1. www.rainbowelec.co.kr
Head Office & Factory CHINA OFFICE & FACTORY
#303-204 BUCHEON TECHNO PARK-III, 36-1 SAMJUNG-DONG, 18 HUANGHE ROAD, ECONOMIC & TECHNICAL DEVELOPMENT
Yellowpage 2009. 11.
OJUNG-KU, BUCHEON-CITY, GYEONGGI-DO, KOREA ZONE, LAIXI-CITY, QINGDAO, CHINA
Tel : +82-32-624-2288 Tel : +86-532-8849-3930
Fax : +82-32-624-2299 Fax : +86-532-8849-3932
E-mail : rainbowelec@hanmail.net
Website : www.rainbowelec.co.kr

2. nr:120125
www.rainbowelec.co.kr
Capillary
Thermostat &
Thermometer
ELECTRONICS CO., LTD.

3. www.rainbowelec.co.kr
Introduce
It will soon be 30 years since the first thermostat was produced at Rainbow. Over all these
years we have continually developed products which are innovative and of superior
quality. A continued existence over so many years would not have been possible without
remaining loyal to our belief with regard to our customers, suppliers and partners.
A series of recent motivation such as moving into new building, set-up a ERP system and
electronic payment system makes new era for Rainbow to serve worldwide valuable
customers and partners.
The capability to listen, total commitment, confidence in ourselves and our partners,
respect for work well done, a sense of obligation, a will to develop are all values which
form the core vocation of our company.
On this basis we have historically developed an extensive international network of
customers and suppliers which has positioned RAINBOW as a leader in temperature
control solutions.
Every member of our customer support team is dedicated to one goal - providing you with
knowledgeable assistance, timely response to special requirements, and prompt delivery
of your order.
RAINBOW always welcomes the opportunity to help you, with a unique combination of
knowledgeable and responsive people, quality products and prompt delivery. We are glad
to offer a full online catalog where you will be able to browse and order all of our products.
To guarantee the reliability for all products Rainbow is building and supplying, various
approvals and certificates are ready in place customers required from international
agencies such as UL, VDE, CSA, CE and ISO including RoHS.
Rainbow will be in every single place over the world our customers are present.
CEO_JANGKON KIM

4. History
1983. 02. 15 Rainbow Electronics Co., Ltd founded at Seoul, Korea
Starting to produce a thermostat for Circulating pump control
1987. 06. 20 First Export of the thermostat for refrigerator use to Singapore
1988. 11. 15 Moved into new building in Songnae-dong, Bucheon
1989. 08. 04 Certified KS mark for boiler use thermostat
1996. 12. 05 Certified UL approval from UL Laboratories in USA (File no. E173663)
1999. 03. 30 Nominated as a Promising Advanced Technology Enterprise from Gyeonggi
Province Government
1999. 07. 09 Certified VDE approval from VDE Testing and Certification institute in Germany
40009830
1999. 07. 28 CE Certificate issued under the regulation of EN 60730
2000. 03. 22 Certified CSA approval from CSA International in Canada (1006006/LR115703)
2000. 05. 27 Certified ISO9002 quality system from KTL
2001. 06. 09 ISO 9001 quality system certified from KAB
2001. 06. 20 Newly developed Manual Reset limit Control
2001. 07. 30 Set up a new factory in Qingdao, China, A million units production launched
2002. 03. 11 A design for Insulation cover (TS-series) registered on the Register of the Korean
Intellectual Property Office (No.30-0294172)
2002. 08.08 A design for RST-switch base registered on the Register of the Korean Intellectual
Property Office(No. 30-0305122)
2003. 04 30 A Trademark of Rainbow logo registered (40-0231879)
2003. 05. 23 A design for Enclosure (PTS-) registered on the Register of the Korean
Intellectual Property Office (No.30-0325563)
2005. 05. 17 Awarded a prize of Korean Prime Minister for Exemplary CEO at the SME
2006. 07. 10 Certified as a Technical innovation business (INNO-BIZ) from SMBA
2008. 03.18 Moved into new building (1,780 ) at Samjung-dong, Bucheon-city
2008. 10. 17 Certified VDE approval for RST-series from VDE institute in Germany
2
3

