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S437A,B, S637A SAIL SWITCHES
MODEL
NO.
S437A
S437B
S637A
Maximum Ambient Temperature:150° F (66° C).
Insertion Length: Standard - 3 1/2 in.(89 mm).
Large - 4 1/2 in. (114 mm).
Switch Contact Rating (amperes):
Full Load
Locked Rotor
2 A at 24 Vac.
15 A at 6 Vac.
7.5 A at 12 Vdc.
Cover Finish: Red enamel.
Underwriters Laboratories Inc. Listed:
S437A, S637A - File No. MP2169, Vol. 2 dated
5-11-59; Guide No. MFHX.
S437B - File No. MP2168, Vo. 2 dated
5-11-59; Guide No. MFHX2 (Component Recognized).
Canadian Standards Association Certification: Listed S,
File No. LR95329, Class 481302.
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
60-2186—2
INCLUDES CASE
AND COVER
YES
Spst. Normally open contacts
close at 1900-2250 fpm
(9.7 - 11.4 m/s). Varies
NO
directly with differential
setting.
Spst. One set of contacts
opens, one set closes at
1900-2250 fpm
YES
(9.7 - 11.4 m/s). Varies
directly with differential
setting
120 Vac
240 Vac
8
5.1
48
30.6
SWITCHING ACTION
ON INCREASING
VELOCITY
WITH CASE AND COVER
1/4
(6)
7/16 (11)
1-7/16
2-5/16
(37)
(59)
7/16 (11)
WITHOUT CASE AND COVER
7/32
3/32
(6)
(2)
11/16
(17)
1-7/16
(37)
1-13/16
(30)
7/32
7/32
(6)
(6)
Fig. 1. S437 Dimensions in in. [mm in Brackets].
2
SWITCHING ACTION
ON DECREASING
VELOCITY
Switch de-energizes at
1350 fpm (6.9 m/s). Not
adjustable.
One set of contacts opens
to de-energize blower, one
set closes to energize
warming circuit at 1350 fpm
(6.9 m/s). Not adjustable.
1-5/32
3-3/4 (95)
(29)
3-1/4 (83)
2-1/8
7/8
7/8
3/16 IN. MOUNTING
(54)
(22)
(22)
HOLES (2)
DUCT OPENING
2-1/4 (70)
3/32 (2)
15/16
(24)
1-7/8
(48)
15/16
(24)
2-1/8
DUCT OPENING
(54)
1 INSERTION LENGTH:
STANDARD – 3-1/2 (89)
LARGE – 4-1/2 (114)
SWITCH
DIFFERENTIAL
Adjustable,
550-900 fpm
(2.8 - 4.6 m/s)
KNOCKOUT FOR 1/2
(13) INCH CONDUIT
7/8
(22)
INSERTION
LENGTH
1-5/8
(41)
INSERTION
LENGTH
1
M27086
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