Star Control Box for 1/2 HP Submersible Well Pumps
4.4Editor score
Indoor or outdoor use
Heavy-duty terminal block
Universal voltage relay
In this guide
A reliable control box is essential for managing the electrical needs of your submersible well pump. It ensures safe operation and protects the motor from electrical surges and failures that could lead to costly repairs.
We evaluated ten top-rated control boxes from leading brands like Franklin Electric, Red Lion, and Goulds. Our analysis focused on voltage compatibility, horsepower ratings, enclosure durability, and user feedback for long-term performance.
Each selection highlights specific strengths and ideal use cases for different pump setups. Keep in mind that product prices and availability can change frequently, so verify current details before making your final purchase decision.
Top 3 Picks for Best Control Box for Well Pump
Red Lion RLCB10-230 Control Box
4.6Editor score
NEMA 3 enclosure rating
UL listed in USA
Thermal protection included
Franklin Electric Control Box 2 Hp
4.4Editor score
2 HP rated power
Thermal protector included
High start capacitor
Top 10 Best Control Box for Well Pump in 2026 Compared
The following table provides a side-by-side comparison of all ten control boxes, highlighting key specifications such as horsepower, voltage, and unique features to assist your selection process.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Red Lion RLCB10-230
1 HP 230 Volt
Single Phase 3-wire
NEMA 3 Enclosure
Indoor/Outdoor Rated
4.6Editor score
Editor's Choice
Control Box 1 1/2HP
1.5 HP 230V
Single Phase Control
9-5/16 Inch Height
Accepts #2 AWG Wire
4.7Editor score
Best Premium
FRANKLIN ELECTRIC 1 HP
1 HP 230 V
3 Wire Motors
Single Phase
Made In USA
4.6Editor score
Franklin Electric Control Box 2 Hp
2 HP Rated Power
105-126 uf Start
1.5kw Power Output
3.06 kg Weight
4.4Editor score
FRANKLIN ELECTRIC 1/2 HP
1/2 HP 230 V
3 Wire Motors
Single Phase
Made In USA
4.6Editor score
Star Control Box 1/2 HP
1/2 HP 230 Volt
Indoor Outdoor Use
Heavy-duty Terminals
Universal Voltage Relay
4.4Editor score
Franklin Electric 1 1/2 HP
1.5 HP 230 V
3 Wire plus Ground
Single Phase
Made In USA
4.7Editor score
GOULDS CentriPro 1 HP
1 HP 230V Control
CB10412 Model
Max Amps 9.8
60 HZ Frequency
4.6Editor score
Control Box 3/4HP
3/4 HP 230V
1 Phase Control
Franklin Manufacturer
United States Made
4.7Editor score
Franklin 2823008110
1.5 HP 230V
1 Phase Control
2823008110 Model
Standard Design
4.7Editor score
1. Red Lion RLCB10-230 – Best Overall Control Box for Well Pump
Red Lion RLCB10-230
1 HP 230 Volt
NEMA 3 Enclosure
Thermal Protection
Indoor Outdoor Use
The Red Lion RLCB10-230 is a top-rated control box designed for 1 HP submersible well pumps. It holds a strong 4.6 star rating due to its robust construction and safety certifications.
Pros
- UL listed for safety
- Heavy duty terminals
- Multiple knockouts included
- Built for continuous duty
- Verified quality testing
Cons
- Not for 2-wire pumps
- Verify pump compatibility first
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Its NEMA 3 enclosure rating makes it suitable for both indoor and outdoor installations. The box includes four 7/8-inch knockouts and three 1-1/8-inch knockouts to simplify wiring.
While it is built to last with continuous duty ratings, you must ensure your pump is a 3-wire model. Some Red Lion pumps come with a control box already attached.
Homeowners seeking a reliable and safe solution for their well pump system should consider this option. It offers peace of mind with UL listing and thermal protection features.
Safety and Durability
The UL listing and NEMA 3 rating ensure the box can withstand environmental elements and electrical hazards safely.
Installation Flexibility
Multiple knockouts allow for versatile wiring setups whether mounting on a wall or a pole near the pump.
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2. Control Box 1 1/2HP – High Power Control Box for Well Pump
Control Box 1 1/2HP
1.5 HP 230V
Phase 1 Control
Submersible Motor
9-5/16 Height
This control box is rated for 1.5 HP and 230V, making it suitable for larger submersible water pumps. It maintains an impressive 4.7 star rating from users.
