(100,000 cycle life is standard) Spark suppression will be required for a load in DC. 1b(X) N Closed, or 1a(Y) N Open non double pole receptacle is connection crimping 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 benefi t of this structure is that there will be smaller possibility for contact failure because it can assure the large contact pressure per unit area. Contact type indication Model designation method 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). CONTROL THERMOSTATS (MQT) 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- 2 AMP SERIES 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 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- consider X is C ranked and Y is B ranked, unless otherwise indicated. 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) -10C~110C All models are available with double sealed construction. drawing type photo features dimensions (mm) 1.) Representative model of the 2 Amp. series. MQT8K 2.) Long life and small differential With a thermostat. mounting tab 3.) It can be mounted with only one Two lead wires screw. It is most suitable for outside air temperature detection. * MQT8H (100,000 cycle life is standard) 1.) It is suitable for insertion into heater No pads, etc. mounting tab 2.) The internal structure is the same as Two lead wires MQT8K. * 1.) MQT8K with a tab terminal. MQT8KT 2.) Install a lead of your desired length MQT8K with tab terminals. into the receptacle and use it by With a mounting hole. inserting the thermostat. Tab size: 110 3.) We have the receptacle available. The terminal is 110, Faston MQT8HT The usage is the same as MQT8KT. Spark suppression will be required for a load in DC. MQT8K with tab terminals. The only difference is that it has no No mounting hole. mounting hole. Tab size: 110 The terminal is 110, Faston 1.) Cases of MQT8K and 8H are wid- MQT11K ened and temperature fuse is connected Fuse installed. in series inside the case for dual safety. 1b(X) N Closed, or 1a(Y) N Open Two lead wires. With a 2.) Standard specifications for the fuse non mounting hole. temperature is 76C/108C/115C/ 133C/145C. MQT11H 3.) As for the fuse temperature, select Fuse installed. No mounting the one with a temperature 25C or hole. more higher than the preset Two lead wires * temperature of the thermostat. 1.) While a near complete sealing is achieved by double sealing (DS), MQT8H (DS) moisture intrusion by capillary action at Double sealed construction the tip of the lead cannot be avoided. Be careful not to have water splash on the lead tip. * * Regarding the lead AWM1015/AWG22 black 150mm length is the standard for 75C or lower AWM3271/AWG22 gray 150mm length is the standard for 76C or higher double pole receptacle is connection crimping