Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Robertshaw 5300-621 Electric Thermostat - Replacement HVACR Controls, Switches & Thermostats
RobertshawReplacement HVACR Controls, Switches & Thermostats

Robertshaw 5300-621 Electric Thermostat

Robertshaw Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Electric Thermostat.

SKU 3G-OTH-114063

Also listed as: 5300621 · 5300 621

Brand
Robertshaw
Item
5300-621 Electric Thermostat
Category
Replacement HVACR Controls, Switches & Thermostats
Available to Order
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.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Robertshaw
Manufacturer Part Number
5300-621
Product Type
Electric Thermostat

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

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

Product Description

Robertshaw Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Electric Thermostat.

Frequently Asked Questions

What is the Robertshaw 5300-621 electric thermostat used for?

The Robertshaw 5300-621 electric thermostat is a replacement HVACR control used to regulate temperature in commercial and industrial heating, ventilation, air conditioning, and refrigeration systems. It is commonly applied in rooftop units, packaged HVAC equipment, and refrigeration circuits where precise electric temperature control is required.

What are the specifications of the Robertshaw 5300-621 thermostat?

The Robertshaw 5300-621 is an electric thermostat with manufacturer part number 5300-621. It is designed as a direct replacement for compatible HVACR systems. For exact electrical ratings, temperature range, and mounting details, consult the original equipment documentation or contact 3G Electric for technical support.

Where to buy the Robertshaw 5300-621 thermostat worldwide?

You can source the Robertshaw 5300-621 electric thermostat through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact our team for pricing and lead time on this replacement HVACR control.

How to install the Robertshaw 5300-621 electric thermostat?

Installation of the Robertshaw 5300-621 electric thermostat should follow standard HVACR best practices: disconnect power, verify compatibility with your system's voltage and wiring, mount securely, and test operation. Always refer to the manufacturer's installation manual for specific wiring diagrams and safety precautions.

Used in

Common applications for Robertshaw
Commercial HVAC — Robertshaw RS10420T digital WiFi thermostat for programmable heat and cool control in office buildings
Furnace ignition — Robertshaw 41-230 universal hot surface ignitor for silicon carbide replacement in residential and light commercial furnaces
Airflow monitoring — Robertshaw 2374-509 adjustable air pressure switch for draft sensing in industrial burner systems
Gas-fired equipment — Robertshaw 1820-009 universal pilot assembly with thermopile for natural gas or LP water heaters and boilers
Vibration protection — Robertshaw 366A0 mechanical vibration switch for pump and compressor monitoring in industrial plants
OEM replacement — Robertshaw 41-428N direct spark igniter for Trane HVAC equipment requiring silicon nitride ignitors

Robertshaw Products

3G Electric supplies Robertshaw replacement hvacr controls, switches & thermostats. 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

Cross-referenced by specification & description
Electric thermostat for temperature regulation in commercial and industrial HVACR systems. Suitable for ovens, furnaces, and process equipment requiring precise electric control. Direct replacement for compatible controls
Robertshaw
Electric thermostat for temperature regulation in commercial and industrial HVACR systems. Suitable for ovens, furnaces, and process equipment requiring precise electric control. Direct replacement for compatible controls
Electric thermostat for on/off temperature control in HVAC and refrigeration systems. Suitable for use in walk-in coolers, freezers, and HVAC units. Replacement part for commercial and industrial applications
Robertshaw
Electric thermostat for on/off temperature control in HVAC and refrigeration systems. Suitable for use in walk-in coolers, freezers, and HVAC units. Replacement part for commercial and industrial applications
Electric thermostat for temperature regulation in HVACR systems. Suitable for use in ovens, furnaces, and process equipment requiring precise electric temperature switching. Direct replacement for compatible controls
Robertshaw
Electric thermostat for temperature regulation in HVACR systems. Suitable for use in ovens, furnaces, and process equipment requiring precise electric temperature switching. Direct replacement for compatible controls
Electric thermostat for temperature regulation in commercial and industrial HVAC and refrigeration systems. Designed as a direct replacement for failed original Robertshaw controls. Suitable for heating, ventilation, air conditioning, and refrigeration applications
Robertshaw
Electric thermostat for temperature regulation in commercial and industrial HVAC and refrigeration systems. Designed as a direct replacement for failed original Robertshaw controls. Suitable for heating, ventilation, air conditioning, and refrigeration applications
Electric thermostat for temperature regulation in commercial and industrial HVACR systems. Suitable for ovens, furnaces, and process equipment requiring precise electric switching
Robertshaw
Electric thermostat for temperature regulation in commercial and industrial HVACR systems. Suitable for ovens, furnaces, and process equipment requiring precise electric switching
Robertshaw
Robertshaw
Replacement HVACR control thermostat for commercial and industrial heating, ventilation, air conditioning, and refrigeration systems. Direct-acting design for temperature regulation in climate control applications