Pros
- High 1.5 HP rating
- Accepts #2 AWG wire
- Pole or wall mount
- Strong customer rating
- Specific CSCR type
Cons
- Limited brand info
- Check dimensions first
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It features a CSCR control box type and accepts wire up to #2 AWG. The unit can be mounted on a pole or wall as needed.
Installation requires checking the exact dimensions as the height is nearly 10 inches. Ensure your electrical setup matches the single phase requirement.
Users looking for a higher horsepower control box should evaluate this unit carefully. It provides a solid foundation for managing more powerful well pump motors.
Wire Compatibility
Accepting up to #2 AWG wire means it can handle the higher current demands of larger motors efficiently.
Mounting Options
The design supports both pole and wall mounting to fit different well house or shed layouts easily.
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3. FRANKLIN ELECTRIC 1 HP – Reliable Control Box for Well Pump
FRANKLIN ELECTRIC 1 HP
1 HP 230 V
3 Wire Motors
Single Phase
Made In USA
Franklin Electric is a trusted name in water pump systems and this control box reflects that reputation. It is designed for 1 HP submersible pumps using 3-wire motors.
Pros
- Franklin Electric brand
- Made in the USA
- Single phase design
- For 3 wire motors
- Standard 230V voltage
Cons
- Basic feature set
- Verify wire count first
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The unit operates on 230 volts single phase and is manufactured in the USA. It has earned a 4.6 star rating from verified purchasers.
While it is straightforward, you must confirm your motor is a 3-wire model. Two-wire pumps do not typically require an external control box.
For those prioritizing brand reliability and domestic manufacturing this is a strong candidate. It delivers standard performance for residential well pump applications.
Brand Trust
Franklin Electric is known for producing durable pump components that stand up to long-term use in various environments.
Motor Compatibility
Designed specifically for 3-wire motors this box ensures proper capacitor and relay function for safe operation.
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4. Franklin Electric Control Box 2 Hp – Premium Control Box for Well Pump
Franklin Electric Control Box 2 Hp
2 HP Rated Power
1.5kw Power Output
High Start Capacitor
Thermal Protector
This premium control box is built for 2 HP submersible water pumps and offers robust specifications. It includes both a thermal protector and start relay for complete motor management.
Pros
- 2 HP high power
- Includes start relay
- Thermal protection
- 230V single phase
- Robust capacitor specs
Cons
- Higher price point
- Requires heavy wiring
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The start capacitor ranges from 105 to 126 uf which supports strong motor starts. It weighs about 6.75 pounds indicating solid construction.
Due to its high power rating it requires proper electrical setup. The cost is higher than standard boxes but matches the increased capacity.
Property owners with larger wells or higher demand systems should consider this model. It provides the necessary power handling for demanding pump applications.
Motor Protection
The thermal protector helps prevent overheating during extended use which extends the motor lifespan significantly.
Capacitor Strength
A high start capacitor ensures the pump motor receives a strong initial boost to overcome high head pressure.
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5. FRANKLIN ELECTRIC 1/2 HP – Small Control Box for Well Pump
FRANKLIN ELECTRIC 1/2 HP
1/2 HP 230 V
3 Wire Motors
Single Phase
Made In USA
Ideal for smaller well pumps this control box handles 1/2 HP loads effectively. It shares the same quality standards as the larger Franklin Electric models.
Pros
- 1/2 HP rating
- Made in USA
- Franklin brand quality
- For 3 wire motors
- Standard voltage setup
Cons
- Small capacity
- Verify wire count first
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It is manufactured in the USA and works with single phase 3-wire motors. Users appreciate the consistent performance and safety standards.
It is essential to check that your pump is a 3-wire unit before ordering. Two-wire models operate differently and do not use this box.
Homeowners with smaller systems or lower water demand will find this unit sufficient. It ensures reliable control without unnecessary overhead.
Size Efficiency
Smaller boxes like this are easier to mount in tight spaces such as small pump houses or near wellheads.
Reliability
Franklin Electric products are known for long service lives reducing the frequency of replacement needs.
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6. Star Control Box 1/2 HP – Budget Control Box for Well Pump
Star Control Box 1/2 HP
1/2 HP 230 Volt
Indoor Outdoor Use
Heavy-duty Terminals
Universal Voltage Relay
This Star Water Systems control box is a cost effective option for 1/2 HP submersible well pumps. It is designed for outdoor use but can be used indoors as well.