5. INDUSTRIAL CAPILLARY THERMOSTAT :
TS-XXXS
Description
The temperature sensor consists of probe capillary tube, diaphragm and expansion medium.
When sensor is heated, the liquid medium heats up and expands.
The expansion of the medium increases in the closed-circuit system.
The pressure increase is converted into a displacement in the diaphragm
Application
boiler, commercial refrigerators, convector, fryers, electric water heating oven, radiator, sauna, water bed,
cooking appliance
Features
SPDT, 16A 250V, UL,
VDE, CSA, CE approved

6. www.rainbowelec.co.kr
SINGLE POLE SAFETY LIMITER WITH MANUAL RESET :
TSR-XXXSF
Capillary Thermostat & Thermometer
4
Description
5
If the temperature at the probe exceeds the set limit, the snap-action switch is operated
through a transmission mechanism, the circuit is opened and the switch is not closed.
If the temperature drops below the selected set-point by about 50 , the snap action switch
can be manually.
Features
Fast reaction time
Protection Temperature limiter as panel-mounting thermostats
SPST Only
Factory pre-set fixed temperature up to 350
Complies with ROHS
Meets UL requirement
Customized capillary up to 2000mm
Electrical connections with 250 rec female quick connect terminals
Bulb and capillary are 300 series stainless steel
UL approved

7. DESCRIPTION TABLE AND ACCESSORIES:

8. www.rainbowelec.co.kr
HIGH AMPERE THERMOSTAT :
RNTS-XXXCB
Capillary Thermostat & Thermometer
Description
The temperature sensor consists of probe capillary tube, diaphragm and expansion 6
medium.
When sensor is heated, the liquid medium heats up and expands. 7
The expansion of the medium increses in the closed-circuit system.
The pressure increase is converted into a displacement in the diaphragm
Application
boiler, convector, fryers, electric water heating oven, radiator, sauna, water bed, cooking
appliance
Features
High Ampere, 30A
250V

9. RST-THERMOSTAT :
RST-XXXS
Description
The temperature sensor consists of probe capillary tube, diaphragm and expansion
medium.
When sensor is heated, the liquid medium heats up and expands.
The expansion of the medium increases in the closed-circuit system.
The pressure increase is converted into a displacement in the diaphragm
Application
boiler, convector, fryers, electric water heating oven, radiator, sauna, water bed, cooking
appliance
Features
SPDT, 20A 250V, UL,
VDE approved

10. www.rainbowelec.co.kr
INDUSTRIAL THERMOSTAT WITH ENCLOSURE :
PTSC-XXXC
Capillary Thermostat & Thermometer
Description
It is specially designed to mount on the channel for easy installation for the control box of 8
switch board.
9
Application and Features
Suitable to control room control to run a fan or a heater
Control with changeover contact
Screw terminals for un-loosing.
Bulb and capillary in the plastic housing
Temperature control for 0 to 50 or 0 to 90
Operation
A rise in temperature causes the expansion of liquid within the bulb capillary. The liquid acts
on a diaphragm assembly within the plastic housing to open and close electrical contacts

11. INDUSTRIAL CONTORLS :
ITS-050L
Description
Multi-function plastic housing with a Single Pole Double Throw capillary controls.
Features
Suitable for surface mounted, immersion and air application
Customized marking available
Control knob with temperature indication with 0 to 40 , 50 , 60
One Control for Heating and / or Cooling
Control with changeover contact
Corrosion Resistant Enclosure
Local and Remote Sensing Models Available
Meets UL and RoHS requirement.
Operation
A rise in temperature causes the expansion of liquid within the bulb capillary. The liquid acts on a diaphragm
assembly within the plastic housing to open and close electrical contacts.

