A410-161171-01 - Guardian Electric Manufacturing

AMSC N/A 1 of 5 FSC 5945

INCH-POUND

MS27254H

27 Novem ber 2003

SUPERSEDING

MS27254G

10 Feb 1989

DETAIL SPECIFICATION SHEET

RELAYS, EL ECTROMAGNETIC, 10 AMPERES, 4 PDT

TYPE I, PLUG-I N, HERMETICALLY SEALED

INACTIVE FOR NEW DESIGN AFTER 5 J UNE 1 987. NO

SUPERSEDING SPECI FICATION. FOR NEW DESIGN,

USE MIL-PRF-83536/15, 16, 17.

This specification i s approved f or use by all Departments

and Agencies of t he Department of Defense.

The requi rements for acquiring the relay described her ein shall

consist of this speci fication and the latest issue of MIL-PRF-6106.

FIGURE 1. Dim ensi ons and conf igurati on.

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MS27254H

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Inches mm Inches mm Inches mm

.001 0.03 .156 3.96 .630 16.00

.002 0.05 .157 3.99 .734 18.64

.004 0.10 .210 5.33 .921 23.39

.005 0.13 .230 5.84 1.047 27.38

.031 0.79 .281 7.14 1.078 28.58

.040 1.02 .314 7.98 1.140 28.96

.047 1.19 .315 8.00 1.359 34.52

.062 1.57 .362 9.19 1.437 36.50

.105 2.67 .420 10.67

.144 3.66 .524 13.31

NOTES:

1. Dime nsi ons are in inche s.

2. Metric equivalents are gi ven for general information onl y.

3. Unless otherwise specified, tolerance is ±.010 (0.25 m m).

4. Terminal numbers need not appear on r elay headers provided there is affixed t o the relay a suitable legibl e circuit

diagram that identifies each terminal location specified.

5. Pi ns to be perpendicular to header within one inch.

6. The use of diodes on ac relays i s optional. Act ual application must be shown on label.

7. In the event of a conflict between t he text of this standard and the references cited her ein, the text of this standard

shall take precedence.

8. Referen ced Gov ernment document s of the iss ue lis ted in th at issu e of t he Depa rt men t of D efens e Ind ex of

specifications and standards (DoDISS) spec ified in the soli citation form a part of this specification to the extent

specified herein.

9. Gasket shall pr ovide a r eliable s eal between th e rela y an d m ating s ock et t hat will meet t he en vironmental,

operat ional, and i nterface r equirem ents of the relay with t he mating socket. The gasket shall have shor e

hardeness 20 ±5, thickness .047. Gasket m at erial according to AMS 3332 has been consi dered accept able.

FIGURE 1. Dimensions and conf igurations - Conti nued.

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MS27254H

3

TABLE I. Dash numbers and characteristics.

Dash num ber

MS27254-

Type

Coil

Terminal type

Max

weight

in pounds

1 I ac Plug-in .20

2 I dc Plug-in .20

TABLE II. Operating characteristics.

Coil data

Time - (milliseconds maximum)

Nominal Max Max pick-up voltage

Co ntact Bounce

Main Aux

Part no.

MS

27254-

Co il

Volts

1/

Freq

Hz

Ω

Res

Volts

Amp

Nor-

mal

2/

High

temp

test

Cont

cur-

rent

test

Hold

vol-

tage

2/

Drop

out

volt-

age

2/

Oper

-ate

3/

Rel-

ease

4/ NO NC NO NC

1

ac

115

400

N/A

120

.04

90

95

103

30

5

15

30

3

5

---

2

dc

28

dc

160

29

.20

18

19.5

22.5

7

1.5

10

3

5

---

1/ Caution: Use of any coil volt ag e l ess than nomi nal coil v olt a ge will com prom is e th e operation of the relay .

2/ Ove r the te mperature range .

3/ With n omin a l coil vo ltage.

4/ From nominal coil voltag e.

TABLE III. Rat ed contact load (amperes per pole) ( case grounded).

