Datasheet

Sensing and Productivity Solutions 11
MICRO SWITCH™ Specialty Large Basic Switches BS | DT | MN | MT | TB Series
Table 18. Large Snap-Action Switch Accessories • Brackets
Description 8MA1 8MA2 17MA1-B
Description
Adjustable mounting bracket with
adjustment slot on left
Adjustable mounting bracket with
adjustment slot on right
Conversion mounting bracket
Housing material Steel Steel Corrosion-resistant metal
Measurements 60,2 mm W x 21,3 mm H x 7,4 mm D [2.37 in W x 0.84 in H x 0.29 in D]
66,8 mm W x 19,0 mm D
[2.63 in W x 0.75 in D]
Features
sturdy plated steel construction; fast, easy screwdriver adjustment; can be
used with all standard basic switches
converts standard basic switches
from side to top mount; corrosion
resistant; snaps into switch mounting
holes without tools
Table 19. Large Snap-Action Switch Accessories • Zinc Die-Cast Enclosures
Description 3PA1 3PA28 3PA2
Description
mounted from either side through
3,55 mm [0.140 in] dia. holes on 25,4
mm [1.0 in] centers; conduit/hub 0.5
– 14 NPT internal thread
mounted from either side through
3,55 mm [0.140 in] dia. holes on 25,4
mm [1.0 in] centers. 1/2-14 NPSM
internal thread conduit hub
switch secured in enclosure; two 4,37
mm [0.172 in] dia. holes in flange ac-
cept #8 screws for mounting on 41,3
mm [1.625 in] centers; conduit/hub
0.5 – 14 NPT internal thread
Housing material die-cast zinc enclosure (side mount) die-cast zinc enclosure (side mount) die-cast zinc enclosure (flange mount)
Measurements
74,8 mm W x 42,9 mm H x 25,4 mm
D [2.95 in W x 1.69 in H x 1.00 in D]
74,8 mm W x 42,9 mm H x 25,4 mm
D [2.95 in W x 1.69 in H x 1.00 in D]
74,8 mm W x 42,9 mm H x 25,4 mm D
[2.95 in W x 1.69 in H x 1.00 in D]
Sealing/Features NEMA 1; IP40; protects the switch from physical abuse and personnel from contact with exposed terminals
Table 20. Large Snap-Action Switch Accessories • Plastic Terminal Enclosures
Description 5PA1 5PA2 5PA3
Description
Plastic terminal enclosure used with
solder terminal switches
Plastic terminal enclosure used with
screw terminal switches
Plastic terminal enclosure used
with either solder or screw terminal
switches with auxiliary actuators
assembled
Housing material plastic plastic plastic
Measurements
52,8 mm W x 16,1 mm H
[2.08 in W x 0.64 in H]
52,8 mm W x 20,2 mm H x 21,0 mm
D [2.08 in W x 0.80 in H x 0.83 in D]
52,8 mm W x 20,2 mm H x 21,0 mm D
[2.08 in W x 0.80 in H x 0.83 in D]
Sealing/Features NEMA 1, IP40; easy to use; screw & solder terminal versions; protect personnel from contact with exposed terminals