SERIES K
ENGINEERING DATA SHEET
RELAY - NONLATCH
4 PDT, 12 AMP
All welded construction
Contact arrangement
Qualified at 10 Amps to
4 PDT
MIL-PRF-83536
PRINCIPLE TECHNICAL CHARACTERISTICS
Contacts rated at
Weight
Dimensions
APPLICATION NOTES:
101
102
103D
007
023
APPLICABLE SOCKET:
SO-1048-8308/8518
SO-SSL
28 Vdc; 115 Vac, 400 Hz, 1Ø and
115/200 Vac, 400 Hz 3Ø
0.156lb max
1.01in x 1.01in x 1.00in
Special models available upon request.
Hermetically sealed, corrosion resistant metal can.
CONTACT ELECTRICAL CHARACTERISTICS
Contact rating
per pole and load
type [1]
Resistive
Inductive [3]
Motor
Lamp
Overload
Rupture
Load current in Amps
@28 Vdc
12
8
4
2
40
50
@115 Vac
400 Hz
12
8
4
2
60
80
@115/200 Vac, 400 Hz, 3Ø
12
8
4
2
60
80
@115/200 Vac, 60 Hz, 3Ø [2]
2.5
2.5
2
1
N/A
N/A
Featuring
LEACH
©
power and control solutions
www.esterline.com
AMERICAS
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622
.
.
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
EUROPE
2 Rue Goethe
57430 Sarralbe
France
.
.
Tel: (33) 3 87 97 31 01
Fax: (33) 3 87 97 96 86
ASIA
Units 602-603 6/F Lakeside 1
No.8 Science Park West Avenue
Phase Two, Hong Kong Science Park
Pak Shek Kok, Tai Po, N.T.
Hong Kong
Tel: (852) 2 191 3830
Fax: (852) 2 389 5803
Data sheets are for initial product selection and comparison. Contact Esterline Power Systems prior to choosing a component.
Date of issue: 9/07
- 125 -
Page 1 of 4
COIL CHARACTERISTICS (Vdc)
CODE
Nominal operating voltage
Maximum operating voltage
Maximum pickup voltage
- Cold coil at +125° C
- During high temp test at +125° C
- During continuous current test at +125° C
Maximum drop-out voltage
Coil resistance
Ω
±10% +25° C, except types
"C" and "V" +20%, -10%
18
19.8
22.5
7
290
9
9.9
11.25
4.5
70
4.5
5
5.7
2.5
18
36
38
42
14
890
18
19.8
22.5
7
290
9
9.9
11.25
4.5
70
A
28
29
B
12
14.5
C
6
7.3
M
48
50
N [4]
28
29
R [4]
12
14.5
SERIES K
V [4]
6
7.3
4.5
5
5.7
2.5
18
GENERAL CHARACTERISTICS
Temperature range
Minimum operating cycles (life) at rated load
Minimum operating cycles (life) at 25% rated load
Dielectric strength at sea level - All circuits to ground and circuit to circuit
Dielectric strength at sea level - Coil to ground
Dielectric strength at altitude 80,000 ft
Insulation resistance - Initial (500 Vdc)
Insulation resistance - After environmental tests (500 Vdc)
Sinusoidal vibration (A and D mounting)
Sinusoidal vibration (G and J mounting)
Random vibration
- Applicable specification
- Method
- Test condition - A and D mounting
- Test condition - G and J mounting
- Duration
Shock (A, D and W mounting)
Shock (G and J mounting)
Maximum contact opening time under vibration and shock
Operate time at nominal voltage@25°C
Release time at nominal voltage@25°C
Contact make bounce at nominal voltage@25°C
Contact release break bounce at nominal voltage@25°C
Weight maximum
MIL-STD-202
214
1G (0.4G
2
/Hz, 50 to 2000 Hz)
1E (0.2G
2
/Hz, 50 to 2000 Hz)
15 minutes each plane
200G / 6 ms
100G / 6 ms
10 µs
15 ms max
15 ms max
1 ms max
0.1 ms max [6]
0.156lb
-70°C to +125°C
100,000
400,000
1250 Vrms
1000 Vrms
500 Vrms [5]
100 M
Ω
min
50 M
Ω
min
0.12DA / 10 to 70 Hz
30G / 70 to 3000 Hz
0.12DA / 10 to 57 Hz
20G /57 to 3000 Hz
Unless otherwise noted, the specified temperature range applies to all relay characteristics.
Date of issue:
9/07
- 126 -
Page 2 of 4
NOTES
SERIES K
[1] Standard Intermediate current test applicable.
