design features & performance Snap-Lock limit switches have separate enclosures within a single housing for the electrical contacts and terminals on one side and latch bars, rockers and other parts of the operating mechanism on the other side. The snap-lock action ensures a quick-make and quick-break of contacts together with locking in either open or closed position. These switches are heavy duty, machine tool type with isolated poles, double throw, butt type contacts. Enclosures are water, oil and dust tight and meet NEMA Type 1, 4, and 13 requirements. provide Separate Enclosures for Mechanical and Electrical Sides Electrical Side Mechanical Side The electrical side, completely separated from the The contacts are positively maintained until the mechanical side, provides ample wiring space and latch bar is disengaged by the return travel of the readily accessible terminal screws in the molded lever to reset the switch. The return spring serves contact blocks. The contact lever carries self-wip- to reset the switch automatically to its original ing silver-alloy contacts and is connected directly position when the force on the operating lever is by a shaft to the latch bar on the mechanical side. removed, but with spring removed the operating Water and oil tight enclosures are assured by the lever will remain in either position as actuated. use of proper gasket materials. 18 www.namcocontrols.com rOCKEr TYpE SwiTCHES rOCKEr TYpE limiT SwiTCHES Ea040/060/080 1N.O. - 1N.C. 1-800-nAMtEcH rOCKEr TYpE SwiTCHES ® SNap-lOCK Ea040/060/080 1 N.O. - 1 N.C. catalog numbering System How to read part numbers Always order Switch and Operating Lever as SEPARATE ITEMS and use the Ordering Number listed. Refer to Series EL for Operating Levers. EXAMPLE: To order a Standard Snap-Lock Switch and the operating lever considered as standard, use the catalog numbers as follows: • 1 No. EA080-11100 Snap-Lock Switch • 1 No. EL010-53420 Operating Lever Assembly Position 6 Position 7 Position 8 Position 9 Series EAo8o Position 10 Standard EA040 – 11100 Product Variation Product Variation Enclosures Denotes Switch Action Mounting and Shaft Position EA060 – 21100 Variation Variation Enclosure Denotes Switch Action (CW or CCW) Mounting and Shaft Position EA080 – 11300 Product Variation Product Variation Enclosure Series EAo6o Denotes Switch Action Short travel Mounting and Shaft Position position 6 1 Standard Front Shaft 7 Standard Front and Back Shafts 2 Wide Front Shaft 8 Wide Front and Back Shafts 4 Standard Reverse Shaft 0 Special 5 Wide Reverse Shaft position 7 1 CW 3 Without Spring 2 CCW 9 Special position 8 1 Standard Enclosure 5 Standard Housing, Plastic Cover 2 Epoxy Sealed Switch with Cable 6 Sealed Switch with Connector 3 Extreme Environment 9 Special 4 Tandem position 9 & 10 Denotes Product Variation Series EA040 Note: The above chart is designed to help identify an existing model number. It is not neutral position intended to be used to select a model number. 19 D operational data CCW CW Single pole, double break, double C C throw, heavy duty limit switch A having mechanical travel of 10° to B B trip and with one normally open and one normally closed circuit. Can be furnished with standard and style 1 mountings. A. Pre-Travel ....................................... 10° B. Differential Travel ............................. 8° C. Recommended Travel .................... 13° D. Total Travel .................................... 38° E. Max. Torque During Pre-Travel 14 Lb-In F. Max. Torque at Total Travel ..… 38 Lb-In G. Weight: ...................... Approx. 2.3 Lbs. dimensions and Mounting 260 2. 05 260 D I A . 4 H O L E S 1.43 48 SERRATIONS D I A 4 H O L E S 255 255 1.43 .134 EQUALLY SPACED .495/.490 O.D. .41 .94 .94 .53 .56 .66 4. 9 4 4. 8 4 2. 6 2 5 2. 4 3 7 4. 2 1 8 4. 9 4 .93 1.34 2. 8 1 2 1.56 .22 1.56 1. 8 1 2 .22 2.55 MAX. 3.25 2.25 2.55 MAX. 1/4-20 UNC-2B 2.38 1/ 2 -1 4 NPT 50 DEEP HOLES Wide Mounting plate long Mounting plate ORDERING INFO ORDERING NUMBERS MAINTAINED TYPE MOUNTING ROTATION CW ROTATION CCW (WITHOUT RETURN SPRING) LONG MOUNTING EA080-11100 EA080-12100 EA080-13100 WIDE MOUNTING EA080-21100 EA080-22100 EA080-23100 contact configurations FOR B D B D D FOR B D B CCW CW A C A C C C A A SWITCH SWITCH INITIAL CCW CW INITIAL 20 A D www.namcocontrols.com rOCKEr TYpE SwiTCHES rOCKEr TYpE limiT SwiTCHES Ea080 Standard 1-800-nAMtEcH rOCKEr TYpE SwiTCHES ® SNap-lOCK Ea080 1 N.O. - 1 N.C. Specifications Heavy Duty, Machine Tool Type, Single Pole, Continuous Current Rating - Amperes 75-100% Power Factor Double Throw, Quick Make, Quick Break, Butt External Lever is Adjustable by 7˚30' Type, NEMA Form “Z” Contacts. Volts AC DC Increments thru 167˚ 125 20 5 Enclosure is Water, Oil and Dust Tight. Meets 250 15 1.5 FORM Z - A Form Z contact arrangement is one (NEMA) 1, 4, & 13 Requirements. 480 10 which has single-pole double-throw contacts 600 5 Torque Necessary for Operation of Switch 14 in. with four terminals - two for normally open and lb. (Without Return Spring, Item 25, 5 in. lb.) two for normally closed. The function of this Ambient Temperature: -20˚C to + 90˚C arrangement is to open one circuit and close the other. (NEMA Standard 11-12-1970). for Hazardous location requirements, see EA880 Series. parts list 19 2 34 27 12 20 21 26 19B 15 18 31 10 25 19A 22 17 16 30 32 14 36 23 28 24 13 33 3 1 4 ITEM NO. DESCRIPTION QTY. ITEM NO. DESCRIPTION QTY. 1 HOUSING ASSY. 1 21 ROLL PIN 1 2 BUSHING 1 22 LATCH 2 3 BUSHING 1 23 LATCH SPRING 2 4 CONTACT BLOCK 1 24 LATCH RETAINING RING 2 10 END INSULATOR 1 25 RETURN SPRING 1 12 CONTACT LEVER ASSY. 1 26 PIPE PLUG 1 13 ROCKER 1 27 "O" - RING 1 14 ROLL PIN 1 28 TOP COVER 1 LEVER SHAFT ASSY. (INCLUDES ITEMS 15 1 19, 19A, 19B, 20 & 21) 30 TOP COVER GASKET 1 16 ROLLER 1 31 TOP COVER SCREW 4 17 ROLLER SLIDE 1 32 BOTTOM COVER 1 18 ROLLER SLIDE SPRING 1 19 LEVER SHAFT 1 33 BOTTOM COVER GASKET 1 19A LEVER 1 34 BOTTOM COVER SCREW 7 19B SPRING LEVER 1 36 SCREW 2 21 20 TORSION SPRING 1