Allen-bradley 592-eedc ser.c three phase overload relay savs20p3 What does the "4-20" in

What does the "4-20" in the model number signify

1440000700007888

svp u2 101545

Multi-Channel Support: Supports simultaneous data communication on multiple channels

Allen-bradley 592-eedc ser.c three phase overload relay savs20p3 What does the "4-20" inAllen bradley 592 eedc ser. c three phase overload relay allen bradley a b cat: 592 eedc three phase overload relay ser: c cur. range (3)3. 2. 16 trip class 10. 30 power (t1 t2 t3)600 vmax #6 awg max (25mm) 22 lb in(2. 5 n m) control(95 98) b600 #24 #10 awg(0 5 4mm) 5 lb in(0. 55 n m) 75c cu wire only trip rating is 120% of fla ui=690v en60947 4 1 en60947 5 1 czx e1 plus 40751 256 52 40751 251 68 3cz21703c 40751 178 class 10,15,20,30 current range: 3.