Page 73 of Contactors and Motor Protection by Moeller Electric USA

motor protection from moeller protection solutions to 820a moeller offers an array of motor protection solutions from the modest ze bi-metallic thermal overload relay to our advanced zev electronic motor protector we also offer relays specifically built for motors with ptc thermistors r better protection superior iec designs class 10 protection for modern motors modern motors are built with less metal which means they dissipate less heat this calls for the modern protection offered by iec-style class 10 overload relays they trip in 10 seconds under locked rotor conditions most motor manufacturers today recommend this type of close protection if your application calls for longer run-up times our zw7 current transformer relay or zev programmable relay are an ideal choice ambient temperature compensation test off button automatic manual reset trip indication trip-free release integrated no nc contact many standard features all moeller overload relays come with a host of standard features including phasefailure sensitivity temperature compensation test reset buttons and a trip-free release this safety feature prevents the relay from being held closed during an actual overload worldwide approvals with the benefit of all major approvals motor protection from moeller can be used in virtually every country on the planet feature phase-failure sensitivity temperature compensation auxiliary switch 1 no 1 nc test off button reset button manual auto separate mounting protection for heavy starting duty trip-free release lcd display led display selectable trip time standard features ze zb12 zb32 zb65 z5 zw7 zev withptcs n/a n/a n/a emt 74

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