SoftStart Well Pump™ – 120V and 240V Water Well Pump Soft Start

Reviewed By 3800+ Satisfied Customers

SoftStart Well Pump™ – 120V and 240V Water Well Pump Soft Start

SoftStart Well Pump™ soft starter instantly reduces the current needed to start pumps, and keeps water flowing during normal operation AND under low power and emergency situations. By reducing pump startup power by up to 50%, it stops breakers from tripping during normal use. It also works with small inverter generators and solar battery/inverter systems to provide uninterrupted water supply in off-grid setups and during emergencies.

check Reduces startup current by up to 50%.
check Starts a well pump on as little as a 3000-watt generator.
check Prolongs your well pump's life.

Shipping calculated at checkout.

$399.00

FREE Shipping shown at check-out. Ships from Florida within 1-3 days.

NOTE: Clamp meters may not provide accurate inrush reduction results

NOTE: The SoftStart Well Pump unit may not operate properly with contractor/non-inverter generators due to their high harmonic distortion (THD).

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DESCRIPTION

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SoftStart Well Pump™ soft starter ensures steady flowing water from your water well. It will:

Help your pump start smoothly, without a hard jolt.
Control pump startup power and prevent tripping breakers, excess water pressure and motor wear.
Reduce stress on your pump, prolonging its life.
Prevent overload or shutdown of generators.
Install easily – but consulting an electrician is a good idea.
Connect with basic line-in and line-out wiring.
Take about 20 minutes to install, once the wiring is ready.

This well pump soft start was designed for Submersible, Jet, Booster and other Water Pumps rated at:

120VAC, 1/2 to 1.5 HP, 1 phase
240VAC, 1/2 to 3 HP, 1 phase.

SoftStart Well Pump soft starters are tested and verified to reduce well pump startup inrush current by up to 50%. Results can vary due to pump performance and other system conditions.

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NOTE: Clamp meters may not provide accurate inrush reduction results. Due to their methods of measuring current inrush data, Standard Clamp Meters and True RMS Clamp Meters are too slow to capture the high speed current reduction from the SSWP that's happening 120 times per second.

NOTE: The SoftStart Well Pump unit may not operate properly with contractor/non-inverter generators due to their high harmonic distortion (THD).
_________________________________________________

KEY FEATURES

Reduces startup current by up to 50%
Starts a well pump on as little as a 3kW generator
Quiets well pump startup and operation

SPECIFICATIONS

Technical Specifications – SoftStart Well Pump™ Soft Starter

Model number: SSWP
Applications: 120V 0.5- 1.5 HP, 1 ph. water well pump; 240V 0.5- 3 HP, 1 ph. water well pump
Nominal working voltage: 115VAC (90~135VAC), 1 ph.; 230VAC (187~266VAC), 1 ph.
Max. cont. working voltage: 135VAC / 266VAC
Max. cont. working current: 18A
Max. non-repetitive inrush current: 130A (<20ms)
Max. surge current: 90A (<350ms)
Soft start-up time: 1±0.5s
Current consumption: 48mA (capacitive 115VAC, 230VAC)
Power consumption: Less than 3 Watts at idle
Operation hours: >45,000 hours (rated working temperature)
Effective on/off service: >100,000 cycles
Working temperature: -40ºF to 185ºF (-40ºC to 85ºC)
Working humidity: 0~95% RH – <104ºF (<40ºC)
Dimensions: 7.8 x 3.6 x 2.6 in./197 × 92 × 67 mm
Weight: 1.1 lb. (0.5 kg)
Warranty: One-year limited warranty (standard). See details inside product package.

SoftStart Well Pump™ Spec Sheet

FAQ

Power and Connection Issues

Q1. Can I use a clamp meter with this product?

No. Clamp meters may not provide accurate inrush reduction results. Due to their methods of measuring current inrush data, Standard Clamp Meters and True RMS Clamp Meters are too slow to capture the high speed current reduction from the SSWP that's happening 120 times per second.

Q2: The unit does not turn on. What should I do?
Answer: Verify that the power supply is properly connected. Check that the circuit breaker or fuse is not tripped. Ensure correct wiring according to the installation guide. Confirm voltage compatibility (120V or 240V).

Q3: The LED indicators are not lighting up. What could be the issue?
Answer: Ensure proper wiring and secure connections. Check for a blown fuse or tripped breaker. Confirm power is reaching the connection terminals.

