2a single mounting facility thread class 4.280" overall length 3.500" overall width relay will trip in approx. 1/2 second. relay will not trip unless any phase current exceeds 3.18 amps unc single mounting facility thread series
2b single mounting facility thread class 3.440" overall length 2.660" overall width time delay will not operate if overvoltage is not sustained for 300 milliseconds; time delay must pull in within 1.0 second after voltage reaches unc single mounting facility thread series
2a single mounting facility thread class 0.978" overall length 0.734" overall width 48 single mounting facility thread quantity per inch un single mounting facility thread series