1/2 DISC, SQUARE AND MINIATURE THERMOSTATS

Transcription

1 1/2 DISC, SQUARE AND MINIATURE THERMOSTATS Purpose (1) Temperature regulator (controller): Maintains a certain degree of temperature. (2) Excess temperature rise protector (limiter/protector): Turns off the heat source when the temperature rises above a particular level. (3) Temperature detector: Signals when the set temperature has been reached and causes another operation to occur. These are the main purposes of the thermostat. These thermostats are bimetal thermostats. The temperature switch senses the temperature through the bimetal and controls the electricity contacts (turning them on or off). There are various kinds of devices for temperature control and measurement. Operating principles Bimetal Two metals (a low expansion metal and a high expansion metal) are milled into a single sheet using a roller Bimetal Bimetal is a compound word combining "bi" (a prefix meaning "two") and "metal." Pressurized bonding: Bonding by cool or hot rolling (molecular bonding). No adhesive is used. Materials: High expansion metal contains an iron alloy (Fe) and nickel (Ni) with added substances Cr, Mn, and Mg; low expansion metal contains iron (Fe) and nickel (Ni) as the main materials for Invar (Ni35-Fe) Bimetal bends in one direction as the temperature rises and in the other direction as it falls. Force arises where the movement is controlled, and in the thermostat the set point pressure exerts a repelling force. Types, structures and purposes of bimetal thermostats Types and structures Laminated type: Snap disc type: Protector type: In this type, parts have been laminated together and fastened with a rivet, facilitating temperature variations in small increments. In this type, parts are contained in a covered case. It has a relatively large differential, and uses a low cost snap disc to prevent excessive temperature rises. This type is contained in a covered case, with, a snap disc integrated into the electric circuit for the detection and prevention of temperature rises or overcurrent situations. Applications Home electric appliances: Household goods: Gas and oil: Others: Industrial equipment: Home electric appliances: Kitchen goods (Computerized hot water kettles, coffee makers, ovens, hot plates, rice-cake makers, etc.) Heating devices: Electric space heaters, electric heating pads, electric kotatsu (coffee-table type heaters with coverlets), panel heaters, electric mats, etc.) Others: Ironing presses, hair dryers, vacuum cleaners, futon dryers, etc.) Lavatory seats, washlets (a seat-type of bidet incorporating seat warming and warm water irrigator), battery chargers, etc.) Bathtub boilers, water heaters, floor warmers, fan heaters, space heaters, etc.) Copy machines, automatic vending machines, automobiles, motorboats, marine jets, etc. Construction tools, road signs, welding machines, etc.

2 Snapper MMG-118 Gas-certified products Hermetically sealed type, sealed type, high reliability, vibration control spring (B type), minute current thermostat (C type) Bath boiler, water heater, gas appliance, outboard motor, etc. MMG-118CXIO MMG-118CXIL Temperature setting range B type: C/Q type: 125 VAC, max. 3 A (resistance load) 24 VDC, max. 1 A (resistance load) 40 VDC, max. 500 ma (resistance load) Selection of one-point temperature (0 to 250 C) Differential 10-25K Lower than 150 C, operating temperature ±4 C/return temperature ±7 C B type: C/Q type: B type: C/Q type: 150 C or greater, operating temperature ±6 C/return temperature ±8 C 200 C or greater, operating temperature ±8 C/return temperature ±10 C 70 mω or less 10 mω or less 1,200 VAC/minute 1,000 VAC/minute Thermal resistance 250 C More than 10,000 times [under rated load] * The differential varies slightly depending on the operating temperature. * In types B and C, the maximum temperature in gas-certified products is 180 C.

3 MMG-602 Products registered in the electric apparatus parts/materials registration system, gas certificate products UL, CSA, VDE, EN60730 or CCEE certified products General-purpose low cost, compact, large capacity (S type), minute current (K type) Electronic oven, heating unit, water heater, etc. MMG-602SXRLQE S type: K type: 125 VAC, max. 15A, resistance load 250 VAC, max. 8A, resistance load 30 VDC, max. 1A, resistance load 120 VAC, 125 VA (pilot duty) Temperature setting range One-point temperature setting from 0 to 150 C Differential 10-25K S type: K type: Operating temperature ±4 C/return temperature ±7 C 1,500 VAC/minute 1,200 VAC/minute Thermal resistance 150 C * The differential slightly varies depending on the operating temperature.

