N-TB Ex-e/Ex-i Terminal Enclosures

N-TB Ex-e/Ex-i Terminal Enclosures
Donat Czapski

Donat Czapski – I am at your disposal

+48 695 244 220



We know the requirements of insurers

From ATEX AUDIT to protection implementation

We provide 24/7 service

N-TB Ex-e/Ex-i Terminal Enclosures

Stainless steel version for Zone 1, 2, 21 and 22

The N-TB enclosure has been specifically designed for installation in locations with aggressively hostile environmental conditions. These include such locations as petrochemical hazardous areas, pharmaceutical, food process and utility applications.

Looking for a less expensive alternative perhaps?

Check out HARDO brand terminal boxes

HARDO explosion-proof terminal boxes are an excellent alternative to well-known global manufacturers. They are certified for use in zones 1, 2, 21 and 22. We supply all control stations with accessories according to the investor’s requirements.


Manufactured from high quality stainless steel that is electro-polished for a highly corrosion resistant “Chromium enriched“ surface. This multi certified enclosure is available in different sizes and depths, each with the facility for many configuration possibilities for a multitude of applications. Using the highest quality materials, unique design benefits and precision manufacturing the N-TB range is the benchmark in heavy-duty gauge enclosures of its class. An integral drainage channel prevents liquids or other solids contaminates from running in or falling into the enclosure when the door is opened, and to minimise gasket path contamination.

Degree of protection

The high integrity „one piece“ sealing gasket for superior ingress protection (IP) of 66 and excellent recovery and re-sealing properties for continuous environmental protection. There is an option for the mounting of up to four 3 mm thick gland-plates on each side in 4 possible combinations of 1, 2, 3 or 4 gland-plates. All units are sealed to IP66 by a high integrity Silicon gasket and secured by stainless steel bolts into blind inserts.

  • S316L Stainless Steel (1.4404 to EN 10088)
  • Superior “corrosion resistant” electro chemically polished
  • High integrity „one piece“ silocon gasket
  • Detachable hinged door, stainless steel hinges with captive stainless steel hex screws
  • 4 x external welded lugs, 11 mm Ø holes / slots
  • Optional Gland Plate / Entries 3 mm thick
  • Extended ambient temperatures –40 °C to + 55 °C as option
  • Certification TR-CU, AEx, cULus and Germanischer Lloyd on request

N-TB up to 2 x 51 terminals

  • N-TB 1
  • N-TB 2
  • N-TB 3
  • N-TB 4
  • N-TB 5
  • N-TB 6
  • N-TB 7

N-TB up to 6 x 171 terminals

  • N-TB 8
  • N-TB 9
  • N-TB 10
  • N-TB 11
  • N-TB 12
  • N-TB 13
  • N-TB 14
  • N-TB 15

Ex Electrical Equipment – offer

GRP Ex Terminal Boxes HARDO


Increased insulation clearances of built-in components, high IP rating of enclosures, temperature restrictions, use of certified components and certified electrical equipment.

aluminum control stations hardo


The offered control stations and panels can be operated even under extreme industrial conditions. Our enclosures are resistant to corrosion and the effects of aggressive chemicals.

Explosion-proof cable glands for armored cables HARDO

EX Cable

Ex cable glands are used wherever a properly protected connection of armored or non-armored cable to machinery or equipment is required.

eXLink - the Miniature-Power Connector


ATEX certified round plugs and receptacles – contact-making insert can be arranged in various positions

Our own

Guaranteed high quality due to total control over the product at each stage of the manufacturing process. Quick implementation due to shorter lead times for non-standard solutions

Secure your industrial plant

Do you have any questions?

Donat Czapski Grupa WOLFF zdjecie
DONAT CZAPSKI - I am at your disposal

We will answer questions about: offer, technical specification, delivery, assembly.

or send your inquiry