Series MCT 440
hermetically sealed relay
for automotive and railway applications
4 NO non latching relay
General characteristics
N° of pole
4 normally open double break contacts
Volume
Mass
17 cm
3
71 g
Switching characteristics
Mechanical life
Nominal contact rating on power supply 50-90 V
for 10
6
operations
1 x 10
6
operations
3 A resistive load
1 A inductive load
L
(
= 30 ms )
R
Operating time at 25° C
Release time at 25° C
Bounce time
15 ms max
10 ms max
2 ms max
Environmental characteristics
Temperature range
Vibration
Shock
Opening contact maxi
Leak rate
- 40° C to + 85° C
20 g 2 000 Hz
200 g 6 ms
10 µs
≤
1 x 10
- 8
atm . cm
3
/ s
Electrical characteristics
Contact voltage drop at 10A under 6 vdc
- Initial
- After life
Dielectric strength (see level)
Between coils and case
Between all others case
After life all points
Insulation resistance under 500 Vdc
-Initial
-After life
150 mV max
200 mV max
1 250 V rms
1 500 V rms
1 000 V rms
> 1 000 M
Ω
> 1 00 M
Ω
22, rue des Chaises
45 140 SAINT JEAN DE LA RUELLE - FRANCE
www.stpigroup.com
Tél : +33 (0)2 38 70 45 00
series MCT 440
page 1 / 10
Switching capacities for different life cycles as a fonction of voltage
Resistive load
Amperes
40
20
10
8
6
4
2
100 cycles
100 000 cycles
400 000 cycles
1
.8
.6
1 000 000 cycles
.4
.2
.1
10
20
30
40
60
80 100
150
200
Vdc
22, rue des Chaises
45 140 SAINT JEAN DE LA RUELLE - FRANCE
www.stpigroup.com
Tél : +33 (0)2 38 70 45 00
series MCT 440
page 2 / 10
Switching capacities for different life cycles as a fonction of voltage
Inductive load
Amperes
40
20
10
8
6
4
2
5x10
-3
x 100 cycles
30x10 x 100 cycles
1
.8
.6
.4
5x10 x 10 cycles
15x10 x 10 cycles
30x10 x 10 cycles
60x10 x 10 cycles
.2
-3
6
-3
6
-3
6
-3
6
-3
.1
10
20
30
40
60
80 100
150
200
Vdc
In order to calculate switching capacity during an other number of cycles N or another L/R
consider that N x L / R = Constant
For example :
the read value of 2 A under 80 V on the curve L / R 5x10
-3
for 10
6
cycles can be interpreted by
- L / R= 5x10
-3
for 10
6
cycles
- L / R= 10x10
-3
for 5.10
5
cycles
Attention: the number of cycles cannot be higher than 2 x 10
6.
22, rue des Chaises
45 140 SAINT JEAN DE LA RUELLE - FRANCE
www.stpigroup.com
Tél : +33 (0)2 38 70 45 00
series MCT 440
page 3 / 10
Part numbering system
M C T * 4 4 0 1 E 2 B ***
RELAY TYPE
OPTION
S
: with internal voltage suppressor
MODEL
440
:
4 normally open contact «double break»
IDENTIFICATION
1
: Standard
COIL CODE
B
,
D
,... see page 5
MOUNTING STYLES
1
,
2
,... see pages 7, 8, 9
TERMINATION STYLES
A
,
B
,... see page 6
Special instructions or specifications (on request)
22, rue des Chaises
45 140 SAINT JEAN DE LA RUELLE - FRANCE
www.stpigroup.com
Tél : +33 (0)2 38 70 45 00
series MCT 440
page 4 / 10
Connection diagram
X2
D
C
B
A
3
Blue bead
1
X2
D
C
B
A
3
Blue bead
X1
1
X1
Series MCT 440
Series MCT S 440
with internal voltage suppressor
Viewed from terminals side
(unenergized coil)
Coil characteristics
DC
COIL CODE
Nominal coil voltage
Maximum operating coil voltage
Minimum operating coil voltage
Max pull in voltage at 85° C
Mini hold voltage at 85° C
Mini drop out voltage at - 40 °C
Coil resistance ( ohms ± 8% at 25° C )
Max coil transient suppression
B
12
15
8,4
8,3
4,7
1
70
44
D
24
30
16,8
16,6
9,5
2
210
44
E
36
45
25,2
24,9
14,2
3
550
122
F
48
60
33,6
33,2
19
4
955
122
R
55
68,5
38,5
38
21,6
4,6
1120
122
H
72
90
50,4
49,7
28,2
6
1920
203
L
110
137,5
77
76
43,2
9,2
4500
203
22, rue des Chaises
45 140 SAINT JEAN DE LA RUELLE - FRANCE
www.stpigroup.com
Tél : +33 (0)2 38 70 45 00
series MCT 440
page 5 / 10
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