EXW Singapore — collect or forward from our Singapore office.

3G Electric
COLUMBUS ELECTRIC KTO-121B Nonprogrammable Thermostat for - Nonprogrammable Thermostats for Portable Cooling Equipment
COLUMBUS ELECTRICNonprogrammable Thermostats for Portable Cooling Equipment

COLUMBUS ELECTRIC KTO-121B Nonprogrammable Thermostat for

The COLUMBUS ELECTRIC Portable Cooling Thermostat (MPN KTO-121B) is a nonprogrammable analog thermostat for portable cooling equipment. It features a bi-metal sensor, SPST switch action (close on rise), and a steel…

SKU 3G-OTH-72061

Also listed as: KTO121B · KTO 121B

Brand
COLUMBUS ELECTRIC
Item
KTO-121B Nonprogrammable Thermostat for
Part Number
KTO-121B
Category
Nonprogrammable Thermostats for Portable Cooling Equipment
Available to Order
Also known as:KTO-121BCOLUMBUS ELECTRIC
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

COLUMBUS ELECTRIC
Manufacturer Part Number
KTO-121B
Sensor Type
Bi-Metal
Display Type
Analog
Switch Type/Action
SPST, Close on Rise
Programming Capability
Not Programmable
Temperature Differential
6° to 8°F
Enclosure Rating/Material
Not Rated, Steel
Temperature Control Range
-10° to 100°F

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

COLUMBUS ELECTRIC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The COLUMBUS ELECTRIC Portable Cooling Thermostat (MPN KTO-121B) is a nonprogrammable analog thermostat for portable cooling equipment. It features a bi-metal sensor, SPST switch action (close on rise), and a steel enclosure. The temperature control range is -10° to 100°F with a differential of 6° to 8°F.

Frequently Asked Questions

What is the COLUMBUS ELECTRIC Portable Cooling Thermostat used for?

This thermostat controls portable cooling equipment by sensing temperature with a bi-metal sensor and switching the cooling circuit on or off. It is commonly used in industrial or commercial environments where simple, reliable temperature regulation is needed without programmable features.

What are the specifications of the COLUMBUS ELECTRIC KTO-121B thermostat?

The KTO-121B is a nonprogrammable analog thermostat with SPST switch action (close on rise). It has a temperature control range of -10° to 100°F and a differential of 6° to 8°F. The sensor is bi-metal, the enclosure is steel (not rated), and it is manufactured by COLUMBUS ELECTRIC.

Where to buy the COLUMBUS ELECTRIC KTO-121B thermostat worldwide?

3G Electric supplies the COLUMBUS ELECTRIC KTO-121B thermostat to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the COLUMBUS ELECTRIC portable cooling thermostat?

Mount the steel enclosure securely near the cooling equipment. Connect the SPST switch wires according to the close-on-rise action: the circuit closes when temperature rises above the setpoint. Adjust the analog dial to the desired temperature within the -10° to 100°F range. Always follow local electrical codes.

Used in

Common applications for COLUMBUS ELECTRIC
Commercial HVAC — Columbus Electric Line Voltage Analog Thermostat (9502DS2T-P) for zone temperature control in office buildings.
Industrial heating — Columbus Electric Hazardous Location Line Volt Mechanical Tstat (HLT-1) for temperature regulation in paint booths or chemical storage areas.
Residential ventilation — Columbus Electric Attic Fan Thermostat (2E340) to activate attic exhaust fans in warm climates.
Gas heating systems — Columbus Electric Gas Wall and Ceiling Heater Thermostat (P322016) for space heating in warehouses or workshops.
Portable cooling equipment — Columbus Electric Portable Cooling Thermostat (KTO-121B) for temperature control in temporary cooling units.
HVAC air handling — Columbus Electric Adjustable Set-Point Air Pressure Switch (GRH3AD) for filter monitoring or fan proving in duct systems.
Not sure this is the right part? Photo-identify it→

COLUMBUS ELECTRIC Products

3G Electric supplies COLUMBUS ELECTRIC nonprogrammable thermostats for portable cooling equipment. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

More from COLUMBUS ELECTRIC

View all COLUMBUS ELECTRIC parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first