The technical information provided by Leach International Corporation is to be used as a guide only, and is not meant for publication or as documentation for altering any
existing specification. Dimensions are in inches unless otherwise specified. Rev. 7/2019
KC SERIES
RELAY – NONLATCH
3PDT, 25 AMP
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% at +25° C except types
"C" and "V" +20%, -10%
A
B
C
M
N [7]
R [7]
V [7]
28
29
18
19.8
22.5
7
290
12
14.5
9
9.9
11.25
4.5
70
6
7.3
4.5
5
5.7
2.5
18
48
50
36
38
42
14
890
28
29
18
19.8
22.5
7
290
12
14.5
9
9.9
11.25
4.5
70
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
- Coil to ground
Dielectric strength at altitude 80,000 ft
Insulation resistance
- Initial (500 Vdc)
- After environmental tests (500 Vdc)
Sinusoidal vibration (A and D mounting)
Sinusoidal vibration (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 (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
-70°C to +125°C
50,000 [3]
200,000
1250 Vrms
1000 Vrms
500 Vrms [4]
100 M Ω min
50 M Ω min
0.12 d.a. / 10 to 70 Hz
30G / 70 to 3000 Hz
0.12 d.a. / 10 to 57 Hz
20G /57 to 3000 Hz
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 ± 1 ms
100G / 6 ± 1 ms
10 μs
15 ms max
15 ms max
1 ms max
0.1 ms max [8]
Unless otherwise noted, the specified temperature range applies to all relay characteristics.
2/5
KC SERIES
RELAY – NONLATCH
3PDT, 25 AMP
Dimensions in inches
Tolerances, unless otherwise specified, ± 0.03 in
MOUNTING STYLES
3/5
KC SERIES
RELAY – NONLATCH
3PDT, 25 AMP
TERMINAL TYPES
Not included with relay.
4/5
KC SERIES
RELAY – NONLATCH
3PDT, 25 AMP
DIAGRAMS
With EMF Suppression
[7]
TOL: .XX ±.03; .XXX ±.010
NUMBERING SYSTEM
KC
Basic series designation
1.
2.
3.
4.
Mounting styles
(A, D, J, W)
Terminal types
(1, 2, 4,)
Coil voltage, see coil characteristics
(A, B, C, M, N, R, V)
XXX Designators
-
D
1
A
-
XXX
NOTES
1.
2.
Standard Intermediate current test applicable
For full rated load, max. temp. and altitude use no. 12 wire or larger.
Solder hook relays to be mounted to limit mounting bracket temp. to 160° C.
3.
4.
5.
6.
7.
8.
9.
DC inductive load 10,000 cycles, AC inductive load 20,000 cycles.
500 Vrms with silicone gasket compressed, 350 Vrms all other conditions.
Applicable military specification: MIL-PRF-83536.
Special models available: Dry circuit, high reliability testing, etc.
"N, R & V" coils have back EMF suppression to - 42 volts maximum.
Applies to "N, R & V" coils only
60 Hz load life, 10,000 cycles.
10. Time current relay characteristics per MIL-PRF-83536
11. Relay will not operate, but will not be damaged by application of reverse polarity to coil.
For any inquiries, please contact your local sales representative: leachcorp.com
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