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The Clipsal MX9SP340 is a three pole Type 2 surge arrester rated for a maximum discharge current of 40kA, built for DIN rail mounting inside a switchboard. The MX9SP340 uses metal oxide varistor cartridges with a white and red flag for local signalling, plus one normally open and one normally closed contact for remote signalling. It conforms to IEC 61643-11 and EN 61643-11, carries the RCM compliance mark, and is rated for TN-C, TN-S and TT earthing systems.
A portable surge board only protects the appliances plugged directly into it. Ovens, air conditioning compressors, pool equipment and hardwired lighting sit outside that coverage, and a transient overvoltage travelling down the mains reaches them first. Installing a Type 2 surge arrester at the distribution board relocates the protection ahead of every final subcircuit. The MX9SP340 constrains the let-through to a voltage protection level below 1.6kV and indicates varistor cartridge condition on a white and red signalling flag.
Switchboard upgrades and three phase new builds are the natural point to introduce surge protection. The MX9SP340 occupies six 9mm module positions on the existing DIN rail alongside the circuit protection. Uniform terminal heights and modular dimensions make for a neat installation beside the adjacent protective devices. When a varistor cartridge reaches end of life, the signalling flag indicates it. The cartridge is replaceable as a spare part, so a callback stays a cartridge swap rather than a board rebuild. That serviceability makes surge protection an easy line item to quote on a switchboard upgrade.
The MX9SP340 is rated IP20, so it is not suitable for exposed or outdoor mounting outside an enclosure. It is a type 2 arrester for the distribution network and is not rated to take direct lightning current at the service entrance. Cartridges are consumable: once the flag shows a spent cartridge, the device no longer gives full surge protection until that cartridge is replaced.
Verified Sparky Direct customer reviews: Clipsal MX9SP340 | MAX9 SPD 3P 40kA Surge Protection Device (MX9SP340)
"Replaceable cartridge type, protecting from the meter box to the rest of the premise." — Marcus
(MX9SP340)
The MX9SP340 conforms to IEC 61643-11 and EN 61643-11 for low voltage surge protective devices and carries the RCM compliance mark. It is classified as a type 2 surge arrester for the electrical distribution network, with a nominal discharge current of 15kA and a maximum discharge current of 40kA.
Installation must be carried out by a licensed electrician. The arrester clips onto standard DIN rail inside the switchboard and takes six 9mm module positions. Tunnel type terminals accept 2.5 to 25mm2 rigid or 4 to 16mm2 flexible copper from the top or bottom, tightened to 3.5Nm.
The 40kA figure is the maximum discharge current (Imax), the largest single surge the arrester is rated to take. The 15kA figure is the nominal discharge current (In), the repeated duty level defined under IEC 61643-11. Both are measured on the standard 8/20 microsecond waveform.
TN-C, TN-S and TT earthing systems are all listed on the Schneider datasheet for this three pole arrester. Rated operational voltage is 240/415V AC plus or minus 6 percent at 50/60Hz, with a maximum continuous operating voltage of 350V AC.
The surge arrester carries a white and red flag on the front for local signalling of cartridge status, visible during a routine board inspection. The metal oxide varistor cartridges are replaceable and available as a spare part, so a spent cartridge does not mean replacing the whole device.
One normally open and one normally closed contact are fitted for remote signalling. The signalling circuit is rated 250V AC at 50/60Hz with a signalling output current of 0.25A, which suits connection to a building management system, alarm panel or indicator lamp.
Clipsal covers the MX9SP340 for seven years domestic use and seven years commercial use, starting from the invoice date. Claims are handled as a Clipsal in home warranty, so the product does not need to be uninstalled or returned. Warranty is void if the product is not installed by a licensed electrician.
The IP20 rating means the arrester belongs inside an enclosed switchboard, with no protection against water or dust in an exposed position. As a type 2 device it covers the distribution network and is not rated to take direct lightning current at the service entrance.
The Clipsal by Schneider Electric MX9SP340 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Warranty starts from Invoice Date
Domestic Use: 7 Year
Commercial Use: 7 Year
Warranty Method: Clipsal in home warranty
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Clipsal by Schneider Electric |
| SKU | MX9SP340 |
| Model # | MX9SP340 |
| Barcode # | 9311554814212 |
| Package Weight | 0.340kg |
| TYPE | VALUE |
|---|---|
| Type | Circuit Protection |
| Brand | Clipsal by Schneider Electric |
| Range | Clipsal - Max9 |
| Colour | White (RAL 9003) |
| Rated Current (A) | 40kA |
| Height (mm) | 85 |
| Width (mm) | 54 |
| Depth (mm) | 64 |
| Mounting | DIN Rail |
| Voltage (V) | 240Vac |
| IP Rating | IP20 |
| Earth Leakage Protection Class | Type 2 |
| Poles | 3P |
| Equivalent Max 4 Reference | 940RMT/3 |
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