A ruggedized electronic device includes a case and an enclosure within the case. The case provides a first level of explosive atmosphere protection to components within the case. The enclosure provides a second level of explosive atmosphere protection to the components within the enclosure. The second level is higher than the first level. The enclosure includes a main board within the enclosure, and a switch. The main board includes a connection from within the enclosure to the case. The switch provides the connection to the case in a first switched mode and isolates the connection from the case in a second switched mode.

The invention relates to a pyrotechnic switch, which comprises, a housing formed by a first housing part and a second housing part, at least one rivet by means of which the first housing part is riveted onto the second housing part in order to form said housing, at least one pyrotechnic actuator arranged in the housing, wherein at least one out of the first housing part or the second housing part comprises a metal insert and a plastic body overmoulded onto the metal insert, in that the metal insert comprises a passage opening for the rivet, and in that the rivet is in contact with the passage opening of the metal insert.

Solid state and hybrid circuit protection devices include improved arc-less switching capability and overcurrent protection, improved terminal assemblies and improved thermal management features that reduce or eliminate ignition sources for hazardous environments. The solid state and hybrid circuit protection devices are ignition protected and avoid possible explosions and therefore obviate a need for conventional explosion-proof enclosures to ensure safe operation of an electrical power system in a hazardous location.

The disclosure includes a sealed device having a seal around an internal chamber, the seal having at least two closed-loop portions through which a through element extends.

The invention relates to a pyrotechnic switch, which comprises, a housing formed by a first housing part that is assembled with a second housing part, and at least one pyrotechnic actuator arranged in the housing, wherein at least one out of the first housing part or the second housing part comprises a metal reinforcement and a plastic body overmolded onto the metal reinforcement, wherein the plastic body comprises, a first portion made of a first plastic material, and a second portion made of a second plastic material.

A rupture resistant relay. The relay has an outer housing with contacts extending through the outer housing. An outer core is positioned in the outer housing. A cover member is provided on the outer core. The cover member and the outer core encapsulate an interior chamber. A support member extends over the cover member. The support member is integrally attached to the outer core. The cover member prevents components the cover member and components of the interior chamber from projecting out of the envelope of the outer housing when an explosion occurs in the interior chamber.

The invention relates to a pyrotechnic switch, which comprises: a housing (10) formed by a first housing part (11) that is assembled with a second housing part (12); and at least one pyrotechnic actuator (32) arranged in the housing (10);
wherein at least one out of the first housing part (11) or the second housing part (12) comprises a metal reinforcement (16) and a plastic body (C2) overmolded onto the metal reinforcement (16),
characterized in that the plastic body (C2) comprises: a first portion made of a first plastic material, and a second portion made of a second plastic material.

Aspects and techniques of the present disclosure relate to enclosures, such as, electrical enclosures, for example, explosion-proof enclosures, and including advantageous features and methods usable with such enclosures. Disclosed features and techniques relate to: an enclosure fastening device; a visual indicator; an enclosure handling assist arrangement; a control handle; and a reset controller.

A rupture resistant relay. The relay has an outer housing with contacts extending through the outer housing. An outer core is positioned in the outer housing. A cover member is provided on the outer core. The cover member and the outer core encapsulate an interior chamber. A support member extends over the cover member. The support member is integrally attached to the outer core. The cover member prevents components the cover member and components of the interior chamber from projecting out of the envelope of the outer housing when an explosion occurs in the interior chamber.

Compliant electrical circuit protection devices are described for use in hazardous environments without presenting ignition risks for potentially explosive environmental conditions. Sensing features and systems may evaluate wiring limits and user selected settings for compatibility, detect loose connections and operating parameters to ensure safe operation of the device, and to intelligently diagnose and manage issues of concern for the circuit protection devices as well as the larger electrical power system.