CJTHT, CJTHT/PLUS, CJTHT/ATEX soundproofed axial smoke extraction units F400/F300, up to ~158 000 m³/h
Country: · Model: CJTHT / CJTHT/PLUS / CJTHT/ATEX
CJTHT axial smoke extraction fan in a sound- and heat-insulated galvanized steel box, approved to EN 12101-3 in classes F400 (400 °C/2 h) and F300 (300 °C/2 h). Sizes 40–125 with a 400–1250 mm impeller deliver up to 158 500 m³/h. The unit is installed in technical rooms and on duct routes of car parks, shopping and public buildings where low noise matters.
- Type
- axial smoke extraction fan in a soundproofed box, operation in the fire zone
- Fire resistance
- F400 and F300 per EN 12101-3 (certificates 0370-CPR-0312 F400 and 0370-CPR-0974 F300 per datasheet; 2797 CPR 840443 per website)
- Impeller diameter
- 400–1250 mm (sizes 40–125)
- Motor power
- 0.55–75 kW (per model codes)
Technical specifications
| Type | axial smoke extraction fan in a soundproofed box, operation in the fire zone |
|---|---|
| Fire resistance | F400 and F300 per EN 12101-3 (certificates 0370-CPR-0312 F400 and 0370-CPR-0974 F300 per datasheet; 2797 CPR 840443 per website) |
| Impeller diameter | 400–1250 mm (sizes 40–125) |
| Motor power | 0.55–75 kW (per model codes) |
| Maximum airflow | up to ~158 500 m³/h (per datasheet) |
| Motor | class H, S1/S2 modes, IP55, 1 or 2 speeds, IE3 from 0.75 kW |
| Power supply | 3~ 230/400 V 50 Hz (up to 3 kW), 400/690 V 50 Hz (above 3 kW) |
| Handled air temperature, S1 | −20 (−25)…+40 °C, up to +50 °C in a hot climate |
| Box casing | galvanized steel with heat and sound insulation |
| Number of blades (size 125) | 6, 9 or 12 |
| Versions | CJTHT; CJTHT/PLUS: with silencers; CJTHT/ATEX: ATEX cat. 3 (Ex II 3G, zone 2) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The box contains a tubular fan with a steel casing and a cast aluminium impeller with an adjustable blade angle. Class H motors work in S1 and S2 modes, have ball bearings, IP55 protection and one or two speeds, and from 0.75 kW meet class IE3. Supply is 230/400 V 50 Hz up to 3 kW and 400/690 V 50 Hz above 3 kW, with power of 0.55–75 kW per model codes. Air temperature in S1 mode is from −20 to +40 °C, and up to +50 °C in a hot climate. Versions for 2, 4, 6 and 8 poles and two-speed 2/4, 4/8 and 6/12 exist, and for size 125 impellers with 6, 9 or 12 blades and 12-pole motors at 500 rpm are available. The fan is coated with polyester resin cured at 190 °C. The sound pressure level at the inlet of small models is 31–71 dB(A) depending on speed. Reverse airflow direction, a fully reversible impeller and a vertical axis are made on request.
How to choose
CJTHT is the basic unit, CJTHT/PLUS also has built-in silencers, and CJTHT/ATEX is certified to ATEX category 3 (Ex II 3G) for zone 2. If noise is not critical and you need an airflow of up to 199 000 m³/h, look at THT and THT/CL without a box. For tunnel shafts there is THT-TM, and for jet ventilation of car parks THT/IMP.
Request a price and lead time
CJTHT, CJTHT/PLUS, CJTHT/ATEX soundproofed axial smoke extraction units F400/F300, up to ~158 000 m³/h. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Which fire resistance certificates are given for CJTHT?
The datasheet names 0370-CPR-0312 for F400 and 0370-CPR-0974 for F300, while the website page gives 2797 CPR 840443.
What is the maximum airflow of CJTHT?
Up to 158 500 m³/h per the datasheet table, impeller diameter 400–1250 mm.
Is CJTHT available in an explosion-proof version?
Yes, CJTHT/ATEX has ATEX category 3 (Ex II 3G) certification for zone 2.
What does the CJTHT/PLUS version offer?
It has built-in silencers, so it is quieter than the basic CJTHT. This matters for car parks and public buildings.
REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.