Beckwith Electronics


Hamburg, Illinois 62045
(618) 232-1139
(618) 232-1172 fax

EAO Switch

Technical Information

Soldering Instructions

Correct soldering techniques are important to the reliable operation of EAO switches.

Soldering temperature
A soldering iron with a temperature controlled tip is recornmended. If not available, do not use a soldering iron that is rated more than 15-20 watts. In any circumstance, the iron must never exceed 500°F. Soldering of a terminal should not exceed 5 seconds (IEC 68-2-20, test 2b, method 1A). Excess heat or time will damage switch contacts or draw flux into contact area.

Use of flux
EAO recommends elimination of flux entirely. However, if flux is preferred, use only a small amount. Terminals are gold plated or have Optalloy, assuring easy soldering.

Caution
Use of solvents to clean flux from solder joints may cause contact contamination by leaving flux residues on the contact. The switch element plastic material will not be affected by leaving residues of flux. If a solvent must be used, isopropyl alcohol is recommended.

EAO's printed circuit board components are designed for CFC, aqueous, or non-wash machine soldering applications. If proper procedures are implemented, such as the use of EAO's printed circuit board connectors or vinyl caps to prevent the ingress of contaminants, then reliable soldering will be achieved.

All EAO switch contact blocks are assembled by automated equipment. Contacts and terminals are automatically positioned in the molded base and held in place by a small amount of epoxy resin adhesive. The epoxy not only serves to prevent internal parts from shifting, but also helps to prevent solder flux from entering the switching mechanism. After assembly of the switch is completed, the epoxy is cured in an oven to assure that it is 100% solid. The contact blocks are then checked for contact resistance, operated 100 times, and re-checked. When two or more contact blocks are to be assembled on one actuator, only those switches with the same operate position are selected. This assures that in a multipole application, no one pole will operate before any of the others.

Materials
All switch contact blocks are molded from diallyphtalate, a stable material at high temperature with a low rate of moisture absorption. This provides excellent dimensional stability under all applications and environments. Switch housings and mounting nuts are made of the same material. The same rate of expansion of all components means that under temperature changes, due to lamp heating for example, the switch assembly will not loosen in its mounting.
All styrofoam packaging material is CFC-free.

Mounting switch components EAO strongly recommends the use of special tools designed to help mount and unmount switch components. These tools are listed in the "Accessories" section of this catalog and will prevent damage to lenses, lamps, contact blocks, and other components when used correctly. There is a correct size and shape of mounting hole shown for each switch. The holes often have flats or tabs to prevent rotation, particularly for keylocks and lever switches. Anti-rotation washers are available when round mounting holes musts be used.

Recommended mounting torque
4.50 inch-pounds, nominal
8.75 inch-pounds, maximum

Switch manufacturers often use standard enclosure protection classifications to indicate the ability of switch components to seal out dust and liquids. Commonly used ratings include NEMA (National Electrical Manufacturers Association) and IEC-IP (International Electrotechnical Commission -- Ingress Protection). Although similar, these classifications are not directly comparable and converting from one to the other requires caution.

Common NEMA and IEC-IP ratings for switch products include:
NEMA 4: Intended for indoor or outdoor use primarily to provide a degree of protection against wind blown dust and rain, splashing water, and hose directed water.
NEMA 5: Intended for indoor use primarily to provide a degree of protection against dust and falling dirt.
NEMA 6: Intended for indoor or outdoor use primarily to provide a degree of protection against the entry of water during occasional temporary submersion at a limited depth.
NEMA 13: Intended for indoor use primarily to provide a degree of protection against dust, spraying of water, oil, and noncorrosive coolant.
IP 40: Enclosure protected against dust contamination of solid objects greater than 1 mm.
IP 65: Enclosure protected against all dust contamination; water projected by a nozzle against the enclosure shall have no harmful effect.
IP 67: Enclosure protected against all dust contamination; ingress of water in a harmful quantity shall not be posible when the enclosure is immersed in water under defined conditions of pressure and time.

In general, EAO Switch Corp. feels that IP 40 is similar to NEMA 5. IP 65 is similar to NEMA 4 and 13. IP 67 is similar to NEMA 6. EAO oil & waterproof switches meet both IP 65 and NEMA 4 and 13.

