Manufacturers
NAMCO CONTROLS EA770
Description
Namco Controls EA770 Series Single Pole, Super Sealed, Butt Contacts Limit Switches
Part Number
EA770
Price
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Manufacturer
NAMCO CONTROLS
Lead Time
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Category
PRODUCTS - E
Datasheet
Namco-EA760-Series-Single-Pole-Super-Sealed-Limit-Switches-datasheet1-1131873187.pdf
49 KiB
Extracted Text
Single Pole Limit Butt Standard Environment Contacts (Super Sealed) Switches Wide range of operation...modular • Multiple Contacts — SPDT construction...practical flexibility. • Epoxy Sealed The Series EA770 Super Sealed Water & Oil Tight Snap-Lock Limit • Generous Overtravel Switches are the “ultimate” of the Options Available • Heavy Duty Cam Operated industry. By incorporating the moisture seal with these switches, trouble caused • Low temperature (-40°C to +90°C) • Flexibility of Motion CW, by water, soluble oils or condensation components and lubricants. CCW and CW/CCW has been eliminated. The scope of • A variety of levers can be ordered models is tailored to meet today’s rugged from Namco Controls Series EL. requirements...there is a model of size NOTE: Levers must be ordered as and type to meet virtually all demands. separate item. See pages 294-301. Besides covering all functional • Basic design permits mounting from requirements, this line is designed to either side or back. Style L or W meet practically every condition of mounting plates, for back mounting. installation. These Snap-Lock Switches provide reliable “machine-life” service and have the stamina to operate under unusual conditions...at the same time giving millions of consistently fast, accurate contacts. Here are a few of the outstanding features built into the switch for maxi- mum performance. Generous overtravel and by-pass, flexibility of motion, fast contact action, and Form Z contact arrangement. EA770 Single Pole 1 N.O. - 1 N.C. / Butt Contacts / Cam Action Angle Angle Angle Angle Angle Angle Standard Wide Long A B C D E F Mounting Mounting Mounting Dir. Of Trip Reset Recom. Total Min. Travel Overall Torque Contact Model No. Model No. Model No. Operation Travel Travel Travel Travel to Maintain Travel (inch lbs) Config. STANDARD TRAVEL EA770-10000 EA770-40000 EA770-70000 CW 18° 14° 30° 90° -- 15 A EA770-10001 EA770-40001 EA770-70001 CCW 18° 14° 30° 90° -- 15 B EA770-10100 EA770-40100 EA770-70100 CW/CCW 18° 14° 30° 90° -- 15 C See Operating Levers Section Namco • 2013 West Meeting Street • Lancaster, SC 29720 • 1-803-286-8491 • FAX: 1-800-678-6263 252 Limit Switches Common Switch Characteristics Dimensions and Mounting EA770 SINGLE POLE, STANDARD (SUPER-SEALED) ENVIRONMENT, STANDARD MOUNTING PLATE BUTT CONTACTS NEMA Enclosure Type 1, 4, 6, 13 3.19" 48 Serrations (81.0) Equally Spaced 0.92" 0.50" 0.495/0.490 O.D. Housing Material Zinc (23.4) (12.7) Ambient Temperature Range* -20°C to +90°C 1.06" 1.31" 1.06" (26.9) (33.3) (26.9) Shipping Weight 3 lbs. approx. 0.44" Lever Adjustment 7°30' Increments Thru 360° (11.1) 4.13" 0.69" (104.9) Contacts Butt, Silver Alloy, Form Z (17.5) 3.06" 5.19" (77.7) Lead Wires** 4 lead wires, part no. shown (131.8) 1/4–20 Thd. 2.63" is for 15 ft. 0.38 Deep 3.00" (66.8) Four Holes (76.2) *Some low temperature (-40°C to +90°C) versions available. Contact factory. **Available in increments of 5 ft. Contact factory. 0.13" (3.3) 0.75"-14-N.P.S. 0.88" for EA770-1, 4, 7 (22.4) 0.02" 1.59" 1.13" 2.25" (0.51) Continuous Current Rating - Amperes (40.4) (28.4) 2.50" (57.2) (63.5) 2.28" (57.9) VOLTAGE AC DC 125 20.0 5.0 WIDE MOUNTING PLATE 250 15.0 1.5 0.260/0.255 Dia. 480 10.0 - Four Holes 0.28" (7.1) 600 5.0 - 0.53" 75-100% Power Factor (13.5) 2.44" (62.0) Contact Configurations CIRCUIT A 3.00" (76.2) CW Initial CCW D C B A 2.81" 0.22" (71.4) (5.6) 3.25" CIRCUIT B (82.6) CW Initial CCW LONG MOUNTING PLATE D C 0.260/0.255 Dia. B A Four Holes 0.41" (10.4) 0.66" CIRCUIT C (16.8) CW Initial CCW D C 4.22" (107.2) B A 4.84" (122.9) Operational Data Drawings C C 1.81" 0.22" A (46.0) A (5.6) B D D 2.25" B (57.2) 2013 West Meeting Street • Lancaster, SC 29720 1-803-286-8491 • FAX: 1-800-678-6263 www.namcocontrols.com For technical assistance, call 1-800-NAMTECH 253 Limit Switches
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