RPS 400N - 2 Inch Solar Well Pump Kit
RPS Solar Pumps
Regular price
$2,799.00
$1,999.00
Sale
SALE + FREE SHIPPING!*
America's #1 Most Trusted Solar-Powered Water Pump
RPS Solar Pump Kits are for people that believe in getting the job done themselves, and getting it done right. Our goal is to arm you with the equipment and knowledge to take control of your water and save a fistful of money doing it. Our Pledges to You
The newly redesigned Narrow pump is a miraculous 2.01" in diameter and the first of it's kind. Yes, it can sneak in next to an existing pump/drop-pipe in a 6" well casing to act as a backup redundant pump, or if a pump is stuck down in the well. It fits 2.5" and 3" casings that are so common in old windmills. Finally a solution for windmill wells that could never take a submersible pump before!!
Like our 3" pumps it features a helical rotor. These pumps are designed to operate on solar power alone and feature a brushless DC motor to keep temperature down and efficiency up in a tight well casing. And to give you more flexibility and peace of mind, batteries or a generator can be used to supplement as needed. The most efficient brushless permanent magnet motors mean no replacement of carbon brushes and years of smooth, reliable performance. Lifetime Rotor Warranty and the only field-serviceable pump available save you thousands over other options.
Gallons to Expect from RPS 400N
* Based on a 6 hour solar pumping day
Gallons Per Day | GPM | |
No Head | 2088 | 5.8 |
25 ft |
1980 | 5.5 |
50 ft | 1872 | 5.2 |
75 ft | 1764 | 4.9 |
100 ft | 1656 | 4.6 |
125 ft | 1620 | 4.5 |
150 ft | 1512 | 4.2 |
175 ft | 1404 | 3.9 |
200 ft | 1116 | 3.1 |
225 ft | 828 | 2.3 |
250 ft | 360 | 1.0 |
Need a different model?
3 inch: RPS 200, RPS 400, RPS 600, RPS 800, RPS 400V, RPS 800V,
4 inch: Pro V Series, Pro D Series or use the popular online Sizing Wizard.

Complete the Sizing Step of the WATER ASSURANCE PLAN™ with any RPS Team Member at 888-637-4493 and RPS Guarantees Water From Your Pump After Proper Installation or Your Money Back! Start Sizing Now »
RPS 400N Kit contains:
- 4x RPS 100 Watt Rugged Aluminum Framed Mono-Crystalline Solar Panels (Dimensions are roughly 3.75' long, 1.6' wide and a little more than 1" thick)
- RPS Helical Rotor Pump (2.01" OD) with DC Brushless Permanent Magnet Motor
- RPS Pump Controller with Industry Leading Efficiency + Smooth Start/Stop
- 1/2" MNPT thread to 3/4" hose barb and hose clamps for use with 3/4" black poly pipe
- 1x Low-water Well Level sensor with 100ft wire attached
- 1x Tank Shut-off sensor with 100ft wire attached
- Solar Panel cable connectors
- Waterproof heatshrink wire splice kit with pre-crimped pump wires
- Detailed full-color solar pump guide with step-by-step install instructions
- Access to RPS video archives of installation tips & product walkthroughs
- 30 Day Money-Back & 100% Water Assurance Guarantee
- Lifetime Rotor Warranty which is only wear part and Field Serviceable
- 2 Year Comprehensive Warranty
- Phone / Email / Text Support from Friendly USA based RPS Engineers
Features of RPS Controllers Multiple Sensor Inputs Tank High & Well Low sensors Variable Frequency Control with MPPT Cycling Protection Timer Exterior Shut-off Switch |
Features of RPS Pumps
Slow Start/Stop for LongevityBrushless Motor Technology Serviceable in the Field Stainless Steel Body
Lifetime Rotor Warranty |
No batteries required! Batteries or a generator can be used later as backup with the proper hardware, but most customers find they get much more water than they expect with solar alone! That sun up there is amazing!
No batteries required! Batteries or a generator can be used later as backup with the proper hardware, but most customers find they get much more water than they expect with solar alone! That sun up there is amazing!
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Solar Panels: 47”x 20”x 1.18”, 100W / 12V, ~15lbs Well Pump: 2.01" OD, 1/2" Outlet, 24" Long, ~12lbs Controller: 13” x 8” x 6”, ~10lbs |
We feel it important to mention that our team is not on commission so expect our help, not pressure to purchase. Our job is to help get you water, not sell you something that isn't a good fit for you or your well. It's why thousands of American farms & ranches trust RPS. Note from RPS co-owner Mike.
Rather a Friendly voice? Our famous support team is here to help!
888-637-4493
*Note: Free shipping unfortunately only available for contiguous 48 states. Subsidized shipping available for Hawaii, Alaska, Mexico and Canada!
Rather a Friendly voice? Our famous support team is here to help!
888-637-4493
Customer Reviews
good morning I would like to know if this pump is capable of pumping water at night or only pumps water during the day I am interested in buying one but I would like to corroborate that information and know if there is another method using batteries so that it can work at night Well, I need to install one in my house
As soon as I installed the pump controller it started right up. I've been impressed with it pumping during complete cloud cover and even while snowing a couple weeks ago