The primary goal of EV protective circuits: Keep vehicle occupants safe day-to-day and first-responders protected if the worst happens. Michael Zimmermann, Littelfuse, Inc. The 12-V automotive battery may become a relic of the past as electric vehicles (EV) and hybrid cars gain market share. EVs and hybrid vehicles use battery packs of at least 500-V […]
circuit breaker/interruption
New varistors incorporate built-in thermal disconnect, electric arc shield
The LST Varistor series is constructed with a proprietary thermally protected varistor technology (TMOV) developed by Littelfuse. This new varistor incorporates both a built-in thermal disconnect function and electric arc shield. This combination provides additional robust protection to prevent catastrophic failure and fire hazard even under the extreme circumstances of abnormal overvoltage conditions or varistor […]
Power relays switch up to 300-A loads in vehicular applications
E-T-A power relays are for switching high current loads up to 300 A as well as battery management in buses, trucks, construction machinery, agricultural vehicles and forestry equipment and specialty vehicles. The power relays are made with high-end and corrosion-proof materials, making them extremely robust and able to withstand environmental factors like shock, vibration, water […]
Tech guide details ground fault detection methods
NK Technologies (www.nktechnologies.com) has released a new educational resource for engineers. The Ground Fault Considerations Tech Guide covers a wide range of topics and includes an easy-to-use selection guide, as well as a variety of case studies and application examples. Highlights include: • Ground fault detection basics • Ground fault sensing basics • Consolidated ground […]
Heilind Electronics now stocking Mersen circuit protection products
Heilind Electronics is now stocking circuit protection products from Mersen — a global expert in electrical power and advanced materials. Mersen offers a comprehensive suite of surge protection solutions designed to cover every voltage need within a facility. Most notably, the manufacturer’s Surge-Trap devices feature fail-safe overvoltage protection with industry-leading TPMOV technology. These devices are designed […]
Battery protection devices boost LiP and prismatic battery safety
Littelfuse Inc. had introduced the introduced MHP–TAC (Metal Hybrid PPTC – Thermal Activated Compact) Series Resettable Over-temperature Protection Devices, the latest addition to its line of battery min-breakers. These devices connect a PPTC (Polymeric Positive Temperature Coefficient) device in parallel with a bimetal protector (a resettable thermal cut-off device) to protect the high-capacity lithium-ion polymer […]
New e-commerce site offers current sense shunts and fuse block products
Riedon has announced the industry’s first e-commerce site dedicated to the rapid sourcing of current sense shunt and fuse block product lines. Shunts.com is designed to significantly simplify the identification and purchase of shunts and fuse blocks for use in a wide variety of commercial, industrial, aerospace, transportation, instrumentation, renewable energy and medical applications. Orders placed on […]
Ground fault sensor monitors 100-A circuits with large sensing window
NK Technologies released the AGT-FD Series, new ground fault sensors that detect faults to earth from 0 mA to 100 mA and produce an output signal of 0–10 VDC in proportion to the amount of current passing to ground. The output is equal to the RMS value of the earth leakage. The AGT’s sensing window is […]
IP67 splash-proof IEC plug contains its own circuit breaker
SCHURTER enhanced its IEC inlet and circuit breaker power entry module with IP Protection. The DG 11 IP67 splash-proof IEC plugoffers an IEC plug C14/C18 with integrated a device circuit breaker TA35 to meet the requirements of the variety of applications. The DG11 power entry module is IP 67 rated, which prevents ingress of dust […]
Reflowable thermal switch protects power semiconductors against thermal runaway
A particularly compact reflowable thermal switch is designed to provide thermal protection for power semiconductors such as MOSFETs, ICs, IGBTs, TRIACs, and SCRs. Due to their inherent self-reinforcing heat-producing behavior, these semiconductor devices can overheat and go into thermal runaway. The RTS is designed to protect against such overheating by reliably interrupting the circuit precisely […]
