💧 SR1003N | 1HP (0.75kW) Sta-Rite 5P2R Three-Phase Pool Pump – 1.5″ Suction & Delivery

Professional-grade reliability meets exceptional energy efficiency for residential and domestic pool installations

📋 Product Overview

The Sta-Rite 5P2R Series SR1003N represents the gold standard in residential and domestic pool pump technology. This robust 1HP (0.75kW) three-phase pump combines Pentair’s legendary build quality with genuine OEM components, delivering outstanding performance for larger domestic pools, private swimming facilities, and residential installations requiring commercial-grade reliability.

Manufactured entirely by Pentair at their Pisa, Italy facility, the SR1003N features advanced material engineering with reinforced fiberglass construction and premium stainless steel components throughout. The three-phase motor design provides superior energy efficiency compared to single-phase alternatives, making it an intelligent choice for pool owners seeking to minimize operating costs whilst maintaining exceptional water circulation performance.

Designed specifically for permanent swimming pool installations, this self-priming pump excels in domestic applications where reliability, efficiency, and long-term cost savings are paramount. Whether you’re maintaining a large residential pool, private leisure facility, or upgrading from older, less efficient equipment, the SR1003N delivers professional performance with residential-friendly installation and maintenance.

⭐ Key Features

✅ 100% Pentair-Manufactured Quality – Entirely produced at Pentair’s Pisa, Italy plant with rigorous quality control ensuring genuine OEM specifications and long-term reliability

✅ High-Efficiency Three-Phase Motor – IE2/IE3 compliant induction asynchronous motor delivers superior energy efficiency, running approximately 15-20% more efficiently than equivalent single-phase motors whilst operating cooler and quieter

✅ Precision-Engineered Fiberglass Body – Reinforced fiberglass construction provides exceptional temperature and corrosion resistance whilst remaining lightweight; engineered specifically for high-pressure operations with outstanding durability

✅ Premium Stainless Steel Components – Bi-material shaft featuring AISI 304 stainless steel drive-end, stainless steel pump clamp, and high-grade internal components ensure maximum corrosion resistance and extended service life

✅ XL 5-Inch Lock-In Strainer Basket – Oversized basket capacity significantly extends periods between cleaning whilst the clear ‘see-through’ lid (rated to 4 bar test pressure) allows instant visual inspection without system shutdown

✅ Self-Priming Diffuser Design – Engineered for efficient operation and easy start-up, capable of lifting water up to 2.5 meters with reliable priming typically achieved within 5 minutes

✅ Advanced Mechanical Seal Technology – Precision-lapped carbon ceramic stainless steel seal is highly polished for maximum drip-proof protection and corrosion-free operation throughout the pump’s lifespan

✅ Quick-Access Maintenance – Removable stainless steel clamp provides tool-free access to all serviceable components, dramatically reducing maintenance time and enabling rapid upgrades to variable speed configurations

✅ High-Performance Glass-Filled Impeller – Precision-molded polycarbonate impeller engineered with smooth water passages delivers exceptional hydraulic efficiency and consistent performance across varied operating conditions

✅ SKF Sealed Bearings & Thermal Protection – Premium sealed and permanently lubricated bearings combined with integrated thermal protection ensure reliable operation even in high ambient temperatures with extended motor life

🔧 Technical Specifications

Specification	Detail
Model Number	SR1003N (P-STR-103E3)
Power Output	1HP (0.75kW)
Voltage	380-420V
Phase	3 Phase
Motor Type	Induction asynchronous, IE3 compliant
Frequency	50Hz
Suction Connection	1.5″ BSP
Delivery Connection	1.5″ BSP
Union Diameter	50mm Internal (unions included)
Maximum Flow @ 8m Head	16 m³/h
Construction Material	Reinforced fiberglass
Impeller Material	Glass-filled polycarbonate
Shaft Material	Bi-material with AISI 304 stainless steel drive-end
Mechanical Seal	Carbon ceramic stainless steel, precision-lapped
Strainer Basket	5″ XL capacity, lock-in design
Strainer Lid	Clear see-through, 4 bar test pressure rated
Bearings	SKF sealed and permanently lubricated
Thermal Protection	Integrated
Salt Tolerance	0.40% (4 g/l) – NOT suitable for salt chlorinated systems above this level
IP Rating	IP-X5
Maximum Suction Lift	2.5 meters
Mounting Base	Hi-Rise design for stability
Dimensions (L×W×H)	514mm × 288mm × (varies with motor height)
Weight	25 kg
Compliance Standards	EN 60335-1, EN 60335-2-41, EN 61000-6-1, EN 61000-6-3, EN 55014-1, EN 55014-2, EN 60034-30