[2] 60 Hz load life, 10,000 cycles.
[3] Inductive load life, 20,000 cycles.
[4] "N, R & V" coils have back EMF suppression to - 42 volts maximum.
[5] 500 Vrms with silicone gasket compressed, 350 Vrms all other conditions.
[6] Applicable to Type "N, R & V" coils only.
7. Applicable military specification: MIL-PRF-83536. 8. Special models available: dry circuit, established reliability
testing, etc.
9. Time current relay characteristics per MIL-PRF-83536.
10. Relay will not operate, but will not be damaged by application of reverse polarity to coil.
NUMBERING SYSTEM
K - A
1
A
Basic series designation__________________________|
|
|
|
1-Mounting Style (A,D,G,J,W)__________________________|
|
|
2-Terminal Types (1,2,4)__________________________________|
|
3-Coil Voltage see coil characteristics (A,B,C,M,N,R or V)____|
MOUNTING STYLES
1.000
.040
1.015
1.015
.156
1.000
1.015
1.396
FULL R
6 PLACES
.937
.625
.150
1.015
1.446
1.718 MAX
.312
MOUNTING STYLE A
FOR USE WITH TRACK MOUNT
SYSTEM. NOTE: TRACK SYSTEM
NOT AVAILABLE FROM LEACH
1.025
MAX
MOUNTING STYLE D
.089
+
-
.005
.097
+
.005 THK SILICONE
-
RUBBER GASKET
1.025 MAX
1.396
.687
.160
.160
1.000 .937
.625
MOUNTING STYLE W
.687
1.015
#6-32
UNC-2A
3 STUDS
.375
1.446
FULL R
8 PLACES
.150
4 PLACES
1.015
.312
.047
1.015
1.015
.040
1.000
1.718 MAX
MOUNTING STYLE J
MOUNTING STYLE G
Date of issue:
9/07
- 127 -
Page 3 of 4
TERMINAL TYPES
FINISH: TIN/LEAD
FINISH:
CASE-TIN/LEAD
PINS-GOLD PLATE
.270
.062 + .002
-
DIA PIN
14 PLACES
.050
+
.005
-
SERIES K
SILICONE
RUBBER
GASKET
.270
TERMINAL TYPE 1
FINISH: TIN/LEAD
.062 +.001
-
DIA PIN
14 PLACES
.300
TERMINAL TYPE 4
.062 +.002
-
DIA PIN
14 PLACES
TERMINAL TYPE 2
SCHEMATIC DIAGRAM
D3
D2
D1
C3
C2
C1
B3
B2
B1
A3
A2
A1
+
B1
C1
D1
WIRING DIAGRAM
-X2
D2
D3
STANDARD TERMINAL LAYOUT
1 -X2
D
C
2
3
.200
C2
C3
.400
B
+
.600
+X1
A
B2
B3
COIL SUPPRESSION
FOR N, R & V
COILS ONLY
A1
+X1
A2
A3
.200
.400
+X1
-X2
.600
STANDARD TOLERANCE: .XX =.03; .XXX =.010
Date of issue:
9/07
- 128 -
Page 4 of 4
Application notes
DERATING OF CONTACTS FOR DC VOLTAGES
ABOVE NOMINAL RATING
N°101
To establish a standard for the derating of relay contacts is, at best, a subjective practice. Limitations are governed by the type
of relay, contact gap, maximum voltage capabilities of the relay contact system, and the contact material.
The most common method is to derate the contacts by use of the Power Formula, using the known current and voltage.
This method is valid only for
Resistive Loads,
and is an approximation only; keeping in mind the limitations mentioned above.
Power = IE (Current x Voltage)
I
2
E
2
= 2/3 I
1
E
1
Example:
A designer is working with a 55 volt DC system and has a relay rated at 10 amps resistive at 28 volts DC.
What is the maximum current that can be switched at 55 Vdc.
I
1
= 10 Amperes
E
1
= 28 VDC
E
2
= 55 VDC
I
2
= ? (Current ratings at 55 VDC Resistive)
I
2
E
2
= 2 I
1
E
1
/3
I
2
= 2 I
1
E
1
/E
2
3
= 2 (10 x 28)/55 x 3
= 560/165
I
2
= 3.4 Amperes at 55VDC
In addition, the user should always be concerned about the following:
1. Derating contacts that are rated for less than 10 Amperes at nominal voltage.
2. Derating contacts for use in system voltages above 130 Volts DC
Date of issue: 6/00
- 14 -
Page 1 of 1
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