4 MMG-603 Products registered in the electric apparatus parts/materials registration system, gas certificate products UL, CSA, VDE, EN60730, CCEE certificate products Return manual reset, general-purpose low cost, compact, large capacity (A type), minute current (K type) Electronic oven, heating unit, water heater, etc. MMG-603AXTLIO A type: K type: 125 VAC, max. 15A, resistance load 250 VAC, max. 10A, resistance load 30 VDC, max. 1A, resistance load 120 VAC, 125 VA (pilot duty) Temperature setting range One-point temperature setting from 50 to 150 C Operating temperature ±5 C [Return manual reset] A, U type: 1,500 VAC/minute K type: 1,200 VAC/minute Thermal resistance 150 C 5,000 times or more [under rated load]

5 MMG-621 Products registered in the CMJ (electric apparatus parts/materials registration system), UL, C-UL, VDE (EN60730), S.O.D. specification compliant product, under CQC application Return manual reset, general-purpose low cost, compact, large capacity (A type), minute current (K type) Copier, LBP, etc. MMG-621AXRIMO 125 VAC, max. 15A, resistance load 250 VAC, max. 10A, resistance load Temperature setting range One-point temperature setting from 0 to 200 C Differential 10-25K 150 C or less Operating temperature ±4 C/Return temperature ±7 C 151 C or greater Operating temperature ±5 C/Return temperature ±8 C 1,500 VAC/minute Thermal resistance 200 C * The differential slightly varies depending on the operating temperature.

6 MMG-622 Products registered in the electric apparatus parts/materials registration system UL, C-UL, VDE, EN60730 or CCEE certified products Compact, large-capacity, general-purpose low cost Electronic oven, heating unit, water heater, etc. MMG-622AXRLQE MMG-622PXRMQO A, P type: K type: 125 VAC, max. 15A, resistance load 250 VAC, max. 10A, resistance load 30 VDC, max. 1A (resistance load) 120 VAC, 125 VA (pilot duty) Temperature setting range One-point temperature setting from 0 to 185 C Differential 10-25K 150 C or less Operating temperature ±4 C/Return temperature ±7 C 150 C or greater Operating temperature ±5 C/Return temperature ±8 C A, P type: 1,500 VAC/minute K type: 1,200 VAC/minute Thermal resistance 185 C * The differential slightly varies depending on the operating temperature. Tel.: (+36) Fax: (+36) sales@mmgszek.hu

7 MMG-623 Products registered in the electric apparatus parts/materials registration system, gas certificate products UL, C-UL certified products Manual-reset, high temperature (200 degree C) complied, large current High temperature operation equipment such as the boilers and heaters MMG-623AXRGQL 125 VAC, max. 16A, resistance load 250 VAC, max. 16A, resistance load Temperature setting range One-point temperature setting from 50 to 200 C 150 C or less operating temperature ±5 C Greater than 150 C operating temperature ±4% 1,500 VAC/minute Thermal resistance 200 C 6,000 times or more [under rated load] * For specifications over the specifications above please contact us. * UL standard models are partly different from the specifications above. Please contact us for details.

8 MMG-625 Products registered in the electric apparatus parts/materials registration system UL, C-UL, VDE or EN60730 certificate products High temperature, compact large capacity, ceramic body Electronic oven, heating unit, water heater, etc. MMG-625AXRLQE 125 VAC, max. 15A, resistance load 250 VAC, max. 10A, resistance load Temperature setting range One-point temperature setting from 0 to 250 C Differential 15-40K 150 C or less Operating temperature ±4 C/Return temperature ±7 C 150 C or greater Operating temperature ±5 C/Return temperature ±8 C 200 C or greater Operating temperature ±7 C/Return temperature ±10 C A, P type: 1,500 VAC/minute K type: 1,200 VAC/minute Thermal resistance 290 C

9 MMG-628 Gas certificate products UL certified products Drip-proof, compact design, general purpose, low cost Suitable for wide range of applications such as gas and oil appliances, fuel cell, etc. MMG-628AXSSAS 125VAC, max. 10A(A type) or 6A(B type) A and B type 250VAC, max. 5A 24VDC, max. 5A K type 40VDC, max. 0.5A 24VDC, max. 1A Temperature setting range One-point temperature setting from 0 to 130 C Operating temperature ±5 C Return temperature ±7 C (except for lead wires) 1,500 VAC/minute Thermal resistance 130 C * For specifications over the above specifications please contact us. * For small current model, please contact us. * UL standard models being on preparation are partly different from the specification above. Please contact us for details.

