Model: 20SR3B4

Rotary Switch

Properties:

Hazardous Locations/environmental Protection
Dustproof
Overall Height
9.500 inches
Overall Width
6.750 inches
Shaft Diameter
0.625 inches single actuator
Shaft Length
0.625 inches single actuator
Unthreaded Mounting Hole Diameter
0.500 inches single mounting facility
Individual Section Quantity
6
Longest Horizontal Distance Between Mounting Centers
8.000 inches single mounting facility
Longest Vertical Distance Between Mounting Centers
3.250 inches single mounting facility
Switch Contact Basic Design
Nonpile-up symmetrical
Mounting Method
Base single mounting facility
Features Provided
Metallic inclosure
Contact Voltage Rating In Volts
250.0 dc at sea level
Contact Voltage Rating In Volts
500.0 ac at sea level
Mounting Facility Pattern
Four position rectangular single mounting facility
Switch Actuator Indexing Position Quantity
4 single actuator
Shaft Type
Round single actuator
Terminal Type
Tab w/screw
Contact Switching Action
Breaks before makes each section front
Switch Actuator Positioning Increment
90.0 degrees single actuator
Contact Load Current Rating
200.0 amperes resistive load dc at sea level
Contact Load Current Rating
200.0 amperes resistive load ac at sea level
Test Data Document
81349-mil-s-15291 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Nondefinitive Specification/std Data
20sr class
NSN
5930-00-548-7944
Part Number
20SR3B4
Description
Switch,rotary
CAGE
81349

A switch actuated by a definite angular rotation of the switch shaft about its axis. For items having rated actuation travel and pressure characteristics, see switch, sensitive. Excludes relay, rotary; switch, stepping; and switch, telephone (as modified).

Part 20SR3B4 NSN 5930-00-548-7944

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02134
FIIG:
A052B0
Concept No.:
1
App. Key:
A
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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536509025
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, rotary, rated at over 5 a, for a voltage not exceeding 1,000 volts

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