2Pro AC Devices

By Littelfuse Inc 223

2Pro AC Devices

Littelfuse 2Pro AC family of devices provide integrated overcurrent, overvoltage, and overtemperature circuit protection which helps protect a wide variety of low-power systems against damage caused by overvoltage faults, including lightning strikes, ESD surges, loss of neutral, incorrect input voltage, and power induction. The RoHS-compliant 2Pro AC devices combine a PolySwitch polymeric positive temperature coefficient (PPTC) overcurrent device with a metal oxide varistor (MOV) component into one innovative, thermally-protected device to help provide resettable current limiting for overcurrent protection and voltage clamping during overvoltage events. This single-device approach helps manufacturers meet industry test requirements, reduce component count, and improve equipment reliability. The 2Pro AC family of devices helps provide protection for AC input LED lighting systems, PLC network adapters, cell phone chargers, modem power supplies, AC panel protection modules, AC power meters, white goods, and home and professional appliances.


  • Single overcurrent, overvoltage, and overtemperature protection
  • Resettable overcurrent protection
  • Helps protect varistor and other components from damage caused by loss of neutral or abnormal AC input voltage
  • Normal operating mode: Universal Input voltage range: 85 VAC to 265 VAC
  • Power range: Up to 30 VA for 230 VAC input voltage at 20°C
  • High safe interrupt power: Up to 415 VAC RMS/40 ARMS
  • RoHS compliant


  • Single, small-form-factor device helps to reduce component count and footprint
  • Helps provide a safe failure mode in case of varistor overstress
  • Helps reduce warranty returns
  • Helps equipment comply with UL/IEC 60950/IEC60335
  • Helps equipment comply with:
    • IEC61000-4-5 – Surge immunity test
    • IEC61000-4-4 – Electrical fast transient/burst immunity test
    • IEC61000-4-2 – Electrostatic discharge immunity test
  • Reduces cost by eliminating need for additional fuses or power resistors in the power line
  • Main LED lighting systems
  • PLC network adapters (fast Ethernet, xDSL over the main)
  • Cell phone chargers
  • AC/DC power supplies up to:
    • 150 VA as input power for 240 VAC input voltage
    • 75 VA as input power for 120 VAC input voltage
  • Modem power supplies
  • AC panel protection modules
  • AC Line power supplies
  • AC power meters
  • White goods, appliances, and industrial controls

nuevos productos: