These 80W heaters have been designed specifically for the needs of the SuperVolcano HotEnd and provide the much-needed power in order to achieve the highest flow rate possible. These have an extra-long 47.50mm heater cartridge that runs the full length of the SuperVolcano block.
The 12V heater cartridge is supplied with a MOSFET as the current draw is up to 8A
The 24v heater cartridge is not supplied with a MOSFET as the current draw is only 3.9A
The 12V SuperVolcano heater draws up to 8A which is more than most controller boards can handle. Therefore it cannot be used without the included MOSFET switch which will handle the high current requirement.
Do not use this heater with any other block than the SuperVolcano block. Using the heater with another block may result in catastrophic failure of the system.
Care must be taken when bending the wires, ideally use a round form to provide a radius to the bed to avoid snapping the wires. Also, ensure adequate strain relief so as to not fatigue the wires by repeatedly bending them as this will cause failure.
The full health and safety information can be found in the datasheet here