SUBMINIATURE
DA Series
Features
GLong life coil spring construction
GStandard gold crosspoint
contacts (0.1 amp) for low level
switching applications
GSilver contact low voltage DAB
version also available. Consult factory.
GFive standard terminals to choose from
GAutomated assembly insures high
quality and reliability
GChoice of external snap-on actuators
GCustom actuators available
GVDE approved
Specifications
Electrical
Temperature Rating: -40° to +85°C
Flammability Rating: UL94V-0
Materials
Case: Thermoplastic Polyester
Actuating Button: Thermoplastic Acetal
Terminals: Silver-Plated Bronze
Moving Blade: Silver-Plated Beryllium Copper
Spring: Copper-Coated Stainless Steel
Auxiliary Actuator: Stainless Steel
Roller: Stainless Steel
Contacts: Gold Crosspoint
(DA3)
, Silver
(DAB)
Stainless steel spring
Thermoplastic
actuating button
Thermoplastic
cover and base
Gold crosspoint
contacts
Silver-plated terminals
Common terminal
NC terminal
NO terminal
Beryllium copper
moving blade
Electrical Ratings
Electrical Life at Rated Load
Switch According to VDE According to UL
Series EN61058 Rating UL1054 Rating (Min. Operations) (Min. Operations)
DA3 0.1(0.05)A, 50VAC 0.1A, 125VAC 50,000 100,000
DAB N/A 5A, 24VAC; 1A, 48VDC N/A 6,000
17
0.781 (19.84)
0.250
(6.35)
0.089 (2.26) Case Opening Diameter
Reference
Line
Operate
Position
0.352
(8.94)
0.085 (2.16)
0.091 (2.31)
0.405
(10.29)
0.238
(6.05)
0.075
(1.91)
0.209
(5.31)
0.093
(2.36)
0.085 (2.16)
0.091 (2.31)
0.375
(9.53)
0.095 (2.41)
0.101 (2.57)
0.375
(9.53
0.005
0.13)
+
-
+
-
0.330
(8.38
0.015
0.38)
+
-
+
-
0.081 (2.06)
Button Diameter
0.300
(7.62
0.010
0.25)
+
-
+
-
COM N.O. N.C.
0.110 (2.79)
0.125
(3.18)
0.110 x 0.020
(2.79 x 0.51)
0.110 (2.79)
0.344
(8.74)
0.110 x 0.020
(2.79 x 0.51)
0.050 (1.27)
0.160
(4.06)
0.191
(4.85)
0.050 x 0.020
(1.27 x .51)
0.110 (2.79)
0.293
(7.44)
0.110 x 0.020
(2.79 x 0.51)
0.093 (2.36)
0.250 (6.35)
0.093 x 0.020
(2.36 x 0.51)
Terminals
QC
(Code B)
SS
(Code D)
PCB
(Code H)
QC
(Code F )
DIN
(Code K )
0.050
(1.27)
dia.
0.058
(1.47)
dia.
0.051
(1.30)
dia.
DA 3 C B 1 A A
Series/Prefix
Code Current Rating
3 0.1A, 125VAC
B 5A, 24VDC
Code Terminal Configuration
1 Standard
Code Contact Configuration
A SPST NO
B SPST NC
C SPDT
Code Terminal Type inches (mm)
B 0.110 x 0.020 (2.79 x 0.51) QC
D 0.110 x 0.020 (2.79 x 0.51) SS
F 0.093 x 0.020 (2.36 x 0.51) QC
H 0.050 x 0.020 (1.27 x 0.51) PCB
K 0.110 x 0.020 (2.79 x 0.51) DIN
Code Actuation Length inches (mm)
Code Actuator Type A B C
AA Button — — —
L Lever Standard Ratio 0.154 (3.91) 0.271 (6.88) 0.403 (10.24)
M Lever High Ratio 0.279 (7.09) 0.396 (10.06) 0.528 (13.41)
R Roller Standard Ratio -0.061 (-1.55) 0.201 (5.11) 0.330 (8.38)
T Roller High Ratio 0.064 (1.63) 0.326 (8.28) 0.455 (11.56)
S Simulated Roller Standard Ratio 0.110 (2.79) 0.197 (5.00) 0.258 (6.55)
U Simulated Roller High Ratio 0.235 (5.97) 0.322 (8.18) 0.383 (9.73)
Ordering Information
Dimensions inches (mm)
C
L
High Ratio
Standard Ratio
Switch
Mounting
Hole
Actuation
Length
0.191
(4.85)
Actuating Button
0.066
(1.68)
PCB Footprint
0.405 (10.29) 0.238
(6.05)
NCNO
C
0.063 Ø (3)
(1.60)
Ordering Actuators Separately
There are three standard actuators available,
plus an extra long actuator which may be
used for customizing forms and lengths.
To order actuators for the DA3 Series Sub-
miniature Switch, use the actuator
part number shown. Actuators may be
ordered separately and installed on
switches as required.
Circuitry
Contact arrangement available in choice
of single pole double throw, or single
pole single throw, either normally open
or normally closed.
Mounting
Recommended mounting screw size: #2–56
round head. Recommended torque on
screw: 2 inch lbs. max. (with flat washer min.
0.240″[6.10mm] outside diameter).
3.066 (77.876)
C
L
Standard Lever Actuator
for LB and MB
Part No. 0014-5576
Roller Actuator
for RB and TB
Part No. 0114-0737
Simulated Roller Actuator
for SB and UB
Part No. 0014-5594
Extra Long Actuator
for Customizing
Part No. 0014-5519
Actuators
Many special forms and lengths of actuators
are available. External actuators can
be snapped on in either of two locations
(standard lever ratio or high lever ratio).
Actuation lengths are dimensioned
from centerline of switch mounting
hole (see drawing).
Specifications subject to change without notice.
Actuation lengths are dimensioned from center line of switch mounting hole. Refer to dimensional drawing.
Actuator Specifications
Maximum Maximum Operating Minimum Max. Movement Actuation
Operating Pre-Travel Point Over-Travel Differential Length
Actuator Switch Force inches inches inches inches inches
Type Type (gms.) (mm) (mm) (mm) (mm) (mm)
–AA 90 0.030 0.330±0.015 0.035 0.007 —
(0.76) (8.38±0.38) (0.89) (0.18) —
–LB 27 0.144 0.348±0.060 0.054 0.028 0.271
(3.66) (8.84±1.52) (1.37) (0.71) (6.88)
–MB 9 0.416 0.350±0.173 0.078 0.081 0.396
(10.57) (8.90±4.39) (1.98) (2.06) (10.06)
–RB 30 0.131 0.571±0.054 0.046 0.025 0.201
(3.33) (14.50±1.37) (1.17) (0.64) (5.11)
–TB 10 0.379 0.571±0.173 0.067 0.074 0.326
(9.63) (14.50±4.39) (1.70) (1.88) (8.28)
–SB 30 0.131 0.571±0.054 0.046 0.025 0.197
(3.33) (14.50±1.37) (1.17) (0.64) (5.00)
–UB 10 0.379 0.571±0.173 0.067 0.074 0.322
(9.63) (14.50±4.39) (1.70) (1.88) (8.18)
