We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

COLUMBUS ELECTRIC Portable Cooling Thermostat: Portable Cooling Equipment (MPN KTO-121B) - Nonprogrammable Thermostats for Portable Cooling Equipment
COLUMBUS ELECTRICNonprogrammable Thermostats for Portable Cooling Equipment

COLUMBUS ELECTRIC Portable Cooling Thermostat: Portable Cooling Equipment (MPN KTO-121B)

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

Brand
COLUMBUS ELECTRIC
Item
Portable Cooling Thermostat: Portable Cooling Equipment
Category
Nonprogrammable Thermostats for Portable Cooling Equipment
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
View Full Spec Sheet

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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
Industrial burner control — Columbus Electric hazardous-location thermostats (HLT-1) for temperature regulation in explosive environments
HVAC system pressure monitoring — Columbus Electric adjustable air pressure switches (GRH3AD) for duct static pressure sensing
Gas wall heater temperature regulation — Columbus Electric gas heater thermostat (P322016) for 50° to 90°F control in residential heating
Attic ventilation management — Columbus Electric attic fan thermostat (1A22-7) for cool-only operation from 80° to 130°F
Portable cooling equipment — Columbus Electric nonprogrammable thermostat (KTO-121B) for SPST close-on-rise switching in temporary cooling units
Commercial building line-voltage control — Columbus Electric analog thermostat (9502DS2T-P) for 24 to 277V AC heating or cooling in plastic/steel enclosures