Startup and Performance Issues

Q4 My well pump still experiences high inrush current when tested with a clamp meter.
Answer: Double-check wiring connections. Verify the SoftStart Well Pump™ is securely grounded. Ensure the correct model is used for your system (SSWP is used for ½ to 1 ½ HP pumps at 120V, or ½ to 3 HP pumps at 240V). You could be getting the benefit of reduced inrush without the clamp meter being able to detect it. Most clamp meters cannot detect the inrush current drop that happens in milliseconds. There are special inrush clamp meters for this type of testing. If the green light is on and the pump is working, your unit is working fine.

Q5: My generator shuts down when starting my well pump.
Answer: Ensure the generator output meets the minimum wattage requirement (typically 3,000 watts). Check that the generator is properly grounded.

Q6: My system runs fine on electric grid power but struggles with a generator.
Answer: Confirm that the generator provides stable voltage without excessive fluctuation. Reduce the load by turning off other appliances. Try re-setting the generator and restarting the system.

If the generator is a contractor/non-inverter generator with unstable power due to high harmonic distortion (THD), the SoftStart Well Pump may not operate properly.

Installation and Wiring Issues

Q7: The system does not recognize the SoftStart Well Pump™. What should I do?
Answer: Verify that all connections match the wiring diagram exactly. Re-check wiring and refer to installation guides. Ensure the ground connections are properly installed.

Q8: My well pump worked before installation, but now it will not start.
Answer: Check for any loose or disconnected wires. Temporarily remove the SoftStart Well Pump and reconnect the system to its original wiring to test.

Reviewed by +100 Happy Customers

SoftStart Well Pump™ Ensures You Have Fresh Water Flowing During Normal and Low Power Situations

Based on 107 Reviews By Happy Customers

What SoftStart Well Pump™ Owners Are Saying...

Ian M Burke - SoftStart Well Pump™ owner

Watch Video

UnpluggedTexan - SoftStart Well Pump™ owner

Watch Video

Off Grid Solar Living - SoftStart Well Pump™ owner

Watch Video

I used to hate hearing a heavy thump, and seeing my power inverter flash an overload warning every time my water pump turned on.
The SoftStart Well Pump™ from SoftStartUSA fixed this problem for my off-grid home right away.
I really loved how simple it was to install, and how it smoothly lowered the big power surge to m...

Ian M Burke - SoftStart Well Pump™ owner

Watch Video

UnpluggedTexan - SoftStart Well Pump™ owner

Watch Video

Off Grid Solar Living - SoftStart Well Pump™ owner

Watch Video

But Don't Take Our Word For It...

A group of customers kindly shared how they installed and use the SoftStart Well Pump™. Watch the videos below.

Hurricanes Outages and Livestock Water-SoftStart Well Pump at Robinson Ranch

SoftStart Well Pump Customer Success Story Paul Provence.

SoftStart Well Pump Success Story Doug Strickland

SoftStart Well Pump Customer Review Video - Kieran DeWolf

SoftStart Well Pump™ improves efficiency and longevity for well pumps on solar power inverter systems

SoftStart Well Pump™ Fix for Off-Grid & Generator Systems

DIY Well Pump Soft Start Installation

Lower the Surge Amps on your Well Pump with this!

It Works So Fast, Portable Meters Can't Measure It Working!

The SoftStart Well Pump™ is a professional grade soft start. It's designed to work with a variety of pumps. However, regular clamp meters can't register the inrush current reduction. Take a look at how Mike Sokol – the guy who wrote the book on RV electricity – measures the soft start's impact on well pump startup.

3 Easy Steps to Steady Well Water Daily - Guaranteed.

SoftStart Well Pump™ is the well pump soft start kit for normal power conditions, off-grid and blackout emergencies. Just follow these simple steps, and enjoy a more reliable flow of water from your well pump – guaranteed.

Place your order

Secure your SoftStart Well Pump™ in minutes with our easy and secure checkout.

Get Fast Shipping

We'll pack and ship your order within 24 hours, with tracking sent straight to your inbox.

Enjoy Steady Well Water This Year

Experience water security in your home, using grid power or a small generator during low or no power situations.

The Most Trusted Soft Start For Well Pump Brands Available Today.

SoftStart Well Pump™ keeps your water pumps running efficiently – even on small generator power. Whether you’re using 120V or 240V power, it reduces the current needed to start pumps, and helps keep water flowing during normal operation AND during power emergencies. By minimizing the inrush power spike and mechanical stress at startup, it extends pump life by reducing wear and tear on motor windings.

