SERIES KCA
ENGINEERING DATA SHEET
RELAY - NONLATCH - AC COIL
3 PDT, 25 AMP
All welded construction
Contact arrangement
Designed to the
performance standards of
3 PDT
MIL-PRF-6106
PRINCIPLE TECHNICAL CHARACTERISTICS
Contacts rated at
Low level, 28 Vdc; 115
Vac, 400 Hz, 1Ø and
115/200 Vac, 400 Hz, 3Ø
0.188lb max
1.01in x 1.01in x 1.00in
Weight
Dimensions
Hermetically sealed, corrosion resistant metal can.
Detail specifications and ordering data appear on the following
pages.
APPLICATION NOTES:
102
007
APPLICABLE SOCKET:
SO-1062-8917
SO-1057-8912 (D-MOUNT)
CONTACT ELECTRICAL CHARACTERISTICS
Contact rating
per pole and load
type [1]
Resistive [3]
Inductive [2]
Motor
Lamp
Overload
Rupture
Load current in Amps
@28 Vdc
25
12
10
5
50
60
@115 Vac
400 Hz
25
15
10
5
80
100
@115/200 Vac
400 Hz, 3Ø
25
15
10
5
80
100
@115/200 Vac
60 Hz, 3Ø [7]
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
- 154 -
Page 1 of 4
COIL CHARACTERISTICS
Vac 400 Hz
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 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
E
28
30
F
115
122
Vac 50 thru 400 Hz
J
28
30
K
115
122
SERIES KCA
Vac 400 Hz
T
230
248
180
185
195
60
22
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
- Coil to ground
Dielectric strength at altitude 80,000 ft
Insulation resistance
- Initial (500 Vdc)
- After environmental tests (500 Vdc)
Sinusoidal vibration (A, D, E and W mounting)
Sinusoidal vibration (J mounting)
Random vibration
- Applicable specification
- Method
- Test condition - A, D and E mounting
- Test condition - G and J mounting
- Duration
Shock (A, D, E 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
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
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
1250 Vrms
1000 Vrms
500 Vrms [4]
-70°C to +125°C
50,000 [2]
200,000
Weight maximum
0.188lb
Unless otherwise noted, the specified temperature range applies to all relay characteristics.
Date of issue:
0710
- 155 -
Page 2 of 4
NOTES
[1] Standard Intermediate current test applicable.
[2] DC inductive load 10,000 cycles, AC inductive load 20,000 cycles.
[3] For full rated load, max. temp. and altitude use no. 12 wire or larger.
Relays to be mounted to limit mounting bracket temp. to 135° C.
[4] 500 Vrms with silicone gasket compressed, 350 Vrms all other conditions.
5. Reference military specification: MIL-PRF-6106 and MS27743.
6. Special models available upon request.
[7] 60 Hz load life 10,000 cycles.
[8] Temperature range:
Non-operating -62° C to +95° C
Operating -54° C to +71° C
9. Time current relay characteristics per MIL-PRF-6106.
SERIES KCA
NUMBERING SYSTEM
KCA- A
4
F
Basic series designation__________________________|
|
|
|
1-Mounting Style (A,D,E,J,W)__________________________|
|
|
2-Terminal Types (1,2,4) [1]______________________________|
|
3-Coil Voltage see coil characteristics (E,F,J,K or T)________|
MOUNTING STYLES
Date of issue: 07/10
- 156 -
Page 3 of 4
TERMINAL TYPES
.250
2 PLACES
.270
9 PLACES
.250
2 PLACES
SERIES KCA
.270
9 PLACES
.062
+
.002 DIA
-
2 PLACES
SILICON RUBBER GASKET
.062
+
.001 DIA
-
2 PLACES
.050
+
.005
-
.093
+
.003 DIA
-
9 PLACES
TERMINAL TYPE 1
FINISH:
CASE-PAINTED LEACH BLUE
TERMINALS-TIN/LEAD
.093 DIA
+.002 -.001
9 PLACES
TERMINAL TYPE 4
.300
+
.020
-
2 PLACES
.625
+
.020
-
3 PLACES
FINISH:
CASE-PAINTED LEACH BLUE
PINS-GOLD PLATED
.375
+
.020
-
6 PLACES
.040
+
.002 DIA
-
2 PLACES
.093
+
.003 DIA
-
9 PLACES
TERMINAL TYPE 2
FINISH:
CASE-PAINTED LEACH BLUE
TERMINALS-TIN/LEAD
SCHEMATIC DIAGRAM
A3
A2
A1
B3
B2
B1
C3
C2
C1
X1
X2
STANDARD TERMINAL LAYOUT
.300
.450
.150
1
2
3
C
WIRING DIAGRAM
C1
C2
C3
.600
X2
B
X1
A
B1
X2
B2
B3
CONTRASTING BEAD
.432
.234
X1
A1
A2
A3
.630
CONTRASTING BEAD
COIL POLARITY NOT APPLICABLE
STD. TOL: .XX ±.03; .XXX ±.010
Date of issue:
07/10
- 161 -
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
51mcu
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