💰 Usage Costs & Running Expenses

📊 Annual Running Cost Calculation

Power Consumption Analysis:

• Motor Power: 0.75 kW
• UK Commercial Electricity Rate: £0.26 per kWh (Q4 2024 average for non-domestic users)

🏊 Typical Residential Pool Operation (6-Month Season):

• Daily Operation: 6 hours per day
• Seasonal Duration: 180 days (April–September)
• Annual Hours: 1,080 hours
• ✅ Annual Cost: 0.75 kW × 1,080 hours × £0.26 = £210.60

🏊‍♂️ Year-Round Heated Pool Operation:

• Daily Operation: 8 hours per day
• Annual Days: 365 days
• Annual Hours: 2,920 hours
• ✅ Annual Cost: 0.75 kW × 2,920 hours × £0.26 = £569.40

☀️ Light Summer Use (Economical Operation):

• Daily Operation: 4 hours per day
• Seasonal Duration: 150 days
• Annual Hours: 600 hours
• ✅ Annual Cost: 0.75 kW × 600 hours × £0.26 = £117.00

⚡ Three-Phase Efficiency Advantage

Compared to an equivalent single-phase 1HP pump consuming approximately 0.90 kW:

💵 Seasonal Operation Comparison:

• ❌ Single-phase annual cost: 0.90 × 1,080 × £0.26 = £252.72
• ✅ Three-phase annual cost: 0.75 × 1,080 × £0.26 = £210.60
• 💰 Annual Saving: £42.12
• 📈 3-Year Saving: £126.36

💷 Year-Round Operation Comparison:

• ❌ Single-phase annual cost: 0.90 × 2,920 × £0.26 = £683.28
• ✅ Three-phase annual cost: 0.75 × 2,920 × £0.26 = £569.40
• 💰 Annual Saving: £113.88
• 📈 5-Year Saving: £569.40

The three-phase motor’s superior efficiency delivers approximately 16.7% energy savings compared to single-phase alternatives, with the added benefits of cooler operation, extended motor life, and reduced maintenance requirements.

🎯 Real World Examples & Applications

🏠 Large Residential Pools (60-100m³) Ideal for substantial domestic pool installations where reliable daily filtration is essential. The 16 m³/h flow capacity at 8m head provides complete water turnover multiple times daily, ensuring crystal-clear water quality. Three-phase power availability in many larger residential properties makes this pump a natural choice for homeowners prioritizing efficiency and performance.

🛁 Private Spa & Pool Combinations Perfect for properties featuring combined pool and spa installations requiring separate or shared circulation systems. The self-priming capability handles varied hydraulic configurations whilst the 1.5″ connections accommodate standard residential plumbing. Quiet operation ensures minimal disturbance to outdoor living spaces.

🏊‍♀️ Holiday Home Pool Systems Excellent for seasonal vacation property pools requiring robust equipment capable of withstanding extended idle periods and rapid seasonal commissioning. The sealed bearings and corrosion-resistant construction ensure reliable restart after winter shutdown, whilst the efficient motor minimizes energy costs during occupancy periods.

🔄 Upgrade from Aging Equipment Outstanding replacement for deteriorating older pumps in established pool installations. Direct compatibility with standard 1.5″ BSP plumbing simplifies retrofitting, whilst the stainless steel clamp design facilitates future upgrades to variable speed technology without replacing the entire pump assembly. Upgrading from 15+ year-old equipment can deliver 30-40% energy savings.

🌊 Estate & Manor House Pools Well-suited to larger residential pool installations on country estates where three-phase power infrastructure is typically available. The professional-grade construction and genuine Pentair manufacturing quality ensure the reliability expected in high-value residential applications, whilst the sealed bearing design handles varied ambient temperatures in outbuilding pump rooms.

💡 Cost Savings Examples

📍 Scenario 1: Upgrading from 15-Year-Old Single-Phase Pump

Situation: Replacing a worn 1HP single-phase pump from 2010 (estimated 1.0 kW consumption due to efficiency degradation) with the SR1003N three-phase pump.

Usage: Seasonal pool, 6 hours daily for 180 days

Calculation:

• ❌ Old pump annual cost: 1.0 kW × 1,080 hours × £0.26 = £280.80
• ✅ New SR1003N cost: 0.75 kW × 1,080 hours × £0.26 = £210.60
• 💰 Annual Saving: £70.20
• ⏱️ Simple Payback: Equipment cost recovered through energy savings
• 📈 5-Year Saving: £351.00

Additional benefits include quieter operation, reduced heat generation in pump room, and elimination of capacitor replacement costs common in aging single-phase motors.

📍 Scenario 2: New Installation vs. Budget Single-Phase Alternative

Situation: Choosing between SR1003N (£XXX) and a budget single-phase 1HP pump (£XXX) for new 80m³ residential pool installation.