Reduces startup current by up to 50%
Starts a well pump on as little as a 3kW generator
Quiets well pump start-up and operation.

ADD TO CART

Basic Installation Of The SoftStart Well Pump™

The SoftStart Well Pump™ soft starter is installed between the power source and the water system’s pressure switch. See detailed instructions below. Installation should take less than one hour. If you do not see your wiring diagram on our online support pages, send us a picture of your pump diagram using our ticket support system, and we will customize it for you absolutely free.

There are no user serviceable parts inside the SoftStart Well Pump™ unit. The unit is sealed in resin to ensure a long life and to protect components from vibration, heat and cold.

WARRANTY:

The SoftStart Well Pump product is warranted to be free from defects in workmanship and materials for one (1) year after the date of purchase. This warranty is limited to the replacement of the product.

Well Pump Soft Start Installation With Circuit Breaker Panel

FOR 120/240 VOLT WELL PUMPS WITH 2-, 3- OR 4-WIRE CONNECTION.

SoftStart Well Pump™ twistlock wire connectors accommodate 12 and 14 gauge solid wiring.

Turn off all power to the pump and confirm it’s off. Never work on live circuits.
Confirm well pump is 120V or 240V. If circuit breaker is a double-wide 2-pole breaker (refer to A), then it is a 240V well pump.
Locate the wire from the circuit breaker panel going to the pressure switch feeding the well pump.
Find a good location on the wall to install SSWP with appropriate screws.
Cut the Romex wire near the center of the SSWP box.
Strip back approximately 1” of the outer cable sheath.
Strip back approximately 3/16” of the coverings on the black and red wires. NOTE: Electrical code allows black and white wires to be used for 2-pole 240-volt service as along as the white wire is marked with black tape at the circuit breaker.
If using 14-gauge solid Romex wire, don’t remove the spring clamps in twist-lock connectors (refer to B).
If using thicker 12-gauge solid Romex wire, back the terminal screws out to remove the spring clamps. Then tighten terminal screws onto wires.
Assemble the Blue connector to the wire from the Circuit Breaker Panel or Pump Disconnect Switch (shown in diagram).
Assemble the Gray connector to the wire going to the pump’s Pressure Switch.
Connect the SSWP to the new Blue and Gray connectors that were just wired.
Turn power on and check LED Indicator Sequence for proper startup and operation.

Well Pump Soft Start Installation With 120V Sources (Low Amperage)

To install SoftStart Well Pump™ (SSWP) to 120VAC/15 or 20-amp power source, you must build a power cord with the supplied blue PowerCon twistlock connector and a 15-amp power plug.

Turn off all power to the pump. Never work on live circuits.
Find a good location to install SSWP with appropriate fasteners.
Obtain a NEMA 5-15P male plug (with 3 straight prongs – purchased separately).
Obtain 14- or 12-gauge cable to match pump HP size (see chart at left). If plugging into a generator, be sure cable length is long enough to keep generator exhaust way from living areas (max. 25-ft. length if possible).
Connect one end of cable wires to NEMA 5-15P male plug. See plug wiring diagram at left (Step 5).
Disassemble the BLUE PowerCon connector and connect the other end of power cable wires to BLUE PowerCon connector (shown below). See connector wiring diagram at left (Step 6).
Reassemble BLUE PowerCon connector.
Measure and cut a second length of power cable to run between SSWP location and the pump’s Pressure Switch.
Repeat procedures in Step 6 using the WHITE PowerCon connector (Step 9).
Connect other end of WHITE PowerCon connector cable to Pressure Switch.
Complete all other pump system electrical connections and test.

Well Pump Soft Start INSTALLATION WITH 120V GENERATOR (high amperage)

To install SoftStart Well Pump™ (SSWP) to 120VAC/30-amp source, you must build a power cord with the supplied blue PowerCon twistlock connector and a 3-prong, 30-amp twistlock plug.

Turn off all power to the pump. Never work on live circuits.
Find a good location to install SSWP with appropriate fasteners.
Obtain a NEMA L-5 30 male plug (with 3 curved prongs – purchased separately).
Obtain 14- or 12-gauge cable to match pump HP size (see chart at left). Be sure cable length is long enough to keep generator exhaust way from living areas (max. 25-ft. length if possible).
Connect one end of cable wires to NEMA L-5 30P male plug. See plug wiring diagram at left (Step 5).
Disassemble the BLUE PowerCon connector and connect the other end of power cable wires to BLUE PowerCon connector (shown below). See connector wiring diagram at left (Step 6).
Reassemble BLUE PowerCon connector.
Measure and cut a second length of power cable to run between SSWP location and the pump’s Pressure Switch.
Repeat procedures in Step 6 using the WHITE PowerCon connector (Step 9).
Connect other end of WHITE PowerCon connector cable to Pressure Switch.
Complete all other pump system electrical connections and test.

