A shunt is often treated as a simple resistor: pass current through it, measure the voltage, divide by resistance. If the shunt is properly selected, correctly wired in a four-terminal configuration, ...
A high-voltage DC contactor's datasheet current rating is established under defined test conditions—typically a specific ambient temperature, a specified mounting arrangement, and unobstructed airflow...
Installing a shunt correctly is just as important as selecting the right one. A precision shunt can deliver excellent accuracy on the bench, but poor installation—wrong connection method, inadequate t...
Contact welding is one of the most serious failure modes in a DC contactor. When the main contacts weld together, the contactor cannot open—even when the coil is de-energized. The circuit remains clos...
A circuit breaker that keeps tripping is one of the most common complaints in electrical systems—and one of the most frustrating. The breaker is doing its job by interrupting the circuit, but repeated...
Battery energy storage systems (ESS) rely on reliable switching components to connect and disconnect battery strings, manage pre-charge sequences, and isolate faults. High voltage DC contactors are ce...
Exhibition: The Battery Show North America & Electric & Hybrid Vehicle Technology Expo 2026
Venue: Huntington Place, 1 Washington Boulevard, Detroit, MI 48226, USA
Date: October 12–15, 2026...
A shunt is a precision resistor used to measure direct current by producing a voltage drop proportional to the current flowing through it. While shunts are known for their reliability and long servi...
A circuit breaker is a critical component in any electrical system, providing overcurrent and short-circuit protection. Among the various types available, hydraulic circuit breakers—also known as hydr...
Proper installation and wiring of a DC contactor is just as important as selecting the right model for your application. Even a correctly specified contactor can fail prematurely if it is mounted impr...
Selecting the right DC contactor is one of the most critical decisions in designing or maintaining a high-power DC system. The wrong choice can lead to contact welding, premature failure, or even sa...
In high voltage DC systems, connecting a discharged capacitor bank directly to the supply can cause a massive inrush current that welds contactor contacts or damages downstream components. A pre-cha...
Contact resistance on a high voltage DC contactor directly affects its efficiency and safety. When resistance exceeds the manufacturer’s specified limit—typically around 0.2 mΩ to 0.5 mΩ for new uni...
DC contactors control high-current circuits in electric vehicles, photovoltaic energy storage systems, forklifts, and communication power supplies. When one fails unexpectedly, the consequences range ...
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