½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½
½
½½½½½½
½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½double
pole receptacle is
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
connection.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½.
½½½½
½½½½
½½½
½½
½
½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½crimping ½½½½½½
½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Cross bar contacts
For ordinary contacts, the maximum current is indicated as 2 or 5 A max. etc. What is the minimum current? This is generally around 50~100 mA. Cur-
rents below this range are covered by special contacts for micro current.
The minimum current for ordinary contacts of our 2 Amp./5 Amp. series is also 50 mA. For currents below 50 mA, Crossbar
contacts, called K contacts, are applied. Since the current range covered by cross contacts is 1~100 mA, 50~100 mA is covered
both by ordinary contacts and micro capacity contacts. As this range is a recommended standard, ordinary contacts can be used
for 20 mA as well, however, the possibility of contact failure will increase. Though the rating is indicated as 1~100 mA for crossbar
contacts, these contacts may also be used in any amperage out of this range. 1~100 mA is the range that 100% conduction is
ensured. The structure of crossbar contacts is that of two noble metal contacts in trapezoidal shape, contacting with each other crosswise. The benefit of
this structure is that there will be smaller possibility for contact failure because it can assure the large contact pressure per unit area.
• Contacts which open when the temperature rises are designated as X, and those which close
when the temperature rises are designated as Y. Shown in the diagram is the temperature at
which the contacts operate when the temperature rises (the high temperature side).
• X [Xbar] and Y [Ybar] are used for contacts that operate when the temperature falls (the low
temperature side). X [Xbar] indicates the contact that closes when the temperature falls. Y
[Ybar] indicates the contact that opens when the temperature falls. Z indicates transfer con-
tacts. XZ is the main contact that opens when the temperature rises. XZ [Xbar Z] is the main
contact that closes when the temperature falls.
• C is the standard rank designation for X contacts and B is standard for Y contacts. Please
consider X is C ranked and Y is B ranked, unless otherwise indicated.
Contact type indication
Model designation method
CONTROL THERMOSTATS (MQT)
2 AMP SERIES
MQT8H K35XC represents a thermostat with crossbar contacts (K means crossbar
contact). For 5 Amp. Series with a back contact, a model name will be, for ex-
ample, M3 70XZB, where Z means contact with the back contact.
8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, Canada
Tel:
(514) 739-3274 • 1-800-561-7207 •
Fax:
(514) 739-2902 •
E-mail:
sales@cantherm.com
Website:
www.cantherm.com
| Division of Microtherm
2010/August MQT
2 Amp. Series
Ratings for Standard Temperatures.
(AC125V/2A, AC250V/1.3A, DC12V/2A, DC24V/1.3A) -10°C~110°C
All models are available with double sealed construction.
type
photo
drawing
dimensions (mm)
features
1.) Representative model of the 2 Amp.
series.
2.) Long life and small differential
thermostat.
3.) It can be mounted with only one
screw. It is most suitable for outside air
temperature detection.
½½½½½½½½½½ ½½½½½½ ½½½½½
½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½ ½½½½½½½½½½
½
½½½
½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½ ½½½½½½½½½½½
½½½½½
½½½½½½½½½½½½½½½½½½½½½
With a
mounting tab
Two lead wires
MQT8K
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½ ½ ½½½½½ ½
½
½½
½½
½½
½
½½
½½
½½
½ ½ ½½½½ ½ ½
½
½½
½½
½½
½½
½
½½
½½
½½
½½
½½½ ½½½½ ½ ½
½
½½
½½
½½
½
½½
½½
½½
½½ ½ ½½½½½ ½½
½
½½
½½
½½
½
½½½ ½½½½½ ½½
½
½
½½½ ½½½½½ ½ ½½
½
½
*
No
mounting tab
Two lead wires
½
½
½
½
½
½
½
½½½
½
½
½
½
½
½
½½½
½
½
½
½
½
½
½½½
½
½
½
½
½
½
½½½½
½
½
½
½½
½½
½½
½½
½½
½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
MQT8H
*
MQT8KT
1.) It is suitable for insertion into heater
pads, etc.
2.) The internal structure is the same as
MQT8K.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½(100,000
cycle life is standard)
½½½½½½½
½½½½½½½
½½
½½
½
½
½
½
½
½
½
½
½
½
½
½
½
½½½½½½½½½½½½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½½½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½½½
½½
½½½½
½½
½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½
½
½
½
½
½
½
½
½
½
½
½½½½½½½½½½½½½½½½½ ½½½½½½½½½½½½½½½½½½½½½½½½½½½½ ½½½½½½½½½½½½½½½½½ ½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
1.) MQT8K with a tab terminal.
2.) Install a lead of your desired length
into the receptacle and use it by
inserting the thermostat.
3.) We have the receptacle available.
The terminal is #110, Faston
½½½½ ½½ ½½½½½
MQT8K with tab terminals.
With a mounting hole.
Tab size:#110
½½
½½½
½
½½
½½½
½
½½
½½
½
½½
½½
½
½½½½ ½½ ½½½½½
½½½½ ½½ ½½½½½
MQT8K with tab terminals.
No mounting hole.
Tab size:#110
The terminal is #110, Faston
MQT8HT
The usage is the same as MQT8KT.
The only difference is that it has no
mounting hole.
½½½½½ ½½ ½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½
Spark suppression will be required for a load in DC.
½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½
Fuse installed.
Two lead wires. With a
mounting hole.
Fuse installed. No mounting
hole.
Two lead wires
MQT11K
MQT11H
*
1.) Cases of MQT8K and 8H are wid-
ened and temperature fuse is connected
in series inside the case for dual safety.
2.) Standard specifications for the fuse
temperature is 76°C/108°C/115°C/
133°C/145°C.
3.) As for the fuse temperature, select
the one with a temperature 25°C or
more higher than the preset
temperature of the thermostat.
1.) While a near complete sealing
is achieved by double sealing (DS),
moisture intrusion by capillary action at
the tip of the lead cannot be avoided.
Be careful not to have water splash on
the lead tip.
½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½
½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½½½½½½½½½½
½
Double sealed construction
MQT8H (DS)
½½½½½½½½½½½½½½½½½
½
½
½½½½
½½½½½½½½½½½½½½½½½½½½
½
*
*
Regarding the lead;
½½½½½½½½½½½½½½½½½
½
½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½ ½½½½½½½½½½½
½½½½½½½½½½½½½½ ½½½½½ ½½ ½½½½½½½½
1b(X) N Closed, or 1a(Y) N Open
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½non½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½ ½ ½ ½ ½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½
½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½
AWM1015/AWG22 black 150mm length is the standard for 75°C or lower
AWM3271/AWG22 gray 150mm length is the standard for 76°C or higher
½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½double
pole receptacle is
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
connection.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½.
½½½½
½½½½
½½
½