10 Snap action leaf type MMG-415 Product under utility model application and subject to design registration Changeable temperature system, contact open-close snap action Kotatsu (electric foot warmer with cover), heating pad MMG-415BXAS2 Temperature setting range B type: L type: 125 VAC, max. 500 W, lamp load 125 VAC, max. 600 W, lamp load C Differential 7-15K 100 C or less (Operating temperature ±4 C) 101 C or greater (Operating temperature ±5 C) 1,200 VAC/minute or 1,500 VAC/minute Thermal resistance 130 C More than 10,000 times [under rated load]

11 Thin shape disk type MMG-630 Products registered in the electric apparatus parts/materials registration system, Gas certificate products Certified thermal fuse, UL certificate product High temperature, compact large capacity, ceramic body type Electric carpet, floor heating, water heater, vending machine, etc. MMG-630AXAWL MMG-630AXOSR 125 VAC, max. 8A, resistance load 125 VAC, max. 8A, resistance load Temperature setting range One-point temperature setting from 0 to 120 C Differential 8-15K Thermal resistance Operating temperature ±5 C/Return temperature ±5 C 70 mω or less (this value varies depending on the thermal fuse and lead length) 1,200 VAC/minute 130 C (except the thermal fuse and lead) * The differential slightly varies depending on the operating temperature. * For details of lead length, various leads with terminals or ream types 2-6, contact us separately. * When selecting a thermal fuse, consider a tolerance of +30 C or more for the thermostat.

12 MMG-631 UL certificate product Slim thermostat with built-in thermal fuse and outgoing 4.8 mm leads Electric carpet, floor heating, water heater, etc. MMG-631AXBL 125 VAC, max. 8A, resistance load 250 VAC, max. 4A, resistance load Temperature setting range One-point temperature setting from 0 to 120 C Differential 8-15K Thermal resistance Operating temperature ±5 C/Return temperature ±5 C 80 mω or less (this value varies depending on the thermal fuse and lead length) 1,200 VAC/minute 130 C (except the thermal fuse and lead) * The differential slightly varies depending on the operating temperature. * For details of lead length, various leads with terminals or ream types 2-6, contact us separately.

13 Printed circuit board (PCB) MMG-802 Products registered in the electric apparatus/material registration system UL, C-UL, VDE or EN60730 certificate product Microminiature, slim, space-saving thermostat (with temperature sensor) ideal for printed circuit boards (PCB) LCD projector, power supply equipment, printed circuit board (PCB), etc. MMG-802AX 125 VAC, max. 1A, resistance load 48 VDC, max. 1A, resistance load Temperature setting range Differential One-point temperature setting from 40 to 120 C (5K intervals) 15K Operating temperature ±5 C/Return temperature ±7 C at 1 A DC 1,200 VAC/minute between cover and terminal(s) Thermal resistance 125 C * The microminiaturized thermostat is ideal for printed circuit boards.

14 High temperature, high response MMG-828 Under the preparation for seversal common certifications Insulation-enhanced compact design, S.O.D. specification compliant model Office automation equipment such as copier, printer, laser MFP, etc. MMG-828AXAA (registance load) A type K type 125VAC, Max. 16A (Min. 200mA) 250VAC, Max. 10A (Min. 200mA) 24VDC, Max. 1A (Min. 5VDC 1mA) Temperature setting range One-point temperature setting from 180 to 290 C (An example) ±7 C or more 1,500 VAC/minute Thermal resistance 300 C (With S.O.D. spacefication) 10 times or more [under rated load] * For the temperature tolerance narrower than ±7 C, please contace us. MMG Autó- és Domotechnikai Kft Palánki út Szekszárd Hungary Tel.: (+36) Fax: (+36) sales@mmgszek.hu