I read this as "animation providing an illustration of the concept used in MHP protection systems for devices using Li-Ion batteries"

Made by Tyco, fits the electronics field

"Metal Hybrid PPTC (MHP) Devices
Resettable Circuit Protection for High-Rate-Discharge Li-ion Battery Applications
The rapidly expanding market for high-rate-discharge lithium ion (Li-ion) batteries used in
applications such as cordless power tools, e-bikes and back-up power supplies has created the need for cost-effective circuit protection devices capable of providing 30A+ hold currents at voltage ratings over 30VDC. To meet this need, a new hybrid device has been developed that connects a bimetal protector in parallel with a PPTC (polymeric positive
temperature coefficient) device. The resulting Metal Hybrid PPTC (MHP) device helps provide resettable overcurrent protection while also utilizing the low resistance of the PPTC device to help prevent arcing in the bimetal protector at higher currents."

"Design Concept
In normal operation, current passes through the bimetal contact due to its low contact resistance. During an abnormal event, such as a power tool rotor lock, higher current is generated in the circuit causing the bimetal contact to open and its contact resistance
to increase. At this point, the current shunts to the lower resistance PPTC device which helps prevent arcing between the contacts while also heating the bimetal, keeping it open and in a latched position. This integrated design addresses the need for compact, resettable overcurrent protection devices capable of arc suppression in high current DC power applications."
http://www.circuitprotection.com/catalog/mhp_productoverview...