12. www.rainbowelec.co.kr
FREEZING AND COOLING THERMOSTAT :
LTS-030S
Capillary Thermostat & Thermometer
10
Description
Multi-function plastic housing with a Single Pole Double Throw capillary controls. 11
Feature
Suitable for surface mounted
Control with changeover contact
Meets UL and RoHS requirement.
Application
Freezing and cold storage
Aquariums, Fish tank
Cooling system
Commercial refrigerator

13. REMOTE INDICATING THERMOMETER :
THERMOMETER
TMRB TMSA
Model Size Capillary
TMRB-XXX-32B 50 30mm 1000mm
TMRC-XXX-33H 80 40mm 1500mm
TMSA-XXX-32B 58mm 25mm 42mm 1000mm
TMRC
Description
We can supply a wide range of gauges which can satisfy the application requirements in the
following fields, heating, cooling and household appliances, anywhere remote temperature
and pressure metering is required. All the gauges have modern and functional aesthetic
design, which can be customized upon request and is able to fulfill the most recent design
trends
Features
TMRB-040-32B, TMRB-120-32B
TMSA-040-32B, TMSA-120-32B
TMRC-040-33H, TMRC-120-33H
Temperature range is -40 ~40 or 0 ~ 120
Customized designed printing for temperature marking
Capillary diversifies from 500mm to 2000mm
Compact and light plastic housing

14. www.rainbowelec.co.kr
PECO :
REGULATING / LIMITING CONTROLS
Capillary Thermostat & Thermometer
T103 T125
Description
Regulating controls are used as the primary
operation control. Limiting controls are back-
up controls used in combination with
temperature regulation controls. The
operation point of limit controls is normally set
higher than regulating controls and is
determined by requirements of the
equipment manufacturer.
Common applications for PECO regulating
and limiting controls include: commercial
L117 12
cooking equipment such as coffee brewers, 13
fryers, cookers, and ovens ; industrial equipment such as liquid heating, plating tanks, and processing
equipment ; immersion heaters, duct heaters, booster heaters, etc.
Features
Construction variables to meet diverse specifications
High level of accuracy and sensitivity
Remote Sensing
UL, CSA, CE approved
Model diversification
T103 series - Heating / Cooling remote sensing thermostat
T125 series - Commercial grade remote sensing thermostat
L107 series - Manual reset high limit thermostat
L117 series - Manual / Auto reset high limit thermostat

15. PECO :
RAINTIGHT, WEATHER RESISTANT THERMOSTAT
T115 T109
Application
T115 NEMA 4X thermostats are intended for applications that require a rugged,
weatherproof control. Typical applications include refrigeration, walk-in coolers, freezers,
ventilation fans, dampers, and heating and cooling in factory buildings, greenhouses,
garages, warehouses or animal confinement buildings for poultry hogs or livestock. The unit
will tolerate spraying with water, high humidity airborne contaminates and moderately
corrosive conditions
Features
Suitable for surface mounted, immersion and air application
Customized marking available
Control knob with temperature indication with 4 to 43 (40 to 110 )
One Control for Heating and / or Cooling
NEMA 4X Enclosure complies with N.E.C Article 547
Rugged, weather Resistant Enclosure
Corrosion Resistant Enclosure
Local and Remote Sensing Models Available
Meets UL and CSA Requirements
Model diversification
T115 Raintight weather resistant thermostats
T109 Double pole double throw thermostats

