Bourns, Inc. introduced its SE Series miniature Thermal Cutoff (TCO) Mini-Breaker devices that are designed to support 240 W, which meets the upper limit of the USB Power Delivery (PD) standard. The SE Series is Bourns smallest 54 V surface mount Mini-Breaker, with a footprint size of 4.7 mm x 2.8 mm and a height of only 1.23 […]
circuit breaker/interruption
How to analyze and manage inrush current
Inrush current represents one of the most common yet overlooked challenges in power electronics design. These sudden current surges can exceed normal operating levels by 10 to 100 times, lasting only milliseconds but carrying enough energy to damage components or trigger unwanted circuit breaker trips that frustrate users and compromise system reliability. Inrush characteristics by […]
Miniature circuit breakers meet requirements for high voltage applications
c3controls has launched a new line of Direct Current (DC) Miniature Circuit Breakers (MCBs), specifically designed for higher voltage applications with DC currents. The new line of Series 1110 DC MCBs feature an industry-best rating of 250V DC per-pole, far greater than the highest per-pole ratings currently available from comparable DC MCBs, which top out […]
TTape: A simple way to monitor Li-ion battery-pack temperature
A set of temperature-triggered switches alerts you to hot batteries. Li-ion batteries can get hot, which can cause failures or worse in the products they power. Thus, it’s important to monitor their temperature and act before damage occurs. You can monitor temperature with a set of thermocouples, scan them, and write software to produce an […]
Surface-mount low-current circuit breaker doubles as a thermal cutoff
Bourns, Inc. announced its smallest surface mount mini-breaker TCO device. The Bourns Model SW mini-breaker has a 4.7 mm x 2.8 mm footprint with a height of just 0.94 mm. Designed to control abnormal, excessive temperature virtually instantaneously, up to rated limits, the Model SW mini-breaker is an optimal overtemperature protection solution for a wide range of applications that include […]
Design tips for high-voltage protection in EVs and hybrids
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 […]
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 […]
