2 | evtd C ev series varistor (thermal disconnect) evtd technology (thermally protected varistor) features ? high energy handling capability ? wide voltage range available: 50vac C 550vac ? multiple diagnostic options (micro-switch locations both on top & bottom, on top only or on bottom only) ? industry standard footprint ? ul1449 and cul 3rd edition recognized. file #e321567*. all values presently recognized except evtd34v300k and micro-switch location option c (in position (6) see below part numbering system), which is pending. ? rohs compliant ? exceeds industry standard operating and storage temperatures for this type of device. rated at -40oc to +85o. ? patent pending. except for option c, which is pending. (see below in position (6) part numbering system). (1) series evtd= ev series varistor td thermal disconnect (2) disk size 34 = 34mm (3) type v = high current ev varistor series (4) ac rms voltage rating 50 = 50vac (5) tolerance k = 10% (6) micro-switch location option nil = top and bottom a = top only b = bottom only c = top center only (7) micro-switch lead length option (for c location only) nil = standard long lead (11mm 1mm) s = short lead (5mm 0.5mm) (8) micro-switch function option nil = normally open c = normally closed part numbering system evtd 34 v 50 k a s c CCCC CC CC CC CC CC CC CC (1) (2) (3) (4) (5) (6) (7) (8) *note: recognized and approved to ul1449 as a 4 surge protective device component assembly for type 2 applications, and not listed as a surge protective device (this is pending). evtds are intended, in conjunction with appropriate enclosure design, to help facilitate tvss module compliance to ul1449. under extreme abnormal over-voltage conditions, some units will exhibit substantial heating, arcing and venting prior to opening. modules should be designed to contain this possibility. evtd C ev s eries v arist or (t hermal d isconnect ) world products, llc 19654 eighth street east, sonoma, ca 95476 | phone (707) 996-5201 | fax (707) 996-3380 | www.worldproducts.com rev. 2.0
evtd C ev series varistor (thermal disconnect) | 3 evtd series electrical characteristics part number maximum continuous rated voltage varistor voltage @1.0 ma (dc) maximum clamping voltage maximum peak current (8/20s ka) maximum energy ac rms volts dc volts min volts nominal max volts vc (volts) ip (amps) 15 pulses* 1 pulse 10/1000s (joule) evtd34v50k 50 65 74 82 90 135 300 20 45 156 evtd34v60k 60 85 90 100 110 165 300 20 45 195 evtd34v75k 75 100 108 120 132 200 300 20 45 235 EVTD34V150K 150 200 222 246 270 395 300 20 50 480 evtd34v180k 180 230 256 283 310 470 300 20 50 540 evtd34v250k 250 320 371 410 449 650 300 20 50 830 evtd34v275k 275 350 410 453 496 710 300 20 50 920 evtd34v300k 300 385 423 471 517 775 300 20 50 1000 evtd34v320k 320 415 459 510 561 845 300 20 50 1060 evtd34v385k 385 505 558 620 682 1025 300 20 50 1250 evtd34v420k 420 560 612 680 748 1120 300 20 50 1250 evtd34v460k 460 615 675 750 825 1240 300 20 50 1280 evtd34v510k 510 670 738 820 902 1355 300 20 50 1395 evtd34v550k 550 745 819 910 1001 1500 300 20 50 1475 *i(n) sequencing according to ul1449 3rd edition. 55 9.4 31 2 3.9 1 com 2 no 3 nc 3.9 8.7 9.7 12.9 55 11.25 25.5 3.15 31 2 4.25 1 com 2 no 3 nc ** micro-switch location options a & b only. micro-switch (bottom) dimensions (mm) l 43.9 w 42.8 w1 41 t 16 f 25.5 l1 17.8 note: tolerance for all dimensions are +/- 1mm unless otherwise noted. *note: micro-switches are intended for monitoring of the internal thermal disconnect. micro-switches are rated at 125vac 1a max. t 12.1 (nom) 0.4 (nom) 0.5 .05 3.15 0.5 9.7 12 3.0 0.5 7 l1 40.2 l w1 f w 2.5 0.5 3.9 0.5 1.2 0. 5 55 .89 .05 2.7 0.5 micro-switch (top) evtd C ev s eries v arist or (t hermal d isconnect ) world products, llc 19654 eighth street east, sonoma, ca 95476 | phone (707) 996-5201 | fax (707) 996-3380 | www.worldproducts.com rev. 2.0
4 | evtd C ev series varistor (thermal disconnect) micro-switch location option c only. 16 5.85 0.5 3.15 9.7 12 ?1.0 5.85 18.86 15.8 40.2 43.9 25.5 42.8 2.5 1.2 5.08 11* 7 evtd34vxxk note: dimensions (mm), tolerances are 1mm unless otherwise noted. * also available 5mm 0.5mm. see part numbering system for suffx code. evtd C ev s eries v arist or (t hermal d isconnect ) world products, llc 19654 eighth street east, sonoma, ca 95476 | phone (707) 996-5201 | fax (707) 996-3380 | www.worldproducts.com rev. 2.0
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