BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)

The BritTherm S4 25/4-180 Circulator Pump offers intelligent circulation for potable water systems, designed with a longer 180mm body and 1" BSP connections. With 9 smart operating modes including AUTO, constant pressure, and proportional pressure settings, this pump ensures efficient, reliable performance tailored to system demand. It’s housed in durable stainless steel and features electrical and thermal protection for long-term safety.

The BritTherm Circulator Pump S4 25/4-180 is built for installers and engineers looking for efficiency, flexibility, and dependability in potable water circulation. Its extended 180mm length makes it ideal for replacing pumps in systems with longer fixing centres. With nine intelligent operating modes, including energy-saving AUTO and Night Mode, the pump dynamically adjusts to varying flow demands without manual recalibration.

It features three “Old School” fixed-speed settings, two constant pressure (CP1, CP2), and two proportional pressure (PP1, PP2) modes for advanced control. Constructed with an EN1.4521 stainless steel casing, it’s safe for potable water use and protected against overheating and electrical faults. Whether you're fitting new or retrofitting existing pipework, this pump is a top-tier solution.

Features & Benefits:
✅ 180mm pump length with 1" BSP connections
✅ Hygienic EN1.4521 stainless steel construction
✅ 9 smart operation modes including AUTO and Night Mode
✅ Classic 3-speed manual control option
✅ Constant pressure settings: CP1 & CP2
✅ Proportional pressure settings: PP1 & PP2
✅ Night Mode lowers energy use to 5W
✅ Built-in electrical and thermal protection
✅ Ideal for potable water circulation systems
✅ Excellent for both domestic and light commercial use

• Programs = 9 Control Programs
• Maximum Head (Meters) = 4
• Flow (m3/h) = 2.6
• Power = 5~22
• Connection Size = 1 ½”
• Energy Efficiency Index Rating (EEI) = EEI≤0.17
• Maximum System Pressure (KPA) = 10 Bar
• Protection Class = IP44
• Temperature Class = TF 95°C
• Insulation Class = F
• Material = Stainless Steel
• Supplied With (Loose in Box) = A set of brass threaded connections designed for fastening to pipes, high-temperature rubber gaskets, electrical cable 1.3 m long, insulation foam, data sheet and warranty instructions.

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