More from Robertshaw

View all Robertshaw parts
Round ignitor pilot assembly for gas-fired heating systems. Provides a stable flame for ignition in furnaces and boilers. Direct replacement part for compatible HVAC equipment
Robertshaw
Round ignitor pilot assembly for gas-fired heating systems. Provides a stable flame for ignition in furnaces and boilers. Direct replacement part for compatible HVAC equipment
The Robertshaw O60-200 is a temperature control designed for HVACR systems, regulating heating or cooling cycles. It is suitable for use in commercial refrigeration, ovens, and industrial process equipment requiring precise temperature switching
Robertshaw
The Robertshaw O60-200 is a temperature control designed for HVACR systems, regulating heating or cooling cycles. It is suitable for use in commercial refrigeration, ovens, and industrial process equipment requiring precise temperature switching
Electric thermostat for HVACR systems, providing on/off switching for temperature control in heating, cooling, and refrigeration applications. Suitable for use with electric heating elements, fan coils, unit heaters, rooftop units, and walk-in coolers
Robertshaw
Electric thermostat for HVACR systems, providing on/off switching for temperature control in heating, cooling, and refrigeration applications. Suitable for use with electric heating elements, fan coils, unit heaters, rooftop units, and walk-in coolers
Ignition control for HVAC systems, managing ignition sequence for gas burners. Monitors flame presence and controls gas valve for safe burner startup. Used as a replacement part in residential and commercial heating equipment
Robertshaw
Ignition control for HVAC systems, managing ignition sequence for gas burners. Monitors flame presence and controls gas valve for safe burner startup. Used as a replacement part in residential and commercial heating equipment
Pilot burner for gas-fired heating equipment. Provides a constant flame to ignite the main burner. Used as a replacement part in furnaces, boilers, and HVAC systems
Robertshaw
Pilot burner for gas-fired heating equipment. Provides a constant flame to ignite the main burner. Used as a replacement part in furnaces, boilers, and HVAC systems
Flame sensor for gas-fired heating systems. Detects pilot flame presence and generates electrical current to signal gas valve. Replacement part for HVACR controls
Robertshaw
Flame sensor for gas-fired heating systems. Detects pilot flame presence and generates electrical current to signal gas valve. Replacement part for HVACR controls
Hot surface igniter for gas-fired heating equipment. Used to ignite the burner in furnaces, boilers, and HVAC systems by heating a silicon carbide or nitride element to glow. Direct replacement for failed igniters in residential and light commercial applications
Robertshaw
Hot surface igniter for gas-fired heating equipment. Used to ignite the burner in furnaces, boilers, and HVAC systems by heating a silicon carbide or nitride element to glow. Direct replacement for failed igniters in residential and light commercial applications
Pilot burner for gas-fired heating equipment. Provides a constant flame to ignite the main burner in furnaces, boilers, and water heaters. Direct replacement for compatible systems
Robertshaw
Pilot burner for gas-fired heating equipment. Provides a constant flame to ignite the main burner in furnaces, boilers, and water heaters. Direct replacement for compatible systems