Issue

What is the significance of the 'H' suffix on an M340 or M580 part number?

Product Line

Modicon M340, Modicon M580

Resolution

An industrial installation environment can be significantly degraded by condensation and pollution:

• High values of relative humidity & temperature simultaneously.

• Presence of air contaminants such as salt mist or corrosive gases.

• Dust and other solid contamination

The 'H' indicates a 'Hardened' product that will run at extended heat and humidity ranges along with offering protection against contaminants.

See attached document.

Released for:Schneider Electric USA