item is moderately rugged; test data document A81349-mil-r-83726; 10 amps; 40 sec delay; 28 vdc i/p; 1.025 in. max w; 1.718 in. max lg; 1.010 in. max ht; pin terminals; 3 0.150 in. wd mtg slots spaced on corners of isosceles triangle spaced 1.396 in. lg x 0.625 in. w