Datasheet
7
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MICRO SWITCH™ Premium Large Basic Switches
ORDER GUIDE BY ASCENDING ELECTRICAL CAPABILITY
Catalog
Listing
Recommended
For
Electrical
Data and
UL Codes
O.F.
N [oz]
R.F.
min.
N [ oz]
P. T.
max.
mm
[in]
O.T.
min.
mm
[in]
D.T.
mm [in]
O.P.***
mm [in]
BZ/BA type
BZ/BA Type
BZ-2R72-A2**
Applications requiring
gold alloy contacts
1 A
P
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
BZ-2R725551-A2
Gold alloy contacts
Dustproof and splash
resistant seal
1 A
P
2,22 to 4,17
[8 to 15]
1,11
[4]
–
0,13
[0.005]
0,01 to 0,06
[0.0004 to 0.0025]
15,88
[0.625]
BZ-2R244-A2
Operating in temp. to
204 °C [400 °F] for
100 hours
5 A
B
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
BZ-R21-A2 Lower force
10 A
C
1,11
[4]
0,7
[2.5]
0,30
[0.012]
0,13
[0.005]
0,005 to 0,013
[0.0002 to 0.0005]
15,88
[0.625]
BZ-2R-A2
Most applications
SPDT
15 A
A
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
WZ-2R-A2
SPST (normally
closed)
15 A
A
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
YZ-2R-A2 SPST (normally open)
15 A
A
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
Sealed type
Sealed type
BZ-R-A2 Less differential travel
15 A
D
1,95 to 2.5
[7 to 9]
1,11
[4]
0,30
[0.012]
0,13
[0.005]
0,005 to 0,008
[0.0002 to 0.0003]
15,88
[0.625]
BZ-R19-A2 Best repeatability
15 A
D
1,95 to 3,34
[7 to 12]
1,11
[4]
0,30
[0.012]
0,13
to 0,2
[0.005
to
0.008]
0,005 to 0,02
[0.0002 to 0.0008]
16,26
[0.640]
BZ-2R24-A2
Operating in temp. to
121 °C [250 °F]
15 A
A
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
BZ-2RT04
(M8805/1-004)
MIL-PRF-8805 appli-
cation requirements
15 A
A
2,5 to 3,61
[9 to 13]
1,67
[6]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
BZ-2R05-A2
Stability under
varying humidity
15 A
A
2,5 to 3,61
[9 to 13]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,01 to 0,05
[0.0004 to 0.0020]
15,88
[0.625]
BZ-2R5551-A2
Dustproof and splash
resistant seal
15 A
A
2,5 to 4,17
[9 to 15]
1,11
[4]
–
0,13
[0.005]
0,01 to 0,06
[0.0004 to 0.0025]
15,88
[0.625]
BZ-2R55-A2-S
Sealed construction.
Stainless steel internal
snapspring
15 A
A
2,5 to 4,17
[9 to 15]
1,11
[4]
–
0,13
[0.005]
0,01 to 0,06
[0.0004 to 0.0025]
15,88
[0.625]
BA/BE type
BA-2R-A2 Up to 20 ampere load
20 A
G
3,89 to 6,12
[14 to 22]
2,78
[10]
1,27
[0.050]
0,25
[0.10]
0,05 to 0,19
[0.0020 to 0.0075]
16,26
[0.640]
BA-2R24-A2
Operating in temp. to
121 °C [250 °F]
20 A
G
3,89 to 6,12
[14 to 22]
2,78
[10]
1,27
[0.050]
0,25
[0.10]
0,05 to 0,19
[0.0020 to 0.0075]
16,26
[0.640]
BM-1R-A2 Up to 22 ampere load
22 A
F
1,95 to 2,78
[7 to 10]
1,11
[4]
0,38
[0.015]
0,13
[0.005]
0,013 to 0,025
[0.0005 to 0.0010]
15,88
[0.625]
BE-2R-A4
Up to 25 ampere load,
#8 screw terminals
25 A
H
3,89 to 6,12
[14 to 22]
2,78
[10]
1,27
[0.050]
0,25
[0.10]
0,05 to 0,19
[0.0020 to 0.0075]
16,26
[0.640]
Manual Reset
BZ-RX
Manual reset, solder
terminals
15 A
E
1,95 to 2,5
[7 to 9]
0,56 to 2,78*
[2 to 10]
–
0,30
[0.012]
–
0,13
[0.005]
0,38*
0.015]
–
15,88
[0.625]
WA-1RX-A4
Manual reset
SPST-NC, #8 screw
terminals
20 A
W
5,56 [20]
6,95 [25]*
– –
0,25
[0.010]
–
0,20
[0.008]
–
16,26 [0.64]
27,9*[1.10]
* Reset characteristics
** -A2 is supplied with #6 terminal screws
*** Except where stated, ±0,38 mm [±0.015 in]
O.F. • Operating force
R.F. • Release force
P.T. • Pretravel
O.T. • Overtravel
D.T. • Differential travel
O.P. • Operating position