Some Useful Conversion Factors
To convert from	To	Multiply by
millimeters	inches	0.0394
inches	millimeters	25.4
grams	pounds	0.002205
pounds	grams	453.6
grams	newtons	0.01
Fahrenheit	Celsius	(°F-32)x5/9
Celsius	Fahrenheit	(°C x 1.8) +32

Switching Element	Snap Action								Low Level
Available in Series Number:	01/11/14/15 21/30/31/32 41/51/52	02/03	04	18	19	22	61		01/11/14/15 19/21/30/31 41/51/52/99	70	84/92	96	97
							snap-action	slow make
Switch Configuration	1 Form Z double break element per contact block	Form C	Form A or Form B double break element	1 N.O. or 1 N.C.	1 N.O.	Max 2PST N.O. or N.C.	Max 3PST N.O. or N.C.	Max 2PST N.O. or N.C.	Max 2PST N.O. or N.C. 4 bifurcated contacts	1 N.O.	1 N.O.	1PDT Form C	Max 2PST N.O. or N.C. bifurcated contacts
Mode	Momentary or maintained, 1 to 4 poles	Momentary or maintained, 1 or 2 poles	Momentary or maintained, 1 or 2 poles	Momentary or maintained	Momentary or maintained	Momentary or maintained, 1 or 2 poles	Momentary or maintained, 1, 2 or 3 poles	Momentary or maintained, 1, 2 or 3 poles	Momentary or maintained	Momentary	Momentary	Momentary or maintained	Momentary or maintained, 1 or 2 poles
Contact Material	10 microns gold over silver or silver contacts	Silver standard, gold over silver or silver over palladium (opt.)	Silver standard, gold over silver or silver over palladium (opt.)	Gold on nickel plating	Silver or gold over silver	Hard silver	Silver or gold over silver	Silver or gold	Gold over nickel	Gold	Gold	Gold plated on nickel	Gold plated on nickel
Contact Resistance			<50m Ω in new state	<100m Ω in new state		<50m Ω in new state	<50m Ω in new state	<50m Ω in new state	<50m Ω in new state	<100m Ω in new state	<100m Ω in new state	<100m Ω in new state	<50m Ω in new state
Contact Bounce			<3 msec	<2.5 msec		<3 msec	<1 msec	<2 msec	<100 usec	<1 msec	<1 msec	<2.5 msec	<200 usec
Lens Travel	0.118" (3mm)	0.196" (5mm)	0.228" (5.8mm)	0.087" (2.2mm)	0.106" (2.7mm)	0.216" (5.5mm)	0.118" (3mm)	Illum. PB: 3mm Emerg. PB: 10mm	0.118" (3mm)	0.016" (.4mm)	See Note 4	0.067" (1.7mm)	0.102" (2.6mm)
Operating Force (on lens) Force may vary depending on number of contacts.	200-550 grams (2-5.5N)	600-1200 grams (6-12N)	1100-2200 grams (11-22N) snap action 1300-4800 grams (14-48N) slow make	140 grams (1.4N)	160 grams (1.6N)	1 Pole: 360 g+30 g (3.6N+0.3N) 2 Pole: 680 g+30 g (6.8N+0.3N)	270-360 grams (2.7-3.6N)	350-1100 grams (3.5-11N) Emergency stop: 3000-5000 grams (30-50N)	300-350 grams (3-3.5N) Series 99: 130 grams (1.3N)	210 grams (2.1N)	See Note 5	140 grams (1.4N)	220 grams (2.2N)
Rating, AC	250 V/5 A P.F.=1 250 V/3 A P.F.=0.3	380 V/10 A P.F.=0.3 UL listed: 250 V/10 A	UL listed: 500 V/10 A SEV listed: 600 V/10 A	100 uV/10 A to 42 V/100 mA	50 V/1 A, Silver 50 V/100 maA Gold	380 V/10 A P.F.=1 minimum 12 V AC/50 ma	See Note 2	See Note 3	100 uV/10 A to 42 V/100 mA	42 V/50 ma maximum 50 mV/10uA minimum	42 V/50 ma maximum 50 mV/10uA minimum	42 V/50 ma maximum 100 uV/50uA minimum	42 V/50 ma maximum 100 uV/50uA minimum
Rating, DC	220 V/0.1 A 24 V/2A	220 V/0.2 A 24 V/6A	220 V/0.5 A 24 V/10A	100 uV/10 A to 42 V/100 mA	72 V/1 A, Silver 72 V/100 mA, Gold	220 V/0.2 A 24 V/6A inductive (L/R=30 ms)	220 V/0.5 A 24 V/6A resistive	220 V/0.5 A 24 V/6A resistive	100 uV/10 A to 42 V/100 ma	42 V/50 ma maximum 50 mV/10uA minimum	42 V/50 ma maximum 50 mV/10uA minimum	42 V/50 ma maximum 100 uV/50uA minimum	42 V/50 ma maximum 100 uV/50uA minimum