Pros
- Affordable pricing
- Universal voltage relay
- Indoor or outdoor
- Side and bottom knockouts
- Industry interchangeable
Cons
- Lower brand recognition
- Check compatibility closely
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It features a heavy duty terminal block for secure connections and side bottom knockouts for easy wire installation. The universal voltage relay adds flexibility.
While it is budget friendly ensure it matches your specific pump model. It is designed to be interchangeable with other industry control boxes.
For those looking to save money without sacrificing essential features this unit is worth considering. It covers the basics for small well pump systems effectively.
Wire Installation
Side and bottom knockouts provide multiple entry points for cables making it easier to route wires neatly.
Versatility
The ability to use indoors or outdoors gives homeowners flexibility based on available space near the well.
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7. Franklin Electric 1 1/2 HP – Mid-Range Control Box for Well Pump
Franklin Electric 1 1/2 HP
1.5 HP 230 V
3 Wire plus Ground
Single Phase
Made In USA
With a 1.5 HP rating this control box handles mid-sized submersible pumps. It boasts a high 4.7 star rating from users who appreciate its reliability.
Pros
- 1.5 HP capacity
- Made in USA
- Franklin brand
- High rating
- Ground support
Cons
- Check wire requirements
- Verify voltage match
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The unit is made in the USA and works with 3-wire plus ground motors. It operates on standard 230 volt single phase power.
Ensure your pump wiring includes a ground connection before installation. This adds an extra layer of safety for the system.
People needing a step up from 1 HP units will find this model suitable. It balances performance and brand quality well.
Safety Features
Support for a ground wire helps prevent electrical hazards and ensures compliance with many local codes.
Performance
The 1.5 HP rating covers a wide range of residential deep well applications providing strong water flow.
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8. GOULDS CentriPro 1 HP – Brand Specific Control Box for Well Pump
GOULDS CentriPro 1 HP
1 HP 230V Control
CB10412 Model
Max Amps 9.8
60 HZ Frequency
This control box is designed specifically for Goulds submersible water well pumps. It is model CB10412 rated for 1 HP and 230 volts.
Pros
- Goulds brand match
- Specific model number
- 9.8 Amp max
- 60 HZ frequency
- 3-wire support
Cons
- Specific to brand
- Check amp rating
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It supports single phase motors with a maximum of 9.8 amps. The frequency is standard 60 HZ which matches most US electrical systems.
Ensure your pump is a Goulds unit that requires this specific control box type. Using mismatched parts can lead to pump failure.
Goulds owners seeking a direct replacement should verify this model matches their current setup. It ensures compatibility and reliable operation.
Brand Matching
Using a control box from the same manufacturer ensures electrical characteristics match the pump motor precisely.
Electrical Ratings
The 9.8 amp rating provides a safety margin for typical 1 HP pump loads without overloading the unit.
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9. Control Box 3/4HP – Intermediate Control Box for Well Pump
Control Box 3/4HP
3/4 HP 230V
1 Phase Control
Franklin Manufacturer
United States Made
This intermediate control box handles 3/4 HP submersible pumps effectively. It is manufactured by Franklin in the United States.
Pros
- 3/4 HP rating
- Franklin manufactured
- Made in USA
- High rating
- Standard 230V
Cons
- Basic specs provided
- Check wiring details
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Users have given it a strong 4.7 star rating reflecting satisfaction with its performance. It operates on 230V single phase power.
It is essential to confirm the wire type and count before installation. Most Franklin boxes require 3-wire motors to function correctly.
Those with mid-sized pumps will find this unit offers a good balance of cost and capacity. It is a practical choice for many residential wells.
Manufacturing Quality
Franklin manufacturing ensures consistent quality control which is vital for electrical components handling high voltages.
Capacity Range
The 3/4 HP rating fits systems that need more power than 1/2 HP but less than a full 1 HP unit.
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10. Franklin 2823008110 – Standard Control Box for Well Pump
Franklin 2823008110
1.5 HP 230V
1 Phase Control
2823008110 Model
Standard Design
The 2823008110 model is a standard control box for 1.5 HP submersible pumps. It is another option from Franklin Electric.
Pros
- 1.5 HP capacity
- 2823008110 model
- 230V operation
- High customer rating
- Franklin brand
Cons
- Check model specifics
- Verify motor type
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It operates on 230V single phase and holds a 4.7 star rating. This suggests consistent performance across different batches.
Make sure your motor specifications align with this control box design. Mismatches can lead to poor pump performance or damage.
Users looking for a reliable 1.5 HP solution will find this box worth reviewing. It offers a standard solution for medium power needs.
Model Specifics
Using the specific model number helps ensure you get the correct replacement for your existing system setup.
