top-feed comb busbar rated 100A at 400V, configured 3P+N across 18 modules of 18mm pitch with a neutral terminal block. The MX9B318N takes three phases and neutral at the main incomer and combs them across a row of Clipsal MAX9 three-phase protective devices, replacing the cable tails a traditional switchboard loom needs. It complies with AS/NZS 61439-3 and AS/NZS 3000, and ships with the neutral terminal block for single-row boards or the row that carries the main switch.
The row that holds the main switch has to distribute three phases and neutral across its protective devices, which the conventional cable method makes slow and untidy. A single-row three-phase board faces the same task with no separate incomer row to draw from. The MX9B318N handles this with an integrated neutral terminal block and a top-feed comb busbar that lands three phases and neutral in one pass. Its cuttable configuration lets an electrician trim the bar to the exact module count a row requires.
MAXBAR is built to speed up switchboard assembly: Clipsal rates the system at up to 15 times faster than feeding devices with individual cables. The MX9B318N arrives as a kit with the neutral terminal block and tooth covers the incomer row needs, so there is less to source and less to hand-terminate. Feeding three phases and neutral from one comb gives a cleaner assembly that is quicker to verify and hand over. For contractors building three-phase MAX9 boards, the busbar keeps every switchboard consistent from job to job.
Features
- 100A rated — the MX9B318N carries up to 100A per phase across the bar, matching the main switch and device ratings used in MAX9 boards.
- Neutral terminal block included — ships with 1 neutral terminal block, so the MX9B318N suits single-row boards and the row carrying the main incomer.
- 3P+N configuration — distributes three phases and neutral along the bar, feeding three-phase final sub-circuits without separate cable looming.
- 400V three-phase rated — rated 400V AC for three-phase distribution across a MAX9 switchboard row.
- 18 modules of 18mm pitch — spans an 18-way three-phase row, with a 9mm outgoer pitch that lines up with Clipsal MAX9 devices.
- Dedicated incomer section — reserves an incomer section for the three-phase main feed and combs the outgoing ways to the devices.
- Top-feed comb design — picks up three phases and neutral at the incomer and combs them down to each device in a single pass.
- Cuttable bar — trims to the exact number of modules a row uses, so one 18-module bar also suits shorter rows.
- Insulated body — the busbar is insulated and rated to 500V, with a 4kV impulse withstand voltage for switchboard use.
- 960 deg C fire resistance — the insulation carries a 960 deg C glow-wire rating for enclosure safety.
- Compliant to AS/NZS 61439-3 — meets AS/NZS 61439-3 and AS/NZS 3000 for low-voltage switchgear assemblies.
- White RAL 9003 finish — the bar is finished in white electric (RAL 9003) to match Clipsal MAX9 enclosures.
Where to use
- Single-row three-phase boards — the MX9B318N feeds three phases and neutral across a single-row enclosure that carries its own main switch.
- The main incomer row — suits the row holding the main switch in a multi-row MAX9 enclosure, where the neutral terminal block is needed.
- Three-phase device rows — lands the feed across a row of Clipsal MAX9 three-phase RCBOs and circuit protection on a 3P+N row.
- High circuit-count rows — the 18-module length suits larger three-phase boards with a full row of devices.
- Switchboard upgrades — replaces cable-tail looming when building a three-phase row into a MAX9 enclosure.
- Consistent board layouts — the MX9B318N helps contractors standardise three-phase MAX9 switchboard builds across multiple jobs.
The MX9B318N is a three-phase busbar and is not for single-phase 1P+N rows, which require a 1P+N busbar. It is sized for an 18-module 3P+N row, so it is not suited to module counts above 18 or to other busbar ranges. It is a MAX9 system component for installation by a licensed electrician, not a general-purpose busbar for ad-hoc use.
