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Siemens SMFH17 is a Class SMF heater element for overload relays, providing a standard trip range of 0.79 to 0.85 A for full-load motor protection. It is intended for manual motor control and manual starter applications and functions as a thermal unit that opens contacts when current-induced heating reaches the trip threshold, interrupting power to downstream equipment.
Class SMF heater element for overload relays; 0.79–0.85 A trip range; for manual motor control and manual starters
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