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💧 BP403 | 4.0HP (3.0kW) Three-Phase Commercial Pool Pump – 230/400V

Powerful, Efficient Water Circulation for Large-Scale Swimming Pool Applications 💪

📋 Product Overview

The Certikin BP403 is a professional-grade, three-phase centrifugal pump engineered specifically for demanding commercial and large residential swimming pool applications. Delivering an impressive 4.0HP (3.0kW) of power, this pump is designed to handle high-volume water circulation in water parks, leisure centres, hotel pools, and luxury private installations where reliability and performance are non-negotiable.

Built with corrosion-resistant materials including a cast iron body, bronze impeller, and stainless steel components, the BP403 combines robust construction with energy-efficient IE3 motor technology. Its self-priming design and integral strainer box make installation and maintenance straightforward, while the 3000rpm motor ensures powerful, consistent water movement for pools up to 180m³ capacity.

Whether you’re upgrading an aging pump system or specifying equipment for a new commercial installation, the BP403 delivers the perfect balance of power, efficiency, and longevity that large-scale pool operations demand.

⭐ Key Features

✅ 4.0HP (3.0kW) Three-Phase Motor – Delivers powerful, reliable circulation for pools up to 180m³, ensuring thorough filtration and chemical distribution even in the most demanding commercial environments

✅ IE3 Energy-Efficient Motor – Premium efficiency rating reduces electricity consumption by up to 20% compared to older IE1 motors, cutting operational costs without compromising performance

✅ Self-Priming Capability – Automatically primes up to 2 metres suction lift, eliminating manual intervention and ensuring reliable restart after maintenance or power interruptions

✅ Corrosion-Resistant Construction – Cast iron body with bronze impeller and stainless steel shaft withstands harsh pool chemicals and continuous operation for 15+ year service life

✅ Integral Stainless Steel Strainer – Built-in debris basket with quick-release lid protects pump internals and simplifies routine maintenance, reducing downtime and repair costs

✅ Dual Voltage Configuration (230/400V) – Flexible three-phase power options accommodate diverse electrical installations across commercial and industrial pool facilities

✅ IP55 Protection Rating – Dust-protected and water-resistant enclosure suitable for indoor and covered outdoor installations, even in humid pool environments

✅ 3000rpm High-Flow Design – Optimised for circulating large volumes of water at low pressure, maximising filtration efficiency while minimising energy consumption

✅ Heavy-Duty 100mm Flanged Connections – Industrial-grade PN10 discharge flange and 80mm suction flange ensure leak-free operation and compatibility with commercial pool plumbing systems

🔧 Technical Specifications

Specification	Detail
Model	BP403
Power Output	4.0HP (3.0kW)
Motor Speed	3000 rpm
Phase	Three-Phase (3Ø)
Voltage	230/400V, 50Hz
Running Current	6.2 Amps
Protection Rating	IP55 (Dust & Water Resistant)
Motor Efficiency	IE3 (Premium Efficiency)
Self-Priming	Yes (up to 2m suction lift)
Body Material	Cast Iron
Impeller Material	Bronze (Corrosion Resistant)
Shaft Material	Stainless Steel
Shaft Seal	Mechanical Seal
Strainer Basket	Stainless Steel
Maximum Water Temperature	40°C
Maximum Operating Pressure	2.1 Bar
Maximum Room Temperature	40°C
Total Suction Lift	Up to 2 metres
Suction Connection	80mm Flange (PN10 compatible)
Discharge Connection	100mm Flange (PN10 compatible)
Flange Standard	BS4505 PN10 Compatible
Dimensions (L × W × H)	807mm × 420mm × 320mm
Mounting Hole Centres	144mm × 84mm
Weight	62kg
Warranty	2 Years Manufacturer Warranty
Standards Compliance	CE Certified

💰 Usage Costs & Running Expenses

📊 Annual Running Cost Calculation

The BP403’s IE3-rated motor delivers significant energy savings compared to older pump technology. Here’s what you can expect:

💡 BP403 Operating Costs:

• Power Consumption: 3.0 kW
• Typical Usage: 10 hours/day × 250 days/year = 2,500 hours annually
• UK Energy Rate: £0.24 per kWh (2024 average commercial rate)
• ✅ Annual Running Cost: 3.0 kW × 2,500 hours × £0.24 = £1,800/year