28 V dc

115 V ac , 1 ph as e

115/200 V ac, 3 phase 1/

Main Aux Main Aux Main Aux

T yp e of l oad

Life

operat

ing

cycles

x 103

NO NC NO NC 400

Hz 60

Hz 400

Hz 60

Hz 400

Hz 60

Hz 400

Hz 60

Hz

See

appro

priate

notes

Resistive 100 10 10 10 10

Inductive 50 10 10 10 10

Inductive

Motor 100 5 5 5 5 2/

Lamp 100 3 3 3 3 2/

Transfer load 3/

Mechanical life

reduced

curren t

400

2.5

Mixed l oads 100 App licabl e per s pecif ication

1/ Absence of value indicates relay is not rated for 3 phase applications.

2/ 100, 000 operations - on NO contacts, and 50,000 operations on NC contacts at 28 V dc.

3/ Tr ansfer load indicates r elay is suitable for transfer bet ween unsynchronized ac power supplies at rating indicated.

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MS27254H

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Env i ronmental ch ara c teristics:

Temperature range: -70°C to +125°C.

Maximum altitude rating: 80,000 feet.

Shock g-leve l: 25 g’s.

Duration: 11 ms.

Max dur ati on contact openi ng: 10 µs.

Vibration - sinusoidal:

G-level: 20 g’s.

Frequency r ange: 10 - 2,000 Hz.

Vibration - random .

Applicable specification N/A.

Power spectral density N/A.

RMS G min N/A.

Frequency range N/A.

Curve N/A.

High shock N/A.

Acceleration: 15 g’s.

Electrical characteristics:

Insu la tion re sistance , initial : 100 megohms.

Afte r l ife or e n viron me nta l tests: 50 megohms .

Dielectric strength (sea level):

Initial After life te s ts

Coil to case 1,000 V rms 1,000 V rms

Aux cont act s N/A N/A

All other points 1, 500 V rms 1,125 V rm s

Dielectric strength (altitude):

Initial After life te s ts

Coil to case N/A 250 V rms

Aux cont act s N/A

All other points N/A 350 V rms

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MS27254H

5

Maximum contac t drop initial: 0.150 volt.

Afte r life test: 0.175 vo lt.

Overload current: 40 amperes dc, 60 amperes ac.

Rupture current: 50 amper es dc, 80 amperesac.

Duty rating: Conti nuous.

RFI specification MIL-STD-461.

(applicable to coil circuits of ac operated relays)

Conformance i nspection:

Performance of groups B and C tests are not applicable.

Group A acceptance reports shall be submitt ed to the qualif ying acti vity on a yearly basis in order to retain

qualifica tion for this military speci fication sheet.

Qualification by similarit y: See MIL-PRF-6106.

NOTES

Referenced documents. In addition to MIL-PRF-6106, this speci f ication sheet references the following docum ents.

( Government do cuments are av ailable o n line at http://assist.daps.dla.mil/quicksearch or www.dodssp.daps.mil or

from the S tanda rd ization Docum ent O r der Desk, 700 Robbins Avenue, Buil ding 4D, Philadelphia, PA 19111-5094) .

Soc iety of A utomo tive En gineer s d oc uments are a va i lable from the Society of Autom otive Engin eers 4 00

Commonwealth Dr ive Warrendale, Pennsyl vania, United States, 15096-0001. http://www.sae.org

STANDARDS

Departm ent of Defense

MIL- STD-461 - Requir ements f or the Control of Electromagneti c Interf erence Characteristics of

Subsys tems and Equipment

Soci ety of Automoti v e Engineers ( SAE)

SAE-AMS3332 - Sili c one Rubber Extreme Low- Temperature Res i s tant, 15-30

Custodians: Preparing activity:

NAVY - AS DL A - CC

Air Force - 11

DLA - CC ( Project 5945-1221-17)

Review activities:

Navy - EC

NOT E: The activit ies l isted abov e wer e interested in this d ocument as of the date of t his d ocument . Sinc e

organizations and res ponsibiliti es can change, you should verify the currency of t he information abov e using ASSIST

Online database at www.dodssp.daps.mil.

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