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Description

Time Mark 257BMThe Model 257 continuously monitors 3 phase power lines for abnormal conditions. When properly adjusted, the Model 257 monitor will detect phase loss on a loaded motor even when regenerated voltage is present. This device consists of a solid state voltage and phase angle sensing circuit, driving an electromechanical relay. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de energize the

662917001671

and Canada) (For use in a Pollution Degree 2 Environment)

Models 333 and 363 are UL Recognized and CSA Certified

98069402 Brand

Unique Features Digital Input Timer Warranty 5 YEARS Warranty Details This product is warranted to be free from defects inmaterials and workmanship

98056006 Brand

98094302 Brand

⚫ 10 Amp Relay Contacts

-20° to +131° F Humidity tolerance 0 -97% w/o condensation Enclosure material ABS plastic cover Mounting 8-pin socket ( **sold separately) Weight 5 oz Agency approvals UL Recognized* and CSA Certified*Conditionsof acceptability:(1) the 380V and 480V versions must be used with a UL Recognized 600VACsocket

Typical Application Dimensions

The Model 2681 is available in AC or DC versions

Professional

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