The Rittal Ex-enclosure type KEL 9405600 is an empty, explosion-protected enclosure made of stainless steel 1.4301 (AISI 304), designed for use in explosive atmospheres in accordance with Directive 2014/34/EU. It is approved for Zones 1 and 2 (gaseous explosive atmosphere) as well as 21 and 22 (dust explosive atmosphere), and provides protection through increased safety (Ex e) and enclosure (Ex tb) according to EN 60 079. The enclosure has dimensions of 600 mm (width) × 600 mm (height) × 210 mm (depth) and is delivered with a hinged door, mounting plate, and locking system. The surface of the enclosure is brush-finished with a grit 400 and a roughness depth under 0.8 µm, ensuring a uniform, easy-to-clean, and corrosion-resistant surface. The mounting plate is made of galvanized steel sheet and has dimensions of 549 mm × 570 mm.

Applications
This enclosure is designed for use in hazardous areas where explosion risks exist due to gases, vapors, or dusts. It is suitable for Zones 1/21 (higher risk) and 2/22 (lower risk) according to ATEX Directive 2014/34/EU. The ambient temperature can range from -30 °C to +80 °C, although the actual operating temperature may be limited by the installed devices. Certification is granted under certificates IEC EX PTB 09.0035U and PTB 02 ATEX 1082U.

Features and Equipment in Detail
The enclosure features a continuous silicone gasket, ensuring a tight seal between the enclosure and door. The door is equipped with two latching locks that operate with a 3 mm double-barrel insert to ensure secure and tight locking. The mounting plate allows for the installation of electrical components and devices inside the enclosure. The enclosure is delivered empty, allowing for individual configuration with required components.

Technology Explained Simply
The IP 66 protection rating according to IEC 60 529 means the enclosure is dust-tight and protected against powerful water jets, making it suitable for outdoor use. The NEMA 4X rating corresponds to a high level of protection against dust, water, and corrosion, especially in marine or industrial environments. Certification according to UL 50E (Type 1, Type 4, Type 4X, Type 12) confirms suitability for various environmental conditions, including damp, dusty, or corrosive areas. The use of stainless steel 1.4301 ensures high corrosion resistance and mechanical strength, even under long-term stress.

Compatibility and Accessories
Various accessories are available for this enclosure, enhancing installation and functionality. These include grounding straps in different cross-sections (4 mm², 10 mm², 16 mm², 25 mm²) and lengths (170 mm, 300 mm), ensuring secure grounding connections. Wall mounting brackets made of stainless steel 1.4301 enable secure wall mounting. TH 35/15 mounting rails with a length of 587 mm are suitable for installing components inside the enclosure. These accessories are specifically designed for the dimensions of the KEL 9405600.

Installation and Mounting
Mounting is performed using the included mounting plate, which is fixed inside the enclosure. Wall mounting is done using the designated mounting points on the enclosure. The door is attached using the integrated hinges and locks. Electrical components are installed on the mounting plate or directly inside the enclosure, with electrical connections made in accordance with applicable standards and regulations.

Operational Advantages
The enclosure offers high mechanical and chemical resistance due to the use of stainless steel 1.4301. The IP 66 protection rating ensures reliable protection against dust and water, increasing service life and reliability. Approval for use in explosive atmospheres enables deployment in critical industrial environments. The integrated mounting plate and compatibility with standard accessories simplify installation and maintenance. The locks with double-barrel inserts ensure secure and tight latching, even after frequent opening and closing.