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💵 Cost Comparison: BP403 vs. Older Technology

🏊 Scenario 1: Municipal Leisure Centre Pool

📍 Situation: Replacing a 15-year-old 4HP pump with IE1 motor efficiency

❌ Old Pump Annual Cost:

• Power consumption: 3.5 kW (IE1 motor, 15% less efficient)
• Usage: 10 hours/day × 250 days = 2,500 hours
• Cost: 3.5 kW × 2,500 × £0.24 = £2,100/year

✅ BP403 Annual Cost: £1,800/year

💰 Annual Savings: £300/year
📈 5-Year Savings: £1,500
⏱ Payback Period: Approximately 2.5 years (including installation)

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🛁 Scenario 2: Hotel Pool Operating Year-Round

📍 Situation: 24/7 commercial hotel pool requiring continuous circulation

❌ Previous System (3.5HP oversized pump):

• Power consumption: 3.8 kW (inefficient oversized operation)
• Usage: 16 hours/day × 365 days = 5,840 hours
• Cost: 3.8 kW × 5,840 × £0.24 = £5,330/year

✅ BP403 Optimised System:

• Power consumption: 3.0 kW (right-sized, IE3 efficiency)
• Usage: 16 hours/day × 365 days = 5,840 hours
• Cost: 3.0 kW × 5,840 × £0.24 = £4,205/year

💰 Annual Savings: £1,125/year
📈 5-Year Savings: £5,625
💷 10-Year Savings: £11,250

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⚡ Energy Efficiency Advantage

The BP403’s IE3 motor delivers:

• 15-20% lower energy consumption compared to standard IE1 motors
• Reduced carbon footprint: Approximately 0.8 tonnes CO₂ saved annually (based on UK grid average)
• Consistent performance: Maintains efficiency even under varying load conditions

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🎯 Real World Applications & Examples

🏊‍♂️ Municipal Swimming Pools & Leisure Centres

The BP403 is ideal for 25-metre public pools requiring robust, continuous circulation. Its 3.0kW motor efficiently handles high bather loads, maintaining water clarity during peak usage times. The self-priming feature ensures reliable operation even after routine maintenance, minimising downtime in busy facilities.

🏢 Hotel & Resort Pool Systems

Perfect for commercial hotel pools operating year-round, the BP403’s corrosion-resistant bronze impeller and stainless steel components withstand continuous chemical exposure. The IP55 rating makes it suitable for plantrooms in humid environments, while the IE3 motor keeps operational costs predictable for facility managers.

🌊 Water Park & Splash Pool Installations

The BP403 handles the demanding circulation requirements of water attractions, moving large volumes efficiently. Its integral strainer basket captures debris from high-traffic areas, while the quick-release lid enables rapid cleaning between operating sessions.

🏠 Large Residential & Estate Pools

Luxury homes with pools exceeding 100m³ benefit from the BP403’s powerful yet efficient operation. The 230/400V flexibility accommodates both standard and industrial electrical supplies, while the two-year warranty provides peace of mind for high-value installations.

🔄 Commercial Pool Retrofits & Upgrades

When replacing aging single-phase pumps with three-phase equipment, the BP403 offers immediate energy savings. Its standardised PN10 flanges simplify installation, and the compact 807mm length fits most existing plantroom layouts without modification.

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💡 Cost Savings Examples

📍 Example 1: Upgrading from Single-Phase to Three-Phase

Scenario: Community pool replacing 4HP single-phase pump with BP403

❌ Old Single-Phase Pump:

• Power consumption: 4.2 kW (less efficient single-phase motor)
• Annual usage: 2,500 hours
• Annual cost: 4.2 × 2,500 × £0.24 = £2,520

✅ New BP403 Three-Phase:

• Power consumption: 3.0 kW
• Annual usage: 2,500 hours
• Annual cost: 3.0 × 2,500 × £0.24 = £1,800

💰 Savings: £720/year
📈 5-Year Total Savings: £3,600
⏱ Investment Recovery: 18-24 months

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📍 Example 2: Right-Sizing from Oversized Pump

Scenario: Gym pool reducing from unnecessarily powerful 5.5HP pump to BP403

❌ Oversized 5.5HP Pump:

• Power consumption: 4.1 kW (running inefficiently at partial load)
• Annual usage: 3,000 hours
• Annual cost: 4.1 × 3,000 × £0.24 = £2,952

✅ Correctly-Sized BP403:

• Power consumption: 3.0 kW (operating at optimal efficiency point)
• Annual usage: 3,000 hours
• Annual cost: 3.0 × 3,000 × £0.24 = £2,160

💰 Savings: £792/year
💷 Maintenance Savings: Additional £150-200/year (reduced wear on oversized system)
📊 Combined Annual Benefit: £950-990/year

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📍 Example 3: Energy Price Protection

Future-Proofing Your Investment:

With energy costs potentially rising, the BP403’s efficiency becomes increasingly valuable:

Energy Rate	Old Pump (3.5kW)	BP403 (3.0kW)	Annual Saving
£0.24/kWh (current)	£2,100	£1,800	✅ £300
£0.30/kWh (scenario)	£2,625	£2,250	✅ £375
£0.36/kWh (scenario)	£3,150	£2,700	✅ £450

💡 Every kW of efficiency matters more as energy costs rise

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📥 Downloads & Resources

📄 Installation & Maintenance Manual – Complete installation instructions, wiring diagrams, maintenance schedules, and troubleshooting guide (PDF)

📄 BP Range Product Brochure – Technical specifications, performance curves, dimensional drawings, and full BP pump range comparison (PDF)

📄 Performance Curve Chart – Flow rate vs. head performance data for system design calculations (PDF, page 20)

📄 Dimensional Drawing – Detailed measurements, mounting hole centres, and flange specifications for installation planning (PDF, page 21)

All PDF links open in a new tab for your convenience

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🏆 Why Choose the BP403?

✅ Commercial-Grade Reliability – Engineered for continuous operation in demanding pool environments, with proven performance in leisure centres, hotels, and water parks across the UK

✅ Long-Term Cost Savings – IE3 motor efficiency typically saves £300-1,100 annually compared to older pump technology, recovering your investment within 2-3 years

✅ Minimal Maintenance Requirements – Stainless steel strainer basket and bronze impeller resist corrosion, while mechanical seal technology eliminates routine seal replacements common in older designs

✅ Future-Proof Energy Efficiency – Premium IE3 rating ensures compliance with current energy standards while protecting against rising electricity costs

✅ Trusted UK Brand – Certikin is the leading supplier to the UK pool industry with over 50 years’ experience and nationwide technical support network

✅ Flexible Installation Options – Self-priming up to 2m, suitable for above or below water level installation, with standardised PN10 flanges for easy integration

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🛒 Why Buy From Parts4tubs?

✅ Specialist Pool Equipment Supplier – Over 15 years’ experience supplying commercial and residential pool equipment across the UK

✅ Competitive Trade Pricing – Direct relationships with manufacturers mean you get the best prices without compromising on quality or support

✅ Fast, Reliable Delivery – Next-day delivery available on stock items, with full tracking and secure packaging for heavy equipment

✅ Expert Technical Support – Our team of qualified pool engineers can advise on pump selection, system design, and installation requirements

✅ Genuine Manufacturer Products – All pumps come with full manufacturer warranty and are sourced directly from authorised UK distributors

✅ Easy Returns & Support – 30-day returns policy and dedicated after-sales support for any technical queries or warranty claims

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✨ Summary

The Certikin BP403 4.0HP Three-Phase Commercial Pool Pump represents the perfect combination of power, efficiency, and reliability for large-scale swimming pool applications. With its IE3-rated motor delivering up to £1,100 annual savings compared to older technology, corrosion-resistant construction ensuring 15+ years service life, and self-priming design simplifying installation and maintenance, the BP403 is the intelligent choice for commercial pool operators and large residential installations. Whether you’re upgrading an existing system or specifying equipment for new construction, the BP403 delivers professional-grade performance that pays for itself through lower energy costs and reduced maintenance requirements.

Invest in proven commercial pump technology – Choose the BP403 for powerful, efficient, cost-effective pool circulation.

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Ready to upgrade your pool circulation system? Contact our technical team today for personalised advice on the BP403 and complementary system components.