Essentially a heavy-duty version of a relay, a contactor is typically controlled by a circuit that has far less power than a switched circuit. While considered a special type of relay, the essential difference between a relay and a contactor is that a contactor is used for applications with higher current carrying capacity, while relays are used for lower current applications. Our electrical contactors are typically fitted with a normally open (NO) contact and they suppress the arc that is produced when interrupting heavy motor currents. Electrical contactors can handle currents of over 5000 amperes and high power over 100 kW. While there are various types of contactors, the most common application is high-current load. We have extensive capabilities in designing and manufacturing contactors for a wide variety of applications, including HVAC, power supply, locomotives, elevator control and motor controls, aerospace and defense, hybrid cars, electric cars, and fuel cell vehicles, as well as EV charging systems. Among our portfolio of contactor brands are some of the more respected names in the high performance switching industry, including Potter & Brumfield, HARTMAN, KILOVAC, and PRODUCTS UNLIMITED.
Hermetically sealed and intrinsically safe, TE Connectivity AMP+ high voltage contactors provide fast and reliable switching of the high voltage battery to the vehicle system in hybrid and electric vehicles. The AMP+ high voltage contactor 500-500L offers 900 VDC and 500 Amps continuous current carrying capabilities in a compact package. Capable of 2000 Amp interrupt at 320 VDC. Evolved from fighter jet technology, AMP+ high voltage contactors reliably provide current switching capability in harsh and explosive operating environments with no oxidation or contamination of contacts during long periods of non-operation. 12kV of isolation between open contacts increase battery system robustness. The AMP+ EVC 500 is designed with an optional built micro-controller or timer based coil economizer; the AMP+ EVC 500L is designed with a 12V coil requiring no external economizer. Both are available with an optional auxiliary switch to monitor contact position.