400 ºC/2h rated roof-mounted multifunctional extractor fans for work in fire risk zones. designed for smoke extraction in industrial or similar buildings

Fan:
- Painted. galvanised sheet steel support base.
- Cast aluminium orientable rotors.
- Anti-contact protective grille pursuant to standard UNE‐EN ISO 12499.
- Painted. galvanised sheet steel rain cap. with natural air outlet. Approved based on standard EN 12101-3. with certificate no. 0370-CPR-0544.

Motor:
- Class H motors. S1 continuous operation and S2 emergency use. with ball bearings. IP55 protection and with 1 or 2 speeds. depending on model.
- Multi voltage motor. special design valid for 220/380V 60Hz. 254/440V 60Hz. 265/460V 60Hz. 277/480V 60Hz
- Maximum temperature of air to be carried: S1 continuous operation -20ºC +40ºC. Also suitable for hot climates with temperatures up to 50ºC. S2 operation 300ºC/2h. 400ºC/2h.

Finish:
- Anticorrosive finish of polyester resin polymerised at 190 ºC. previously degreased with phosphate-free nanotechnological treatment.