INDUSTRIAL - ENVIRONMENTALLY SEALED SWITCHES Series - 8520-8522, 8526-8528 Environmentally Sealed Toggle Switches UL Recognized and CSA Certified FEATURES SPECIFICATIONS CURRENT RATINGS Maximum Horsepower s Completel sealed agaiQ st dust, s : atertight seal per 0,/ S7 108E Amperes 1 Phase 3 Phase moisture, and other contaminants and designed to meet IP68 s 8/ and CSA approY ed s 7 hermoset molding materials meet s One hole mounted bushing for eas flame retardant requirements No. of Catalog installation s recogni ed and CSA certified per Poles Number 125V 250V 125VAC 250VAC 125/250 VAC s 0 ulti circuits offered specifications listed below 1 8520 18 9 1/4 1/2 s 2 3 position Z ith maintained and s 7 emperature 5 ange 50 F to 150 F momentary action 46 C to 66 C 2 8521 18 9 1/2 1 s 0 olded in terminal inserts and s / ife 20,000 operations at rated load terminal numbers 40,000 operations mechanical life 4 8522 18 9 1/2 1 1 6,000 operations at HP ratings s 1, 2 and 4 pole circuitry per UL and CSA requirements 8526 thru s % ushing 15/32 32 thread 1, 2, 4 8528 18 9 SELECTION TABLE FLUSH TERMINAL SCREWS 8520/8526 8521/8527 8522/8528 CIRCUIT WITH LEVER IN . ONE POLE FOUR POLE TWO POLE Up Center Down Position Position Position (Keyway) Catalog Catalog Catalog Number Number Number ON OFF ON 8520K1 8521K1 8522K1 ON NONE OFF K9 K9 K9 ON NONE ON K4 K4 K4 ON NONE ON* 8526K5 8527K5 8528K5 * ON OFF ON* K2 K2 K2 ON OFF ON* 8526K3 8527K3 8528K3 * Momentary contact. See page A71 for circuit diagrams. UL & CSA Approval Numbers UL - Where devices are UL recognized, recognition is listed under file number E15346 Guide card number is WOYR2. CSA = Where devices are CSA certified, certification number is LR40068, class number 6241. A5 8/INDUSTRIAL - ENVIRONMENTALLY SEALED SWITCHES Series - 8520-8522, 8526-8528 Environmentally Sealed Toggle Switches UL Recognized and CSA Certified MOUNTING DIMENSIONS - ONE POLE / 8520, 8526 0.432 10,97 KEYWAY 0.240 DIA. 33 6,10 16.5 15/32- 32 UN-2A THREAD TO WITHIN 0.060 1,52 OF SHOULDER 6- 32 TERMINALSCREW WITHINTERNAL TOOTH LOCKWASHER(SEMS) 0.380 0.380 9,65 9,65 1.270 MAX 32,26 Terminal Identification MOUNTING DIMENSIONS - TWO POLE / 8521, 8527 .432 10,97 KEYWAY .240 DIA. 33 6,10 16.5 15/32-32 UN-2A THREAD TO WITHIN .060 1,52 OF SHOULDER 6-32 TERMINALSCREW WITH INTERNAL TOOTH LOCKWASHER (SEMS) .380 .380 9,65 9,65 STANDARD 1.340 MAX 34,04 0.00 = inches 0,0 = mm Terminal Identification Non-functional terminals not supplied. Mounting dimensions for reference only. A6 0.250 6.35 .130 .250 3,30 6,35 1 2 14 3 25 36 0.635 1.19 0.470 0.690 0.076 .130 16,13 30,23 11,94 17,53 1,93 .380 3,30 MAX 9,65 .076 1.100 .470 .690 MAX 11,94 1,93 27,94 17,53 .910 MAX 1.370 23,11 MAX 34,80