16. www.rainbowelec.co.kr
SPECIAL REQUEST HEATER :
CARTRIDGE HEATER
Capillary Thermostat & Thermometer
Cartridge heater : the standard termination for Hi-Density Catridge Heater is consisting
of 10”(254mm) externally connected leads to 1 1/24”(32mm) solid nickel connectors. The
leads are stranded nickel wire with high temperature fiberglass/Teflon tape insulation. UL
approved for 300 Volt or 600 Volt service, rated at a continuous operating temperature of 14
482 (250 ). To meet the requirements of your application we offer over 40 standard
termination styles to select from that will solve many of the most common application 15
problems.
Tubular heaters : for heating almost any liquid or vicious materials including acids,
water, synesthetic oils, lube oils as well as air, gases, steam or low melting solids. The
standard element consists of an 80/20 nickel chrome resistance wire which is connected to
terminal pins, and centred in a metal tube. The tube is filled with high quality magnesium
oxide and compressed to ensure a rapid heat transfer. The terminal pins from a non-heated
section of the element well as the terminal arrangement. They are insulated from the tube by
ceramic bushes. Kilowatt rating and voltage can be varied to suit each application.
Flange Immersion Heater can be designed with any element length, wattage, and
voltage. High purity compacted MgO powder provides maximum heat conductivity and
optimum dielectric strength. Bends are recompacked to restore MgO density.
Thermocouples can be installed for high limit temperature control. Spacers installed on
elements to assist flow distribution.

17. INFRARED CERAMIC HEATER
What is Far Infrared Ray? Is Electron wave which is kind of light wave. All objects
radiate different energy of infrared ray by temperature. Then if the other objects absorb the
ray and it makes molecules vibrate actively, so the temperature is increased. Far infrared
Ray percolate an objects deeply and make increase the temperature by molecules°Ø
vibration and resonance. Then, inner side and out side can have uniform temperature. This
character applies to the Food Drying, Cooking, Coating, Health, Beauty, etc. Especially, it is
excellent effect for molding & heat treatment for organic compound such as Plastic, Resin,
Rubber, Urethane, etc.
Application
Painting Industry (wood, coating, furniture)
- Enameling equipment machine
- metal, motor painting and steel plate
Plastic Industry (Thermal processing for Plastic)
- Vacuum shaping (PP,PE,PS,PVC,PBS) softening
- compressing and packing of plastic products
- Heating webs of plastic foils prior to embossing.
Electronic Industry (clean heater)
- soldering printed circuit boards (reflow, soldering)
- drying of hollow substance, such as IC circuit, LCD glass
- PC panel
Foods Industry
- cooking and keeping warm of foods (chocolate, cracker, candy, bread etc.)
Chemical Industry (medical Appliance)
- drying of chemical medicine
- medical sterilization of rays irradiation

18. www.rainbowelec.co.kr
TWO PROTECTIVE FUNCTION IN ONE UNIT :
PROTECTOR : AT-500 SERIES
Capillary Thermostat & Thermometer
Characters
Electric rating : 50A / 250VAC
Temp. range : 50~150 Tolerance 5
Contact type : DPST (fail safe version)
Action mode : Manual reset
Fixed mode : Fixed with screw of UNF10-32
Resistance of terminals : Under 50m
Capillary tube 2 Cu (standard length 600mm)
Features
* Water over heat protection
* Heater dry boiling protection
* Use the hot liquid expand principle to have high sensitivity
* Capillary can be curved around the heater
* 50A transient current to have fail save control, relay is not necessary.
16
Application
- High sensitivity for dry boiling for heater 17
- Keep high power heater from being out of control due to dry boiling and heater blow out.
- To substitute for capillary thermostats used in the high power market to save the cost of relay.
- Over heat protector for electric thermostats.
- Widely applied to machinery equipment as protector of over heat and dry boiling.
- Temp. controller and protector for air conditioner, kitchenware, machinery for foodstuff.
- Fail save version for high power heater to keep from being blow out.
AT500 Protector
Manual reset / Auto reset / Fixed / Adjustable
Temperature range : 40 ~ 130
Differential : 3, 5
Characters : Electric Water Heater Controls / Residential Storage-Tank Water Heaters
It is designed to meet the high electrical capacity requirements of electric water heaters.
The speed an force of contact separation provides long-dependable control life at high electrical loads.