VFD Motors

HVAC fans and compressors use variable frequency drive (VFD) motors. Ensuring the ac motors speed up and slow down predictably, safely, and efficiently prolongs equipment life. Littelfuse offers many electronic components to achieve that goal, including power bridges for current switching, transformers for ground fault protection, and motor protection relays technicians can monitor via smartphone.

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技术:
产品系列:JLS, JLLS, LDC, 504, 505, 607
功能与特色:Extremely current-limiting; small footprint; 200 kA interrupting rating; smallest available package
特色:Reduces damage to equipment caused by heating and magnetic effects of short circuit currents; compact design

技术:
产品系列:TMOV, UltraMOV
功能与特色:UL-recognized Type 4 surge protection devices; integrated thermal disconnect
特色:Integrated thermal disconnect enhances safety by disconnecting during MOV EOL caused by continuous abnormal overvoltage from miswiring or loss of neutral

技术:
产品系列:
功能与特色:Planar passivated chips; very low leakage current and forward voltage drop; improved thermal behavior; high commutation robustness
特色:Small footprint; multiple package options (high-voltage, isolated, and standard packages)

技术:
产品系列:
功能与特色:Sonic diode for fast and soft recovery
特色:Easy to parallel due to positive temperature coefficient

技术:
产品系列:L50QS
功能与特色:Extremely Current Limiting, Universal Blade Mounting
特色:Best-in-class DC performance, reduces peak let-through current and energy protecting power semiconductor components. Flexible mounting offering quick and easy field replacement

技术:
产品系列:
功能与特色:Rugged XPT design with thin wafer technology
特色:Short circuit rated for 10 ?sec; low gate charge; low EMI and competitive low VCE(SAT)

技术:
产品系列:LSIC1MO170E0750
功能与特色:Optimized for high-frequency applications; extremely low gate charge and output capacitance; ultra-low on-resistance
特色:Higher switching frequency; higher efficiency; increased robustness; smaller die size per voltage/current rating