Bernstein Series CP and CPS polyester enclosures are made of high-grade glass fiber-reinforced polyester. The black polyester enclosures conform to the requirements for Ex applications and are sufficient for accepting and encapsulating electrical and electronic and control components in harsh environments or implicitly explosive atmospheres. All enclosures have achieved protection class IP 66 in accordance with DIN EN 60529. The captive stainless steel cover screws are maintained by a self-latching element integrated into the cover. The threaded bushes are embedded in the flange on the narrow sides of the base and obtain mounting rails, plates and PC boards.