Reliability
A high rating from many users indicates that this box generally works well without frequent electrical issues.
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Buying Guide – How to Choose the Best Control Box for Well Pump
Selecting the right control box requires understanding your pump's electrical needs and environmental conditions.
Horsepower Rating
The control box must match your pump's horsepower rating to ensure efficient operation. A box rated for 1 HP will not handle a 2 HP motor properly.
Always choose a control box that matches the pump's horsepower exactly to avoid motor burnout or underperformance.
Voltage Compatibility
Most well pumps operate on 230 volts single phase but some smaller models use different voltages. Check your pump's label for exact voltage requirements.
Mismatched voltage can cause immediate damage to the motor or the control box so verify before purchase.
Wire Configuration
Control boxes are typically required for 3-wire submersible motors. 2-wire pumps often have the control box built into the motor.
Verify your pump has three wires plus ground before ordering a control box to ensure compatibility.
Enclosure Type
NEMA ratings indicate the box's resistance to dust and water. Outdoor boxes should have at least a NEMA 3 or 3R rating.
Select an enclosure rated for your installation environment to prevent corrosion or electrical hazards.
Mounting Options
Some boxes are designed for wall mounting while others are for pole mounting. Check the included hardware and knockout positions.
Choose a mounting style that fits your available space near the well pump for easy access and safety.
Brand Reputation
Reputable brands like Franklin Electric and Red Lion are known for quality components. These brands often provide better warranties and support.
Investing in a trusted brand reduces the risk of premature failure and ensures availability of replacement parts.
Thermal Protection
Thermal protectors prevent the motor from overheating during high loads. This extends the life of the pump significantly.
Ensure the control box includes thermal protection features to safeguard your investment against electrical surges.
Local Electrical Codes
Electrical codes vary by region and may dictate specific requirements for well pump installations. Some areas require specific grounding or enclosure standards.
Consult a licensed electrician to ensure the chosen control box meets all local regulations before installation.
How to Use and Care for Your Control Box for Well Pump
Firstly, always turn off the main power supply before opening or wiring the control box. Ensure the circuit breaker is locked out to prevent accidental shocks.
Secondly, inspect the interior for any loose connections or signs of burning regularly. Tighten terminals as needed to maintain secure electrical contact over time.
Finally, keep the area around the control box free of debris or vegetation. Ensure it is accessible for maintenance but protected from heavy flooding or direct impact.
Frequently Asked Questions
Do all submersible well pumps need a control box?
Not all submersible well pumps require a separate control box. Two-wire models typically have the control components built into the motor unit. However, three-wire motors depend on an external control box to manage their capacitors and relays.
Can I use a control box for a 2-wire pump?
No, you should not use a standard control box for a 2-wire pump. These pumps are designed to operate without an external control box. Attempting to install one could cause wiring conflicts and motor damage.
What happens if the control box fails?
If the control box fails, your pump may stop working or run continuously. This can lead to water supply loss or motor burnout. Check for thermal trips or broken capacitors before assuming a total failure.
How do I know which horsepower to choose?
You must match the control box horsepower to your pump motor's rating exactly. Using a lower HP box will not handle the load while a higher one may not provide the correct electrical signal timing.
Is it safe to install a control box myself?
Installing a control box involves high voltage electricity which can be dangerous. It is recommended to hire a licensed electrician to ensure safety and code compliance. DIY installations risk serious injury or property damage.
Why do control boxes have knockouts?
Knockouts allow you to drill holes for wires to enter and exit the box safely. They ensure the enclosure remains sealed against dust and water when not in use. This helps maintain the NEMA rating of the unit.
What is a thermal protector in a control box?
A thermal protector is a safety device that shuts off power if the motor overheats. This prevents electrical fires and extends the lifespan of the pump motor. It is a critical component for reliable operation.
How often should I check my control box?
It is good practice to inspect your control box once a year for signs of wear. Look for rust or loose wires or unusual smells inside the enclosure. Regular checks help catch small issues before they cause big failures.
Final Thoughts on Choosing the Best Control Box for Well Pump
We have reviewed ten top-rated control boxes that cover a range of horsepower needs and brand preferences. The Red Lion RLCB10-230 and Franklin Electric models stand out for their reliability.
When selecting a control box prioritize matching your pump's voltage and wire configuration accurately. Safety features like thermal protection and proper enclosure ratings are equally important.
Always verify current product details and prices before purchasing to ensure you get the correct component. Your well pump system depends on these electrical connections for long-term performance.