#21ER3 Limit Microswitch | Switches

21ER3

Sensitive Switch

NSN 5930-00-034-0572

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
000340572

Product Features

Weapon system essential

Technical Specifications of NSN

Body Style:
Hole mounted
Actuator Style:
Round
Actuator Diameter:
0.244 inches
Actuator Height:
0.759 inches
Actuator Free Position Height:
0.759 inches
Housing Height:
1.125 inches
Housing Length:
3.937 inches
Housing Width:
2.250 inches
Center To Center Distance Between Housing Mounting Facilities Parallel To Length:
2.437 inches
Center To Center Distance Between Housing Mounting Facilities Parallel To Width:
1.875 inches
Maximum Voltage Rating In Volts:
125.0 ac and 28.0 dc
End Application:
Taircraft stratofortress b-52, stratolifter c135, galaxy c-5, awacs e-3a, engine aircraft tf33-pw-10 (c135e, ec-135h/k/p), engine aircraft tf33-p-3/5/9(c/ec-135, b-52h)engine aircraft tf-33-p-7(c-141a/b) , joint stars target radar system
Inclosure Type:
Fully enclosed
Mounting Method:
Terminal
Nonpile-up Contact Arrangement:
1 pole, double throw, one position momentary single switch unit
Switch Release Force:
23.0 ounces
Criticality Code Justification:
Feat
Switch Actuating Force:
50.0 ounces
Actuator Movement:
59.0 pretravel degrees and 138.0 overtravel degrees and 5.0 differential degrees
Contact Load Current Rating At Maximum Rated Voltage:
15.000 amperes resistive dc and 10.000 amperes inductive dc and 1.000 amperes resistive ac and 1.000 amperes inductive ac
Terminal Type And Quantity:
1 connector, receptacle
NSN:
5930-00-034-0572
Item Name:
Limit Microswitch
Cage Code:
91929

Other Related Parts

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
8532048
Cage Code:
97151
RNCC:
3
RNVC:
2
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
10HF2
Cage Code:
91929
RNCC:
5
RNVC:
2
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
1HA9
Cage Code:
91929
RNCC:
5
RNVC:
9
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
10HF2
Cage Code:
60198
RNCC:
5
RNVC:
9
RNAAC:
TX
Status:
A
MSDS:
SADC:

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Pricing & Availability

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Catalog Drilldown
--- Electrical And Electronic Equipment Components
------ Switches
--------- Push Switches
------------ P/N 21ER3

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Last Updated: 02/24/2025