An electrical power connector, comprising: a dielectric connector housing including a housing body that defines a mounting interface configured to be mounted onto a substrate and a mating interface configured to mate with at least one complementary electrical connector along a mating direction, the mating interface comprising a plurality of receptacle openings; a plurality of electrical contacts supported by the connector housing and spaced apart from each other along a lateral direction that is substantially perpendicular to the mating direction, the electrical contacts including 1) a mating portion disposed within the receptacle opening and configured to mate with a complementary electrical contact of the at least one complementary electrical connector when the connector housing is mated with the at least one complementary electrical connector, and 2) a mounting portion configured to electrically connect to the substrate when the connector housing is mounted onto the substrate; wherein the plurality of electrical contacts define pairs of electrical contacts, each pair of electrical contacts including a first electrical contact and a second electrical contact disposed immediately adjacent the first electrical contact such that no other electrical contact is disposed between the first and second electrical contacts; at least one electrically insulative fin supported by the housing body, the at least one fin disposed between the first and second electrical contacts of at least one of the pairs of electrical contacts along the lateral direction, wherein the mounting portion of each of the first and second electrical contacts terminates at a mounting end that is spaced from the housing body a first distance (d 1) along the transverse direction that is perpendicular to each of the mating direction and the lateral direction, characterized in that the at least one fin extends from the housing body along the transverse direction and terminates at a distal end that is spaced from the housing body a second distance (d 2) along the transverse direction, such that the fin is configured to extend through a slot in the substrate in the transverse direction when the electrical power connector is mounted to the substrate, and the second distance (d 2) is greater than the first distance (d 1), such that the mounting ends of all the electrical contacts of the electrical power connector are touch-proof. a dielectric connector housing including a housing body that defines a mounting interface configured to be mounted onto a substrate and a mating interface configured to mate with at least one complementary electrical connector along a mating direction, the mating interface comprising a plurality of receptacle openings; a plurality of electrical contacts supported by the connector housing and spaced apart from each other along a lateral direction that is substantially perpendicular to the mating direction, the electrical contacts including 1) a mating portion disposed within the receptacle opening and configured to mate with a complementary electrical contact of the at least one complementary electrical connector when the connector housing is mated with the at least one complementary electrical connector, and 2) a mounting portion configured to electrically connect to the substrate when the connector housing is mounted onto the substrate; 1) a mating portion disposed within the receptacle opening and configured to mate with a complementary electrical contact of the at least one complementary electrical connector when the connector housing is mated with the at least one complementary electrical connector, and 2) a mounting portion configured to electrically connect to the substrate when the connector housing is mounted onto the substrate; wherein the plurality of electrical contacts define pairs of electrical contacts, each pair of electrical contacts including a first electrical contact and a second electrical contact disposed immediately adjacent the first electrical contact such that no other electrical contact is disposed between the first and second electrical contacts; at least one electrically insulative fin supported by the housing body, the at least one fin disposed between the first and second electrical contacts of at least one of the pairs of electrical contacts along the lateral direction, wherein the mounting portion of each of the first and second electrical contacts terminates at a mounting end that is spaced from the housing body a first distance (d 1) along the transverse direction that is perpendicular to each of the mating direction and the lateral direction, characterized in that the at least one fin extends from the housing body along the transverse direction and terminates at a distal end that is spaced from the housing body a second distance (d 2) along the transverse direction, such that the fin is configured to extend through a slot in the substrate in the transverse direction when the electrical power connector is mounted to the substrate, and the second distance (d 2) is greater than the first distance (d 1), such that the mounting ends of all the electrical contacts of the electrical power connector are touch-proof.