Model: 837-A4A

Thermostatic Switch

Properties:

Hazardous Locations/environmental Protection
General purpose-nema type 1
Overall Length
3.500 inches
Overall Height
5.250 inches
Overall Width
2.562 inches
Body Height
4.625 inches
Unthreaded Mounting Hole Diameter
0.219 inches
Capillary Tube Length
72.0 inches
Bulb Length
8.500 inches
Bulb Diameter
0.375 inches
Longest Horizontal Distance Between Mounting Centers
1.625 inches
Longest Vertical Distance Between Mounting Centers
1.375 inches
Tempurature Sensing Element Type
Capillary tube-bulb
Operating Tempurature Rating
240.0 degrees fahrenheit
Mounting Method
Base and unthreaded hole
Features Provided
Electrical access port
Contact Action Stimulus
Increase
Mounting Facility Pattern
Two position diagonal
Nonpile-up Contact Arrangement
1 pole, double throw, one position momentary
Terminal Type
Screw
Contact Load Current Rating
3.0 amperes resistive load second voltage
Contact Load Current Rating
5.0 amperes resistive load first voltage
Contact Adjustability
Actuation point adjustable and deactuation point adjustable
Contact Adjustment Range
+60.00/+190.00 actuation point degrees fahrenheit and +60.00/+190.00 deactuation point degrees fahrenheit
Contact Adjustment Type
Internal actuation point screw and internal deactuation point screw
Contact Voltage Rating In Volts
240.0 ac at sea level first voltage
Contact Voltage Rating In Volts
600.0 dc at sea level second voltage
Media For Which Designed
Gas or liquid
Style Designator
Rectangular
NSN
5930-01-011-9250
Part Number
837-A4A
Description
Switch,thermostatic
CAGE
01121

A switch that is actuated by changes in ambient temperature. Excludes circuit breaker; control, temperature (as modified); fuse (as modified); protector, thermal-overload, electrical motor; relay, thermal; and thermostat, flow control. See also control, temperature (as modified) and regulator, temperature (as modified).

Part 837-A4A NSN 5930-01-011-9250

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00451
FIIG:
A048B0
Concept No.:
1
App. Key:
F
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 9032100000
  • SITC: 87461
  • End Use: Measuring, testing, control instruments
  • NAICS: 334512
  • USDA: 1

Freight Class: Thermostats

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