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

Similar products

Matched by specification & description
COLUMBUS ELECTRIC Line Volt Mechanical Tstat: Heat or Cool, 50° to 90°F, Exposed Dial, 1H/1C (MPN ETD9STGS). Key specifications — Application: Heat or Cool; Switch Type/Action: SPDT, Open/Close on Rise; Temperature Control Range: 50° to 90°F; Stages: 1H/1C; Brand: COLUMBUS ELECTRIC; Control Type: Exposed Dial; Fan Settings: No Fan Setting.
COLUMBUS ELECTRIC
COLUMBUS ELECTRIC Line Volt Mechanical Tstat: Heat or Cool, 50° to 90°F, Exposed Dial, 1H/1C (MPN ETD9STGS). Key specifications — Application: Heat or Cool; Switch Type/Action: SPDT, Open/Close on Rise; Temperature Control Range: 50° to 90°F; Stages: 1H/1C; Brand: COLUMBUS ELECTRIC; Control Type: Exposed Dial; Fan Settings: No Fan Setting.
Line Voltage Analog Thermostat: 24 to 277V AC, Plastic/Steel, 4 1/2 in x 2 3/4 in x 2 3/8 in (MPN 9502DS2T-P). Key specifications — Housing Material: Plastic; Steel; Brand: COLUMBUS ELECTRIC; Temperature Control Range: 50° to 90°F; Product Type: Thermostat; Compatible with Grainger Part Number: 36WK02; Housing Color: White; Nameplate Voltage: 24 to 277V AC.
COLUMBUS ELECTRIC
Line Voltage Analog Thermostat: 24 to 277V AC, Plastic/Steel, 4 1/2 in x 2 3/4 in x 2 3/8 in (MPN 9502DS2T-P). Key specifications — Housing Material: Plastic; Steel; Brand: COLUMBUS ELECTRIC; Temperature Control Range: 50° to 90°F; Product Type: Thermostat; Compatible with Grainger Part Number: 36WK02; Housing Color: White; Nameplate Voltage: 24 to 277V AC.
COLUMBUS ELECTRIC Hazardous Location Line Volt Mechanical Tstat: 40° to 110°F, Aluminum, Adj (MPN HLT-2-G). Key specifications — Switch Type/Action: DPDT, Open/Close on Rise; Temperature Control Range: 40° to 110°F; Temperature Differential: 2° to 4°F; Voltage: 24 to 277V AC; Capillary Length/Bulb Diameter: 5-1/4 in Capillary, 4-3/4 in x 5/16 in Bulb; Brand: COLUMBUS ELECTRIC; Differential Type: Adjustable; Defrost Termination: 40° to 110°F.
COLUMBUS ELECTRIC
COLUMBUS ELECTRIC Hazardous Location Line Volt Mechanical Tstat: 40° to 110°F, Aluminum, Adj (MPN HLT-2-G). Key specifications — Switch Type/Action: DPDT, Open/Close on Rise; Temperature Control Range: 40° to 110°F; Temperature Differential: 2° to 4°F; Voltage: 24 to 277V AC; Capillary Length/Bulb Diameter: 5-1/4 in Capillary, 4-3/4 in x 5/16 in Bulb; Brand: COLUMBUS ELECTRIC; Differential Type: Adjustable; Defrost Termination: 40° to 110°F.
COLUMBUS ELECTRIC Attic Fan Thermostat: Cool Only, On, 80° to 130°F, Exposed Dial, 120 to 240V AC (MPN 1A22-7). Key specifications — Application: Cool Only; System Settings: On; Switch Type/Action: SPST, Close on Rise; Temperature Control Range: 80° to 130°F; Stages: 1C; Voltage: 120 to 240V AC; Brand: COLUMBUS ELECTRIC; Control Type: Exposed Dial.
COLUMBUS ELECTRIC
COLUMBUS ELECTRIC Attic Fan Thermostat: Cool Only, On, 80° to 130°F, Exposed Dial, 120 to 240V AC (MPN 1A22-7). Key specifications — Application: Cool Only; System Settings: On; Switch Type/Action: SPST, Close on Rise; Temperature Control Range: 80° to 130°F; Stages: 1C; Voltage: 120 to 240V AC; Brand: COLUMBUS ELECTRIC; Control Type: Exposed Dial.
COLUMBUS ELECTRIC Hazardous Location Line Volt Mechanical Tstat: 40° to 110°F, Aluminum, Adj (MPN HLT-1). Key specifications — Switch Type/Action: SPDT/ Open and Close on Rise; Temperature Control Range: 40° to 110°F; Temperature Differential: 2° to 4°F; Voltage: 120/277V AC; Capillary Length/Bulb Diameter: 5 in Capillary, 4-5/8 in x 5/16 in Bulb; Brand: COLUMBUS ELECTRIC; Differential Type: Adjustable; Enclosure Material: Aluminum.
COLUMBUS ELECTRIC
COLUMBUS ELECTRIC Hazardous Location Line Volt Mechanical Tstat: 40° to 110°F, Aluminum, Adj (MPN HLT-1). Key specifications — Switch Type/Action: SPDT/ Open and Close on Rise; Temperature Control Range: 40° to 110°F; Temperature Differential: 2° to 4°F; Voltage: 120/277V AC; Capillary Length/Bulb Diameter: 5 in Capillary, 4-5/8 in x 5/16 in Bulb; Brand: COLUMBUS ELECTRIC; Differential Type: Adjustable; Enclosure Material: Aluminum.
COLUMBUS ELECTRIC Gas Wall and Ceiling Heater Thermostat: 50° to 90°F, 750MV / 24V Volt (MPN P322016). Key specifications — Compatible Grainger Part Number: 36FK08; Thermostat Control Range: 50° to 90°F; Voltage: 750MV / 24V; Brand: COLUMBUS ELECTRIC.
COLUMBUS ELECTRIC
COLUMBUS ELECTRIC Gas Wall and Ceiling Heater Thermostat: 50° to 90°F, 750MV / 24V Volt (MPN P322016). Key specifications — Compatible Grainger Part Number: 36FK08; Thermostat Control Range: 50° to 90°F; Voltage: 750MV / 24V; Brand: COLUMBUS ELECTRIC.

More from COLUMBUS ELECTRIC

View all COLUMBUS ELECTRIC parts