E55A-E21BC

View detailed technical data, stock status, and sourcing information for: E55A-E21BC
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5930 Switches

National Stock Number

5930-01-226-0897

Item Name Code

00451

Assigment Date

02/12/1986 (40 years ago)

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

2.125 inches nominal overall width, 4.688 inches nominal overall height, 2b all threaded hole thread class, weatherproof hazardous locations/environmental protection, 4.312 inches nominal overall length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 2b all threaded hole
Hazardous Locations/Environmental Protection: weatherproof
Overall Length: 4.312 inches nominal
Overall Height: 4.688 inches nominal
Overall Width: 2.125 inches nominal
Body Length: 4.156 inches nominal
Distance Between Mounting Facility Centers: 3.750 inches nominal
Capillary Tube Length: 72.0 inches nominal
Bulb Length: 6.906 inches nominal
Bulb Diameter: 0.688 inches maximum
Temp Sensing Element Type: capillary tube-bulb
Operating Temp Rating: 200.0 fahrenheit maximum
Mounting Method: bracket and threaded hole
Features Provided: electrical access port
Contact Action Stimulus: increase
Nominal Thread Size: 0.190 inches all threaded hole
Mounting Facility Pattern: two position in-line
Nonpile-Up Contact Arrangement: 2 pole, double throw, one position momentary
Terminal Type: screw
Contact Load Current Rating: 15.0 amperes resistive load single voltage
Contact Adjustability: actuation point adjustable and deactuation point adjustable
Contact Adjustment Range: -20.00 to 65.00 actuation point degrees celsius and -20.00 to 65.00 deactuation point degrees celsius
Contact Adjustment Type: external actuation point knob with scale and external deactuation point knob with scale
Contact Voltage Rating In Volts: 250.0 ac at sea level single voltage
Media For Which Designed: gas or liquid
Style Designator: rectangular
Thread Series Designator: unf all threaded hole

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5930-01-309-3919	No Name Available	02/01/1992

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
B039-020	Thermostatic Switch
E55A-E21BC	Thermostatic Switch
E55A-E21BC-9236	Thermostatic Switch

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5930-01-226-0897?

The FSCG of the NSN 5930-01-226-0897 is 5930

Does the NSN 5930-01-226-0897 have a Schedule B code assigned?

Yes, the Schedule B code is 9032100000

Does NSN 5930-01-226-0897 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5930-01-226-0897 contain precious materials?

Item does not contain precious metal.

Does NSN 5930-01-226-0897 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5930-01-226-0897 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Wed, Feb 12, 1986