To install SoftStart Well Pump™ (SSWP) to 240VAC/30-amp source, you must build a power cord with the supplied blue PowerCon twistlock connector and a 4-prong, 30-amp twistlock plug.

Turn off all power to the pump. Never work on live circuits.
Find a good location to install SSWP with appropriate fasteners.
Obtain a NEMA L-14 30P male plug (with 4 curved prongs – purchased separately).
Obtain 14- or 12-gauge cable to match pump HP size (see chart at left). Be sure cable length is long enough to keep generator exhaust way from living areas (max. 25-ft. length if possible).
Connect one end of cable wires to NEMA L-14 30 male plug. See plug wiring diagram at left (Step 5).
Disassemble the BLUE PowerCon connector and connect the other end of power cable wires to BLUE PowerCon connector (shown below). See connector wiring diagram at left (Step 6).
Reassemble BLUE PowerCon connector.
Measure and cut a second length of power cable to run between SSWP location and the pump’s Pressure Switch.
Repeat procedures in Step 6 using the WHITE PowerCon connector (Step 9).
Connect other end of WHITE PowerCon connector cable to Pressure Switch.
Complete all other pump system electrical connections and test.

SoftStart Well Pump™ Technical Details:

Why People Choose SoftStart Well Pump™

Keep your well water flowing indoors, all year round, using the most trusted well pump soft starter.

Get a SoftStart Well Pump™ Now.

Cuts Start-Up Power Up To 50%

SoftStart Well Pump™ delivers more efficient cooling and heating startup with main and backup power sources. Helps keep power demand down during peak periods.

Prevents Rough Starts

No more violent startups causing or dimming lights. Reduces stress on the motor and compressor; extends well pump life.

Easy Install For DIY-ers

You get a free install kit, easy to read instructions, and Live facetime calls with our support team. They'll ensure your SoftStart Well Pump™ runs at optimal efficiency.

Free Shipping in The USA & Canada

We gladly provide this to customers via UPS or DHL. Customers typically receive their products in 2-3 business days.

90-Day Satisfaction Guarantee

Try SoftStart Well Pump™ for 90 days. If you don’t absolutely love it, return it within the 90 days for a 100% refund. It's that simple.

No Restocking Fees

We don't charge 25% re-stocking fees like competitors, or require complicated Return forms. We'll pay return shipping, and give you a FULL refund within the 90 days.

Why People Choose SoftStart Well Pump™ Over Other Soft Starters

See why thousands of people prefer SoftStart Well Pump™ than any other soft start.

Full Waterproof Protection

Longest Free Trial Period

Longest Warranty Period

Full Money Back Guarantee

Live Tech Support Available

Generator Power Friendly

No Re-Stocking Fee Policy

Easy DIY Install

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Based on 107 Reviews By Happy Customers

What people are saying about SoftStart Well Pump™

Read through some reviews and see what real people say about SoftStart Well Pump™

I really like the SoftStart Well Pump™ made by SoftStartUSA because it stops my well pump from slamming

Ian M Burke

I really like the SoftStart Well Pump™ made by SoftStartUSA because it stops my well pump from slamming on all at once when it starts up. Right now, this cool device fixes the problem of my lights flickering and my breakers tripping by slowly feeding power to the motor. I also loved how easy it was to plug right into my well house setup, and see the green light turn on. In the future, this will completely change my living experience because it will help me pump my well water on a smaller solar power system.

I really loved how simple it was to install

Off Grid Solar Living - SoftStart Well Pump™ owner

I used to hate hearing a heavy thump, and seeing my power inverter flash an overload warning every time my water pump turned on.The SoftStart Well Pump™ from SoftStartUSA fixed this problem for my off-grid home right away. I really loved how simple it was to install, and how it smoothly lowered the big power surge to make my system run. In the future, I know this gentle start will keep my inverter safe, and help my well pump last a lot longer.

how easy it was to install the SoftStart Well Pump™

UnpluggedTexan

I really loved how easy it was to install the SoftStart Well Pump™, taking me just about an hour to set up. Before this, my deep well pump used a huge burst of power that pushed my home's solar power system way too hard. Now, it solves my problem by lowering the starting power by up to around 41%, so my equipment doesn't struggle to pump water anymore. In the future, I will be able to easily use a standard gas generator to get water pumping through my faucets if the power goes out.

