PolySwitch™ LVR series resettable circuit protection devices are designed to help protect electric motors and transformers used in commercial and home appliances from failures caused by mechanical overloads, overheating, stall, lost neutral, and other potentially damaging conditions. The series includes components rated for line voltages of 120 V AC and 240 V AC, for up to 2 A of operating current at 20°C. The devices offer low resistance, fast time-to-trip, low profile, and resettable functionality to help circuit designers provide a safe and dependable product, comply with regulatory agency requirements and reduce warranty repair costs.
The supplier says that, unlike single-use fuses, its resettable devices do not require replacement after a fault event. After the overcurrent condition is eliminated and power has been removed, the circuit is restored to normal operating condition. Compared to bimetal breakers, the devices are designed to offer more flexibility, longer lifespan and lower electromagnetic interference.
The devices’ resettable functionality and latching attributes are said to make them a reliable, cost-effective circuit protection solution for both intermittent and continuous-operation motor applications. The RoHS-compliant devices are also compliant with the UL 1434 standard, and are compatible with lead-free solders and high-volume assembly processes. Raychem Circuit Protection, a business unit of Tyco Electronics, www.circuitprotection.com