Coil hold-in devices were created specifically to solve the voltage sag problem with control relays and contactor/motor starters. There are two designs of low-cost coil hold-in devices available. Both ...

The SureSwitch contactor, initially designed for air conditioning applications, has been designed with expanded coil voltage to now extend to refrigeration replacements, ranging from 24-240 V to also ...

A. A specific resistance indicates a good holding coil. B. Infinite resistance indicates a relay with an open holding coil. Replace this relay with an identical part. 4. Measure the resistance across ...

Fig. 3 shows the effect of reduced voltage levels on motor windings. If you don't take proactive steps, you could be setting yourself up for serious problems. The magnetic contactor used to turn ...

The general pickup voltage is 9 V and the minimum holding voltage is 1 V. Typical coil current is 500 mA and the minimum holding current is 160 mA. Switching times are fast for a contactor.