Usage: Year-round heated pool, 8 hours daily

Calculation:

• ❌ Budget single-phase cost: 0.90 kW × 2,920 hours × £0.26 = £683.28
• ✅ SR1003N three-phase cost: 0.75 kW × 2,920 hours × £0.26 = £569.40
• 💰 Annual Saving: £113.88
• 📊 Over 10 years: £1,138.80 saved in energy costs alone
• ⏱️ Additional benefit: Genuine Pentair quality reduces maintenance and replacement costs

The premium invested in professional-grade equipment is recovered through energy savings whilst delivering substantially better reliability and longevity.

📍 Scenario 3: Protection Against Rising Energy Costs

Situation: Energy price sensitivity with current 2024 rates already 75% higher than 2021 levels.

Current Rate (£0.26/kWh) vs. Potential Future Rate (£0.32/kWh – Conservative 23% increase):

Seasonal Operation (1,080 hours):

• ⚡ At £0.26/kWh: £210.60 annually
• ⚡ At £0.32/kWh: £259.20 annually
• 💡 Efficiency savings with three-phase motor provide £42+ cushion against price increases

The SR1003N’s superior efficiency provides built-in protection against future energy price increases, with lower consumption reducing exposure to volatile electricity markets.

📥 Downloads & Resources

📄 Sta-Rite 5P2R Single Speed Pumps Installation & User Guide – Comprehensive installation manual with detailed safety instructions, electrical connection diagrams, troubleshooting guide, and maintenance schedules (PDF, multi-language)

📄 Sta-Rite 5P2R Series Product Datasheet – Technical specifications, performance curves, dimensions, and product range overview (PDF)

🏆 Why Choose the SR1003N?

✅ Genuine Pentair Quality – 100% manufactured in Pentair’s Pisa facility with complete quality control and genuine OEM specifications, not third-party imitations or budget alternatives compromising on component quality

✅ Superior Energy Efficiency – Three-phase motor technology delivers 15-20% energy savings compared to single-phase pumps, with IE3 compliance ensuring peak efficiency throughout the motor’s lifespan and substantial cost savings over years of operation

✅ Professional-Grade Construction – Reinforced fiberglass body, AISI 304 stainless steel components, SKF bearings, and precision-engineered impeller provide commercial-grade reliability in a residential-friendly package designed for decades of service

✅ Future-Proof Design – Removable stainless steel clamp enables straightforward upgrades to variable speed technology without complete pump replacement, protecting your investment and allowing adaptation to changing efficiency requirements

✅ Minimal Maintenance Requirements – Sealed and permanently lubricated bearings, corrosion-resistant materials throughout, and XL strainer basket design significantly reduce routine maintenance demands whilst tool-free access simplifies servicing when required

✅ Protection Against Salt Damage – Whilst not designed for high-concentration salt chlorinator systems, the 0.40% (4g/l) salt tolerance handles typical pool water chemistry and provides enhanced corrosion resistance compared to standard domestic pumps

🛡️ Why Buy From Parts4Tubs?

✅ Authorized Pentair Distributor – Direct supply chain ensuring genuine products with full manufacturer backing and warranty support

✅ Expert Technical Support – Knowledgeable team available to assist with product selection, installation guidance, and troubleshooting

✅ Competitive Pricing – Professional-grade equipment at accessible prices with transparent costing

✅ Fast UK Delivery – Efficient logistics ensuring prompt delivery to residential and trade customers nationwide

✅ Comprehensive Product Range – Complete pool and spa equipment selection allowing one-stop procurement for all your aquatic system needs

✨ Summary

The Sta-Rite SR1003N 1HP three-phase pool pump delivers exceptional value for domestic pool owners seeking professional-grade reliability combined with outstanding energy efficiency. Manufactured entirely by Pentair in Italy with genuine OEM components throughout, this pump represents a long-term investment in quality, performance, and operational economy. The three-phase motor provides substantial energy savings compared to single-phase alternatives, whilst the robust fiberglass construction and premium stainless steel components ensure decades of trouble-free operation. With annual running costs from just £117 for light seasonal use and proven energy savings exceeding £100 annually compared to older or less efficient equipment, the SR1003N combines superior engineering with genuine cost-effectiveness for discerning residential pool owners.

Important Safety Note: This pump is designed for permanent swimming pool installations and domestic use. Professional installation by a qualified technician is strongly recommended. Three-phase electrical connection must be performed by a licensed electrician in accordance with local electrical codes and regulations. This model is NOT suitable for salt chlorinated systems exceeding 0.40% (4g/l) salt concentration – contact Parts4Tubs for salt-compatible “SW” suffix models if required.