Continuous Current	5A	10A	10A	100 mA	1 A, Silver 100 mA, Gold	10A	6A	5A screw terminals	100 mA	50 mA	50 mA	100 mA 3 VA max.	100 mA 5 VA max.
Mechanical Life	2-million operations	2-million, Mom., 1-million maint.	See Note 1	mom: >2-million maint: >1-million	2-million operations	2-million PB 40,000 keylock	2-million PB 50K keylock, 100K selector	Same as snap action except 50K emerg. PB	5-million operations	>5-million operations	>1-million operations	>5-million operations	>5-million operations
Maximum Insulation Voltage	2500 VAC 50 Hz, 1 min.	2500 VAC 50 Hz, 1 min.	2500 VAC 50 Hz, 1 min.	2500 VAC 50 Hz, 1 min.	2500 VAC 50 Hz, 1 min.	2500 VAC 50 Hz, 1 min.	2000 VAC 50 Hz, 1 min.	4000 VAC 50 Hz, 1 min.	2500 VAC 50 Hz, 1 min.	500 VAC 50 Hz, 1 min.	500 VAC 50 Hz, 1 min.	500 VAC 50 Hz, 1 min.	500 VAC 50 Hz, 1 min.
Terminals	Solder terminals, Gold plated and 0.110" Q.C. (solderable)	Screw terminals, Silver plated. option: Q.C. (solderable)	Screw terminals, Silver plated. option: Q.C. (solderable)	Connector or solderable 1.6 x 0.4 mm	Quick connect, (solderable) 2.0 x 0.5mm	Screw terminals, 0.250" Q.C.	Solder terminals, 0.110" Q.C. (solderable)	Screw terminals, 0.110" Q.C., and universal plug-in (solderable)	Universal (PCB, solder, or quick connect)	Printed circuit board	Printed circuit board	Printed circuit board	Printed circuit board
Operating Temperature	No lamp: -13 to 149°F (-25 to 65°C) Lamp: -13 to 113°F (-25 to 45°C)	No lamp: -13 to 149°F (-25 to 65°C) Lamp: -13 to 113°F (-25 to 45°C)	No lamp: -13 to 140°F (-25 to 60°C) Lamp: -13 to 104°F (-25 to 40°C)	-13 to 149°F (-25 to 65°C)	No lamp or LED: -13 to 149°F (-25 to 65°C) Lamp: -13 to 113°F (-25 to 45°C)	-13 to 185°F (-25 to 85°C)	-13 to 131°F (-25 to 55°C)	-13 to 131°F (-25 to 55°C)	No lamp: -13 to 149°F (-25 to 65°C) Lamp: -13 to 113°F (-25 to 45°C)	-13 to 185°F (-25 to 85°C)	-13 to 158°F (-25 to 70°C)	-13 to 185°F (-25 to 85°C)	-13 to 149°F (-25 to 65°C)
Storage Temperature	-40 to 185°F (-40 to 85°C)	-22 to 185°F (-30 to 85°C)	-22 to 185°F (-30 to 85°C)	-40 to 185°F (-40 to 85°C)	-40 to 185°F (-40 to 85°C)	-40 to 203°F (-40 to 95°C)	-40 to 185°F (-40 to 85°C)	-40 to 185°F (-40 to 85°C)	-40 to 185°F (-40 to 85°C)	-40 to 185°F (-40 to 85°C)	-40 to 176°F (-40 to 80°C)	-40 to 185°F (-40 to 85°C)	-40 to 185°F (-40 to 85°C)
Vibration	10G @ 10-2000 Hz amplitude 1.5 mm	10G @ 10-2000 Hz amplitude 1.0 mm	10G @ 10-2000 Hz amplitude 1.0 mm	10G @ 10-2000 Hz amplitude .75 mm	10G @ 10-2000 Hz amplitude 1.0 mm	10G @ 10-2000 Hz amplitude .75 mm	10G @ 10-2000 Hz amplitude .75 mm	10G @ 10-2000 Hz amplitude .75 mm	50 Hz @ 1.5 mm	10G @ 10-2000 Hz amplitude .75 mm	10G @ 10-2000 Hz amplitude .75 mm	10G @ 10-2000 Hz amplitude .75 mm	10G @ 10-2000 Hz amplitude .75 mm
Shock	>15G @ 11 msec	>15G @ 11 msec	>10G @ 11 msec	>50G @ 11 msec	>20G @ 11 msec	>50G @ 11 msec	>50G @ 11 msec	>50G @ 11 msec	>15G @ 11 msec	>50G @ 11 msec	>50G @ 11 msec	>30G @ 11 msec	>50G @ 11 msec

Notes
1	Mechanical life	Pushbutton:	>3 x 106
		Lever:	>2.5 x 106
		Emergency stop:	>5 x 104
		Keylock:	>5 x 104
2	Gold over Silver contacts	minimum:	5 VAC/10 mA
		maximum:	250 VAC/6 A
	Silver contacts	minimum:	20 VAC/500 mA
		maximum:	250 VAC/6 A
3	Gold contacts	minimum:	100 uV/10 uA
		maximum:	42 V/100 mA
	Silver contacts	minimum:	20 VAC/10 mA
		maximum:	250 VAC/5 A
	Silver contacts (screw terminals)	minimum:	20 VAC/10 mA
		maximum:	250 VAC/6 A
4	Lens travel	switch element:	0.020" (0.5 mm)
		with actuator:	0.032" (0.8 mm)
5	Operating force	switch element:	200 grams (2 N)
		with actuator:	350 grams (3.5 N)