Beckwith Electronics


Hamburg, Illinois 62045
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EAO Switch



Technical Information


Soldering Instructions

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

Hand Soldering

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 500F. 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.

Machine Soldering

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.

Assembly, Testing, & Mounting

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

Enclosure Protection Classifications

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
inchesmillimeters 25.4
gramspounds0.002205
poundsgrams453.6
gramsnewtons0.01
FahrenheitCelsius (F-32)x5/9
CelsiusFahrenheit    (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 149F
(-25 to 65C)
Lamp:
-13 to 113F
(-25 to 45C)
No lamp:
-13 to 149F
(-25 to 65C)
Lamp:
-13 to 113F
(-25 to 45C)
No lamp:
-13 to 140F
(-25 to 60C)
Lamp:
-13 to 104F
(-25 to 40C)
-13 to 149F
(-25 to 65C)
No lamp or LED:
-13 to 149F
(-25 to 65C)
Lamp:
-13 to 113F
(-25 to 45C)
-13 to 185F
(-25 to 85C)
-13 to 131F
(-25 to 55C)
-13 to 131F
(-25 to 55C)
No lamp:
-13 to 149F
(-25 to 65C)
Lamp:
-13 to 113F
(-25 to 45C)
-13 to 185F
(-25 to 85C)
-13 to 158F
(-25 to 70C)
-13 to 185F
(-25 to 85C)
-13 to 149F
(-25 to 65C)
Storage Temperature -40 to 185F
(-40 to 85C)
-22 to 185F
(-30 to 85C)
-22 to 185F
(-30 to 85C)
-40 to 185F
(-40 to 85C)
-40 to 185F
(-40 to 85C)
-40 to 203F
(-40 to 95C)
-40 to 185F
(-40 to 85C)
-40 to 185F
(-40 to 85C)
-40 to 185F
(-40 to 85C)
-40 to 185F
(-40 to 85C)
-40 to 176F
(-40 to 80C)
-40 to 185F
(-40 to 85C)
-40 to 185F
(-40 to 85C)
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)