Explosion-proof electrical device with first and second components (11, 12) and with a plug-in connector for electrical connection of the first and second components (11, 12) of the electrical device, - wherein the plug-in connector comprises a contact arrangement and a counter-contact arrangement, - wherein the first component has a first portion of an electrical circuit which is electrically connected to the contact arrangement of the plug-in connector, and wherein the second component has a second portion of the electrical circuit which is electrically connected to the counter-contact arrangement of the plug-in connector, - wherein the portions (25, 26) are electrically connected in series, - wherein the contact arrangement has at least one first and one second contact type (17, 18) each with at least one contact (17a, 17b...; 18a, 18b...) and wherein the counter-contact arrangement has at least one first and one second contact type (20, 21) each with a counter-contact (20a, 20b...; 21a, 21b...), - wherein connection of the at least one contact (17a, 17b...) of the first contact type to the at least one counter-contact (20a, 20b...) of the first contact type forms a first contact/counter-contact pairing, and connection of the at least one contact (18a, 18b...) of the second contact type to the at least one counter-contact (21 a, 21b...) of the second contact type forms a second contact/counter-contact pairing, characterised in that - the contact/counter-contact pairings (22, 23) have two different types of ignition protection, - wherein the first contact/counter-contact pairings with a first type of ignition protection are configured for a later contact-make and an earlier contact-break, and wherein the second contact/counter-contact pairing is designed with another second type of ignition protection and is configured for an earlier contact-make and a later contact-break, - wherein the contact/counter-contact pairings with the first type of ignition protection are implemented by encapsulation of a counter-contact group or counter-contact which, with a contact group or a contact, establishes a gap which is so long and so narrow that, on an explosion inside the encapsulation, neither flames nor glowing particles emerge from the gap. - wherein the plug-in connector comprises a contact arrangement and a counter-contact arrangement, - wherein the first component has a first portion of an electrical circuit which is electrically connected to the contact arrangement of the plug-in connector, and wherein the second component has a second portion of the electrical circuit which is electrically connected to the counter-contact arrangement of the plug-in connector, - wherein the portions (25, 26) are electrically connected in series, - wherein the contact arrangement has at least one first and one second contact type (17, 18) each with at least one contact (17a, 17b...; 18a, 18b...) and wherein the counter-contact arrangement has at least one first and one second contact type (20, 21) each with a counter-contact (20a, 20b...; 21a, 21b...), - wherein connection of the at least one contact (17a, 17b...) of the first contact type to the at least one counter-contact (20a, 20b...) of the first contact type forms a first contact/counter-contact pairing, and connection of the at least one contact (18a, 18b...) of the second contact type to the at least one counter-contact (21 a, 21b...) of the second contact type forms a second contact/counter-contact pairing, characterised in that - the contact/counter-contact pairings (22, 23) have two different types of ignition protection, - wherein the first contact/counter-contact pairings with a first type of ignition protection are configured for a later contact-make and an earlier contact-break, and wherein the second contact/counter-contact pairing is designed with another second type of ignition protection and is configured for an earlier contact-make and a later contact-break, - wherein the contact/counter-contact pairings with the first type of ignition protection are implemented by encapsulation of a counter-contact group or counter-contact which, with a contact group or a contact, establishes a gap which is so long and so narrow that, on an explosion inside the encapsulation, neither flames nor glowing particles emerge from the gap.