SERIES KA
ENGINEERING DATA SHEET
RELAY - NONLATCH - AC COIL
4 PDT, 10 AMP
115 Vac and 28 Vac, 400 Hz and 50/400 Hz coil voltages
All welded construction
Contact arrangement
Qualified to
4 PDT
MIL-PRF-83536
PRINCIPLE TECHNICAL CHARACTERISTICS
Contacts rated at
Weight
Dimensions
28 Vdc; 115 Vac, 400 Hz, 1Ø and
115/200 Vac, 400 Hz 3Ø
0.155lb max
1.10in x 1.10in x 1.00in
Special models available upon request.
Hermetically sealed, corrosion resistant metal can.
APPLICATION NOTES:
102
007
023
APPLICABLE SOCKET:
SO-1048-8776/8779
CONTACT ELECTRICAL CHARACTERISTICS
Contact rating
per pole and load
type [1]
Resistive
Inductive [3]
Motor
Lamp
Overload
Rupture
Load current in Amps
@28 Vdc
10
8
4
2
40
50
@115 Vac
400 Hz
10
8
4
2
60
80
@115/200 Vac
400 Hz, 3Ø
10
8
4
2
60
80
@115/200 Vac
60 Hz, 3Ø [2]
2.5
2.5
2
1
N/A
N/A
@230/400 Vac
400 Hz, 3Ø [8]
5
5
2
2
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: 07/10
- 101 -
Page 1 of 4
COIL CHARACTERISTICS (Vac)
Vac 400Hz
CODE
Nominal operating voltage
Maximum operating voltage@+125°C
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 current maximum milliAmperes at +25° C
22
24.4
25.6
10
225
90
95.4
103.5
30
40
23
24.6
25.9
10
120
95
100
105
30
28
180
185
195
60
22
E
28
30
F
115
122
Vac 50 thru 400Hz
J
28
30
K
115
122
SERIES KA
Vac 400Hz
T [8]
230
248
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
20 ms max
50 ms max
1 ms max
0.1 ms max [6]
0.169lb
-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:
07/10
- 102 -
Page 2 of 4
NOTES
[1] Standard Intermediate current test applicable.
[2] 500 Vrms with silicone gasket compressed, 350 Vrms all other conditions.
3. Applicable military specification: MIL-R-83536.
4. Special models available: dry circuit, established reliability testing, etc.
[5] Inductive load life, 20,000 cycles for AC and 10,000 cycles for DC.
[6] 60 Hz load life, 10,000 cycles.
7. Time current relay characteristics per MIL-PRF-83536.
8. Temperature range:
Non-operating -62° C to +95° C
Operating -54° C to +71° C
SERIES KA
NUMBERING SYSTEM
KA - A
1
F
Basic series designation__________________________|
|
|
|
1-Mounting Style (A,D,G,J,W)__________________________|
|
|
2-Terminal Types (1,2,4)__________________________________|
|
3-Coil Voltage see coil characteristics (E,F,J,K or T)________|
MOUNTING STYLES
.687
.160
.156
.040
1.000
1.015
1.000
.687 .160
1.015
1.015
1.396
FULL R
6 PLACES
.312
.047
#6-32 UNC-2A
3 STUDS
.375
1.000
1.015
1.015
.937
.150
.625
1.015
1.446
1.718 MAX
.312
MOUNTING STYLE A
MOUNTING STYLE D
MOUNTING STYLE G
FOR USE WITH TRACK MOUNT
SYSTEM. NOTE: TRACK SYSTEM
NOT AVAILABLE FROM LEACH.
1.396
FULL R
8 PLACES
1.000
.937
.625
.150
4 PLACES
1.025
MAX
1.446
.089
+
-
.005
1.015
.097
+
.005 THK SILICONE
-
RUBBER GASKET
1.015
.040
1.025 MAX
1.718 MAX
MOUNTING STYLE J
MOUNTING STYLE W
Date of issue:
07/10
- 103 -
Page 3 of 4
TERMINAL TYPES
SERIES KA
Standard Tolerance: .xx ±.03; .xxx ±.010
Date of issue: 07/10
- 104 -
Page 4 of 4
Application notes
RELAYS AND TEMPERATURE VARIATIONS
N°102
Most relay parameters are specified as maximum values over the rated temperature range of the specific relay. Users often
find that key parameters differ significantly at ambient temperature (20-25°C) and sometimes fall into the trap of specifying
their system around these ambient parameters. Additionally the actual temperature experienced by the relay can be far in
excess of existing ambient temperatures due to the heat generated by the coil current and the contact load. Figure 1 is the
summary of temperature effects on relay electrical characteristics.
Temperature
Increase
Decrease
Resistance
UP
DOWN
Current
DOWN
UP
Operating
Voltage
UP
DOWN
Release
Voltage
UP
DOWN
Operate Time
UP
DOWN
Release Time
UP
DOWN
Fig. 1
The following formulas are sometimes useful in calculating the effects shown above.
1. Change in coil resistance due to change of ambient temperature can be calculated by the following formula.
R = R
20
[1 + .0039 (T-20)]
Where: R = Coil resistance at given temperature
R
20
= Coil resistance at 20°C
T = °C Ambient temperature
"Rule of Thumb" : For each 10°C change of temperature, coil resistance will change approximately 4%.
2. High and low temperature pick up voltage:
E
2
= E
1
K
2,
Where: E
2
= Pick Up Voltage at T
2
temperature
E
1
= Pick Up Voltage at 20°C
K
2
= Coefficient of correction found on the graph in Fig. 2 at T
2
Date of issue: 6/00
- 15 -
Page 1 of 2
Microcontroller MCU
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