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5
Amp Series
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M3 > Online Tech
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M3
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PDF Tech Info, Schematics and More
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Applications
Freeze Protection, Medical Applications, Food Warming,
Fan Control, Heating Blankets, Thermo-Electric Heaters,
LCD Displays |
| 5
amp. Series
(AC125V/5A, AC250V/3A, DC12V/5A, DC24V/3A)
Each model is available in a double
sealed construction. |
| M3
Two mounting holes
Two lead wires
X or Y contact |
|
Features:
1) 5Amp. capacity in a compact body.
2) Surprisingly low price for a long life and small
differential thermostat. |
| M3(Z)
Two mounting holes
Three lead wires
XZ or YZ |
|
Features:
1) 5Amp. capacity in a compact body.
2) Back contact capacity: 3A standard.
3) Surprisingly low price for a long life and small
differential thermostat. |
| M2
No mounting hole
Two lead wires
C or D rank only |
|
Features:
1) Thin model and C contacts not available.
2) Long life but differential from 8~12deg.
3) Other specifications are the same as M3 Model. |
| M2F
Fuse installed
No mounting hole
Two lead wires
C or D rank only |
|
Features:
1) A fuse connected in series with
the M2 Model to secure safety.
2) Other specifications are the same as M2 Model.
3) Choose fuse of temperature 25¼C higher than the thermostat
set temperature.
4) Standard fuse temperatures are 76/102/115/130¼C. |
| MQT5S/
MQT5S(Z)
Sealed type
3 leads for MQT5S(Z) |
|
Features:
1) By applying double sealing, the model is almost
water tight. However, moisture seeping in due to capillarity
from the tip of the lead wire cannot be prevented.
Care must be taken not to wet the tip of the lead
wire.
2) Back contact capacity:3A.
|
Ratings and Characteristics:
Relation between Operating Voltage/Differential Rank and
Contact Capacity (based on 100,000 operations)
|
Voltage |
Current |
M3/M3Z/5S/5SZ |
M2/M2F |
|
Diffential
rank |
Current |
Differential
rank |
Current |
AC125V |
DC12V |
D |
50mA
~ 5A |
D |
50mA
~ 6A |
C |
50mA
~ 5A |
C |
50mA
~ 6A |
|
B |
50mA
~ 4A |
|
|
A |
50mA
~ 3A |
|
|
AC250V |
DC24V |
D |
30mA
~ 3A |
D |
30mA
~ 4A |
C |
30mA
~ 3A |
C |
30mA
~ 4A |
|
B |
30mA
~ 2A |
|
|
A |
30mA
~ 1.5A |
|
|
– |
DC48V |
D |
20mA
~ 2A |
D |
20mA
~ 2.5A |
C |
20mA
~ 2A |
C |
20mA
~ 2.5A |
|
B |
20mA
~ 1.5A |
|
|
A |
20mA
~ 1A |
|
|
|
AC50V |
less
than
6V DC |
D |
50mA
~ 8A |
D |
50mA
~ 10A |
C |
50mA
~ 8A |
C |
50mA
~ 10A |
|
B |
50mA
~ 6A |
|
|
A |
50mA
~ 4A |
|
|
NOTE
: 1."5 Ampere Series" represents the standard
maximum current of M2 Model at AC125V.
2.Maximum current is limited slightly lower for M3 and
5S Models due to heat generated inside the switches.
3.Crossbar contact is not available for the 5 Ampere Series.
| Maximum
operating voltage: |
AC250V
max., DC48V max. |
| Temperature
setting range: |
-10°C-110°C
(tolerance/differential will change in the higher temp.
above 75°C.) |
| Differential:
|
rank
A …… 3 ± 1 (2~4)
rank B ……4.5 ± 1.5 (3~6)
rank C ……6.5 ± 1.5 (5~8)
rank D ……10 ± 2 (8~12) |
| Contact
configuration: |
1b
(X), or 1a (Y)
1c (XZ or YZ) for M3(Z) /5S(Z). |
| Operating
temperature range: |
-30°C~105°C
(standard),-30°C~125°C(special) (no icing, no
condensing)(use within 60 degrees above the set temperature.) |
| Temperature
setting tolerance: |
Standard
tolerance for temperature up to 50°C is ±3 |
| Insulation
resistance: |
100MΩ
or more |
| Contact
resistance: |
30mΩ
or less (lead wire resistance not included) |
| Voltage
tolerance: |
AC2000V
for 2sec. (600V for 1minute between contacts) |
| Vibration
tolerance: |
Selected
from JIS·C·0911-1984
Constant vibration; 50Hz fixed/0.2mm fixed (1G)
Sweep vibration; 10~55Hz/0.35mm fixed ( 0.1~2.2G)
Withstands 1 hour each in directions X, Y and Z. |
| Impact
tolerance: |
No
damage when dropped three times from the height of 40cm
onto a concrete floor (about 70G).
No damage for double sealed model when dropped three
times from the height of 1m onto a concrete floor (about
240G).
Withstands substantial impact after being put in a package
or mounted in equipment. |
| Life:
|
2
million mechanical operations, 100,000 electrical operations
at rated load. |
| Handling
precautions: |
The
thermostat withstands vibration and impact applied along
Y and Z axis, but does not tolerate impact from X direction. |
NOTE:
"5 Ampere" refers to the value for C and D rank
products at AC125V/DC12V.
Please note that the contact capacity of A and B rank products
is a little smaller than 5A.
Double
Sealed Construction (improvement in water
resistance and impact resistance increased)
1.
Increased water resistance
Covering a thermostat with a plastic case and sealing
its lead wires with plastic sealant is a widely accepted
approach to achieve a dust-proof and water-resistant structure.
Our thermostats, such as the MQT series in this catalogue,
are of this design. Repeated material expansion and contraction,
and internal air pressure changes caused by thermal cycle
may lead to wear of plastic case and sealant, which consequently
deteriorates sealing performance. Our double sealed design,
using a vinyl tube, withstands severe environmental conditions
for long periods of time.
2. Increased impact resistance Electrical components such
as relays and motors are not very resistant against shocks.
Dropping electrical components usually results in damage
and subsequent malfunction. Products in the MQT Series
are no exception. MQT Series products are fragile to impacts
in X direction and more resistive to Y and Z direction
impact. However, with the double sealing method using
soft vinyl tubes, impact resistance is guaranteed for
regular usage
Impact resistance: 240G
NOTES:
Water resistance is achieved by double sealed construction
using a soft vinyl tube.
1.The soft vinyl tube must be taken care of to avoid damage.
2.Do not expose vinyl tube to the direct sunlight.
|
Control
Thermostats
8415
Mountain
Sights Avenue, Montreal (Quebec), H4P 2B8 Canada
