Surge protective device modules and assemblies

A surge protective device (SPD) module comprising:

• an SPD module printed circuit board (PCB);
• an SPD module circuit at least partly embodied in the SPD module PCB and including an overvoltage protection component mounted on the SPD module PCB;
• and
• a thermal disconnector mechanism mounted on the SPD module PCB, the thermal disconnector mechanism operative to transition from a ready configuration to an actuated configuration responsive to sufficient overheating of the overvoltage protection component, the thermal disconnector mechanism comprising:
• first and second electrically conductive bypass contacts mounted on the SPD module PCB and connected to the SPD module circuit;
• and
• a switch member movable from a ready position to a displaced position to thereby transition the thermal disconnector mechanism from the ready configuration to the actuated configuration, the switch member comprising an electrically conductive portion;
• wherein in the ready configuration, the electrically conductive portion does not electrically connect the first and second bypass contacts and the SPD module circuit forms a first current path through the overvoltage protection component;
• wherein in the actuated configuration, the thermal disconnector mechanism forms an alternate second current path that bypasses the overvoltage protection component;
• and,
• wherein when the switch member is in the displaced position and the thermal disconnector mechanism is in the actuated configuration, the electrically conductive portion contacts and electrically connects the first and second bypass contacts to form the alternate second current path through the electrically conductive portion and the first and second bypass contacts.

A surge protective device (SPD) assembly comprising:

• a base module comprising:
• a base module housing;
• an input cable connector and an output cable connector on the base module housing;
• at least one base connector on the base module housing;
• and
• a base module circuit electrically connecting the input cable connector to the output cable connector, and electrically connecting the input cable connector and the output cable connector to the at least one base connector;
• and
• an SPD module configured to be mounted on the base module, the SPD module comprising:
• an SPD module housing;
• an SPD module printed circuit board (PCB);
• an SPD module circuit at least partly embodied in the SPD module PCB and including an overvoltage protection component mounted on the SPD module PCB;
• at least one SPD module connector configured to electrically contact the at least one base connector when the SPD module is mounted on the base module and to thereby electrically connect the base module circuit to the SPD module circuit to form an SPD circuit;
• and
• a thermal disconnector mechanism mounted on the SPD module PCB;
• wherein:
• the thermal disconnector mechanism is operative to transition from a ready configuration to an actuated configuration responsive to sufficient overheating of the overvoltage protection component;
• when the thermal disconnector mechanism is in the ready configuration, the SPD circuit forms a first current path through the overvoltage protection component;
• when the thermal disconnector mechanism is in the actuated configuration, the thermal disconnector mechanism forms an alternate second current path that bypasses the overvoltage protection component;
• the first current path extends from the input cable connector to the output cable connector through the overvoltage protection component;
• and
• the second current path extends from the input cable connector to the output cable connector through the SPD module circuit and bypasses the overvoltage protection component.