Transfer time is about 10 msec. The switches feature continuous ratings from 20 to 200 A at 600 V. Some configurations allow for four positions and 12 poles. To prevent contamination, switching takes place within the molded phenolic disks. Double-wiping, low-resistance contacts minimize heating and stationary contacts, extended outside the disks, serve as connecting terminals. Most models have a four-hole mount configuration; a single-hole mount is available. The Series 107 is the largest model and can handle current up to 600 A/600 Vac. Preconfigured application-specific versions include voltmeter-transfer, ammeter-transfer , three-phase reversing, and changeover switches.
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