Submittal Sheet

S437A,B, S637A SAIL SWITCHES
60-2186—2 2
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.
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):
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.
Fig. 1. S437 Dimensions in in. [mm in Brackets].
MODEL
NO.
INCLUDES CASE
AND COVER
SWITCHING ACTION
ON INCREASING
VELOCITY
SWITCHING ACTION
ON DECREASING
VELOCITY
SWITCH
DIFFERENTIAL
S437A YES Spst. Normally open contacts
close at 1900-2250 fpm
(9.7 - 11.4 m/s). Varies
directly with differential
setting.
Switch de-energizes at
1350 fpm (6.9 m/s). Not
adjustable.
Adjustable,
550-900 fpm
(2.8 - 4.6 m/s)
S437B NO
S637A YES
Spst. One set of contacts
opens, one set closes at
1900-2250 fpm
(9.7 - 11.4 m/s). Varies
directly with differential
setting
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.
120 Vac 240 Vac
Full Load 8 5.1
Locked Rotor 48 30.6
7/8
(22)
7/8
(22)
2-1/8
(54)
3-1/4 (83)
3-3/4 (95)
WITH CASE AND COVER
WITHOUT CASE AND COVER
3/16 IN. MOUNTING
HOLES (2)
INSERTION
LENGTH
1-5/32
(29)
7/8
(22)
DUCT OPENING
1/4
(6)
7/16 (11)
1-7/16
(37)
7/16 (11)
2-5/16
(59)
2-1/4 (70)
2-1/8
(54)
7/32
(6)
7/32
(6)
1-7/16
(37)
7/32
(6)
3/32
(2)
3/32 (2)
15/16
(24)
15/16
(24)
INSERTION
LENGTH
1-13/16
(30)
11/16
(17)
KNOCKOUT FOR 1/2
(13) INCH CONDUIT
1
INSERTION LENGTH:
STANDARD – 3-1/2 (89)
LARGE – 4-1/2 (114)
DUCT OPENING
1
1-5/8
(41)
1-7/8
(48)
M27086