Specifications 1. Enclosure meets NEMA Types 4, 4X, 6, 6P, 7, Class I, Groups C and D; and Type 9, Class II, Groups E, F, and G. 2. Contacts made of silver alloy. Contact shifting mechanism is locked in position by the latches until switch lever is actuated. 3. Standard Temperature Range: -20˚C to +90˚C. 4. Operating lever is adjustable to any required position. 5. Operating Lever Angles (travel either clockwise or counterclockwise) maximum degrees of trip travel, reset travel, as well as total lever travel, are determined by the cam selected. 6. Operating Torques -- Trip Torque varies from 15 to 35 lb. in. 7. Continuous Current Ratings -- Amperes Volts AC DC 125 20 5 250 15 1.5 1 n.o. - 1 n.c. 480 10 600 5 2 n.o. - 2 n.c. 75-100% Power Factor 3 n.o. - 3 n.c. 8. Form Z contact arrangement. • nEMA rAtEd for HAZArdouS locAtion • 1 n.o. - 1 n.c., 2 n.o. - 2 n.c., 3 n.o. - 3 n.c. • bronZE, or AluMinuM HouSinG • GEnErouS ovErtrAvEl DIMENSIONS (in.) • HEAvy duty cAM opErAtEd CONDUIT • flEXibility of Motion, cW And ccW TYPE TOTAL MOUNT OPENING CONTACT HEIGHT (in.) HEIGHT (in.) • AMplE WirinG SpAcE NPT SErvicE conditionS – The Series EA-800 hazardous A B C location limit switches operate reliably where gases, 1 N.O. - 1 N.C. 3/4" 14 6.47 5.422 vapors, and dust are potential explosion hazards. 2 N.O. - 2 N.C. 1" 11 1/2 8.5 7.578 The switch bodies are carefully engineered to resist 3 N.O. - 3 N.C. 1 1/4" 11 1/2 10.56 9.672 corrosion. 3.64 0.38 .40 3 HOLES (92.4) (9.6) 0.38 0.62 (9.6) ruGGEd conStruction – Approved spark-proof (15.7) bronze, or aluminum housings can withstand internal 1.61 and external gas explosions. Silver alloy butt contact (40.8) arrangement is standard. Wiring space is ample for up to size 12 wire. B C 48 SERRATIONS EQUALLY SPACED provEn pErforMAncE – Cycle life is in the .495/.490 O.D. millions, when operated at the rated current, voltage, and temperature. Standard switches have maximum A ambient temperature ratings of 90°C continuous. 2.OO 3.37 (50.8) (85.7) Switches can also be specially ordered with either 4.60 4.01 (116.8) (101.8) -40°C or +150°C capabilities. optionS AvAilAblE: lEvErS AvAilAblE – A variety of levers for hazardous locations limit switches can be ordered from Namco • Maintained and neutral position. Controls Series EL. • High temperature (0° to + 150°C) components and lubricants. plEASE notE: only non-sparking levers should be • Low temperature (-40° to +90°C) components used in hazardous locations. See pages 68-75. and lubricants. 60 • Belt mis-alignment. Not all models are UL approved. www.namcocontrols.com SpECial fUNCTiON SwiTCHES rOCKEr TYpE SwiTCHES Cam OpEraTEd HazardOUS fUNCTiON limiT SwiTCHES Ea800 1-800-nAMtEcH SpECial fUNCTiON SwiTCHES ® SNap-lOCK Ea800 D D D CW E E E F C F C F C B B B A A A ordering information HOUSING CW CONTACTS CIRCUITS BRONZE ALUMINUM OPERATION CW INITIA L CCW ONLY 1 N.O. EA800-10040 EA800-10050 D C B A (Combinations 1 N.C. WGT. 12 LB. 6 LB. B-1/B-2 Cam) CW INITIA L CCW H G Contacts transfer 2 N.O. EA800-20040 EA800-20050 E F A. Trip Travel................................................ 18˚ when lever is D C 2 N.C. WGT. 16 LB. 7 LB. A B B. Reset Travel.............................................. 14˚ operated CW. CW INITIA L CCW C. Recommended Travel............................... 30˚ Lever can be M L D. Maximum Travel Available........................ 90˚ K J operated CCW 3 N.O. EA800-30040 EA800-30050 H G Torque 1 N.O. - 1 N.C. .............15 but contacts will F E 3 N.C. EGT. 19 LB. 8 LB. (Inch Lbs.) 2 N.O. - 2 N.C. .............27 D C not transfer. B A 3 N.O. - 3 N.C. ............ 33 HOUSING CONTACTS CIRCUITS CCW BRONZE ALUMINUM OPERATION CW INITIA L CCW 1 N.O. EA800-10041 EA800-10051 D C (Combination B A 1 N.C. WGT. 12 LB. 6 LB. B-1/B-2 Cam) CW INITIA L CCW Contacts transfer H G 2 N.O. EA800-20041 EA800-20051 when lever is F E D C A. Trip Travel................................................ 18˚ 2 N.C. WGT. 16 LB. 7 LB. operated CCW. B A B. Reset Travel.............................................. 14˚ Lever can be CW INITIA L CCW C. Recommended Travel............................... 30˚ M L operated CW D. Maximum Travel Available........................ 90˚ K J 3 N.O. EA800-30041 EA800-30051 but contacts will H G Torque 1 N.O. - 1 N.C. .............15 E 3 N.C. F WGT. 19 LB. 8 LB. not transfer. D C (Inch Lbs.) 2 N.O. - 2 N.C. .............27 B A 3 N.O. - 3 N.C. ............ 33 HOUSING CONTACTS CIRCUITS BRONZE ALUMINUM CW & CCW CW INITIA L CCW 1 N.O. EA800-10140 EA800-10150 D C OPERATION B A 1 N.C. WGT. 12 LB. 6 LB. (Combination CW INITIA L CCW B-1/B-2 Cam) H G 2 N.O. EA800-20140 EA800-20450 F E A. Trip Travel................................................ 18˚ Contacts transfer D C 2 N.C. WGT. 16 LB. 7 LB. B A B. Reset Travel.............................................. 14˚ when lever is C. Recommended Travel............................... 30˚ CW INITIA L CCW operated CW or M L D. Maximum Travel Available........................ 90˚ K J CCW. 3 N.O. EA800-30140 EA800-30150 G H Torque 1 N.O. - 1 N.C. .............15 F E 3 N.C. WGT. 19 LB. 8 LB. 2 N.O. - 2 N.C. .............27 (Inch Lbs.) D C B A 3 N.O. - 3 N.C. ............ 33 typical cams b1 Single Action b2 double Action combination b1/b2 cAM The following three operating sequences are built 0 18 0 18 18 into the combination cam used in the standard EA800 switches: B1 Single Action CW, B1 Single Action CCW and B2 Double Action CW & CCW. 1. The contacts function when the lever is operated clockwise. The lever can be operated counterclockwise but the contacts will not operate. 2. The contacts function when the lever is operated Normally open to make (normally closed to Normally open to make (normally closed to counterclockwise. The lever can be operated break) IN ONE DIRECTION ONLY. Lever and break) IN EITHER DIRECTION. Lever and clockwise but the contacts will not operate. cam are spring returned to staring position. cam are spring returned to starting position. 3. The contacts function when the lever is operated Used on Single Action Switches only. clockwise or counterclockwise. 61 B A B A B A E E E F F F C C C D D D CCW