A modular housing assembly for an electrical connector connectable to a plug fuse includes a surrounding housing and an inner housing that receives a contact element plugged to the plug fuse and has an insertion opening through which one of the fuse contacts of the plug fuse can be plugged. The surrounding housing includes a module chamber receiving the inner housing and an access opening leading into the module chamber that passes through a housing wall and is sized to receive the fuse body of the plug fuse along the material thickness of the housing wall. The fuse contact coming from outside can better reach the internally disposed contact element. An electrical connector is provided with such a housing assembly and a contact element.

A fuse holder can include a first holding part and a second holding part. The first holding part can include a first mounting apparatus, a first joint interface, and a first conductive terminal therebetween, and the second holding part can include a second mounting apparatus, a second joint interface, and a second conductive terminal therebetween. The first joint interface can lock with the second joint interface in a primary latching position or a secondary latching position. When the first joint interface locks with the second joint interface in the primary latching position, the first conductive terminal can be a first distance from the second conductive terminal, but when the first joint interface locks with the second joint interface in the secondary latching position, the first conductive terminal can be a second distance from the second conductive terminal that is greater than the first distance.

A fuse holder comprises first and second body halves. The first body half includes a wall having a fuse cavity, a first channel extending from a first end of the fuse cavity of the first body half, and a second channel extending from a second end of the fuse cavity of the first body half. The second body half includes a wall having a fuse cavity, a third channel extending from a first end of the fuse cavity of the second body half, and a fourth channel extending from a second end of the fuse cavity of the second body half. The first channel and the third channel mate together and form a first fuse lead guide path, and the second channel and the fourth channel mate together and form a second fuse lead guide path.

Power line protection coordination schemes using pivotable multi-fuse assemblies includes multiple power line fuse assemblies deployed on a power line. Each fuse assembly includes multiple fuses that can be pivoted about an electrical connection point. Multiple fuses across the multiple power line fuse assemblies are tagged with a common visual code. Multiple such common visual codes are defined. Each common visual code maps to a protection coordination scheme to manage power flowed to loads on the power line. In turn, each protection coordination scheme is mapped to a direction of flow of power. Based on a chosen direction, a protection coordination scheme is identified. When the identified scheme is deployed, all fuses tagged with the visual code mapped to the scheme are deployed by pivoting fuses about the electrical connection point.

A fuse holder comprises body halves. A first body half comprises a wall having a fuse cavity formed therein, a first channel formed therein and extending from a first end of the fuse cavity of the first body half, and a second channel formed therein and extending from a second end of the fuse cavity of the first body half. A second body half comprises a wall having a fuse cavity formed therein, a third channel formed therein and extending from a first end of the fuse cavity of the second body half, and a fourth channel formed therein and extending from a second end of the fuse cavity of the second body half. The first channel and the third channel mate together and form a first fuse lead guide path, and the second channel and the fourth channel mate together and form a second fuse lead guide path.