Frequently Asked Questions

Got questions? We’ve got answers! Click to see all FAQs

Can I use a clamp meter with this product?

No. Clamp meters may not provide accurate inrush reduction results. Due to their methods of measuring current inrush data, Standard Clamp Meters and True RMS Clamp Meters are too slow to capture the high speed current reduction from the SSWP that's happening 120 times per second.

What does a softstarter do for my well pump?

A soft starter helps your pump start smoothly instead of with a hard jolt. It controls the power flow when your pump turns on, which helps stop breaker trips, water hammer, and motor wear. This means less stress on your pump and a longer life for your system.

Will this soft starter work with my generator?

Yes! This soft starter is designed to work with backup or portable generators. It lowers the startup power surge, so your generator doesn’t overload or shut down. It’s ideal for most any home on well water.

NOTE: The SoftStart Well Pump unit may not operate properly with contractor/non-inverter generators due to their high harmonic distortion (THD).

Do I need an electrician to install it?

It’s a VERY easy connection, but we recommend consulting a qualified electrician for safety and electrical code requirements. The soft starter connects with basic line-in and line-out wiring and comes with clear instructions. Installations take about 20 minutes once wiring is ready!

How does it protect my pump and electrical system over time?

A soft starter eases your pump up to speed, instead of slamming it with full power. This cuts down on wear and tear, prevents pipe damage, and keeps your motor from burning out. Over time, that means fewer repairs and lower power bills.

What’s the difference between a soft starter and a VFD (Variable Frequency Drive)?

A soft starter is designed to reduce the electrical surge and mechanical shock that happens when a motor starts. It gradually increases voltage, letting the pump ramp up smoothly before running at full speed. Once the motor is running, the soft starter simply passes power through, it doesn’t control speed.

A VFD (Variable Frequency Drive), on the other hand, controls both the voltage and the frequency of the power going to the motor. This means it can adjust the pump’s speed and pressure continuously during operation, not just at startup. Because a VFD already includes built-in soft-start and soft-stop functions, you do not need a separate soft starter when using one.

Simply put - if you have a VFD controller on your well pump, you do not need a soft starter.

Order Your SoftStart Well Pump™ Today.

SoftStart Well Pump™ ensures steady flowing water from your water well. It will:

- Help your pump start smoothly, without a hard jolt.
- Control pump startup power, and prevent tripping breakers, excess water pressure and motor wear.
- Reduce stress on your pump, prolonging its life.
- Prevent overload or shutdown of generators.
- Install easily – but consult an electrician to be safe.
- Take about 20 minutes to install once the wiring is ready.

1 Year Factory Warranty.
90-Day, 100% Refund Guarantee
FREE Live USA Based Tech Support And more!

ADD TO CART NOW

SoftStart Well Pump™ – 120V and 240V Water Well Pump Soft Start

DESCRIPTION

KEY FEATURES

SPECIFICATIONS

FAQ

SoftStart Well Pump™ Ensures You Have Fresh Water Flowing During Normal and Low Power Situations

Based on 107 Reviews By Happy Customers

What SoftStart Well Pump™ Owners Are Saying...

But Don't Take Our Word For It...

It Works So Fast, Portable Meters Can't Measure It Working!

3 Easy Steps to Steady Well Water Daily - Guaranteed.

Place your order

Get Fast Shipping

Enjoy Steady Well Water This Year

The Most Trusted Soft Start For Well Pump Brands Available Today.

SoftStart Well Pump™ Technical Details:

Why People Choose SoftStart Well Pump™

Keep your well water flowing indoors, all year round, using the most trusted well pump soft starter.

Cuts Start-Up Power Up To 50%

Prevents Rough Starts

Easy Install For DIY-ers

Free Shipping in The USA & Canada

90-Day Satisfaction Guarantee

No Restocking Fees

Why People Choose SoftStart Well Pump™ Over Other Soft Starters

See why thousands of people prefer SoftStart Well Pump™ than any other soft start.

What people are saying about SoftStart Well Pump™

Read through some reviews and see what real people say about SoftStart Well Pump™

Frequently Asked Questions

Got questions? We’ve got answers! Click to see all FAQs

Order Your SoftStart Well Pump™ Today.

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