Calpeda CT 61 0.33kW Three Phase Periphreral Bare Pump (Max 40LPM/400kPa)

The Calpeda CT 61 Peripheral Pump is a compact close-coupled pressure pump designed for boosting pressure and circulating clean liquids in small water systems. Built with Calpeda’s patented compact construction, the pump integrates a single-piece motor casing and pump-side wall for improved durability and protection against water ingress into the motor. 

The CT series is well suited to installations where space is limited while still requiring reliable pressure performance. Its peripheral impeller design allows the pump to deliver relatively high pressure at lower flow rates, making it ideal for pressure boosting from water distribution networks, small circulation systems, and equipment applications.

The CT 61 model features a three-phase 0.33kW motor operating at approximately 2900 RPM, delivering flows up to 40LPM with pressures up to 400kPa, making it a practical solution for domestic, commercial, and light industrial systems where compact pressure boosting is required. 

FEATURES

• Compact peripheral close-coupled electropump design
• Patented single-piece motor casing and pump-side wall
• Construction designed to protect the motor from external water ingress
• Cast iron pump casing (CT version)
• Brass impeller and casing cover
• Carbon-ceramic mechanical seal with NBR
• 2-pole induction motor running at approximately 2900 RPM
• IE2 efficiency class motor
• Insulation class F
• IP54 protection rating
• Manufactured in accordance with EN 60034-1, EN 60335-1 and EN 60335-2-41 standards

SPECIFICATIONS

• Maximum flow: 40 L/min
• Maximum pressure: 400 kPa (approx.)
• Motor power (P2): 0.33 kW
• Motor type: 2-pole induction motor
• Motor speed: ≈2900 rpm
• Voltage: 230/400 V ±10% (three-phase)
• Liquid temperature: Up to 60°C
• Ambient temperature: Up to 40°C
• Maximum suction lift: 7 m
• Duty rating: Continuous duty (S3 60% for three-phase)
• Protection rating: IP54
• Insulation class: Class F
• Efficiency class: IE2
• Pump casing material: Cast iron GJL 200 EN 1561
• Casing cover material: Brass CW617N
• Impeller material: Brass CW617N
• Shaft material: Stainless steel 1.4104 (AISI 430F)
• Mechanical seal: Carbon – Ceramic – NBR
• Suction connection: 1" BSP
• Discharge connection: 1" BSP
• Weight: 4.7 kg

APPLICATIONS

• Pressure boosting from water distribution networks
• Small water transfer systems
• Cooling and air-conditioning equipment
• Circulation systems
• Compact machinery installations
• Domestic and light commercial pressure boosting

COMPARISON

• CT vs CTM
  • CT models are three-phase pumps (230/400V)
  • CTM models are single-phase pumps (230V) with an internal capacitor and thermal protection.
• 60 vs 61
  • Refers to the nominal impeller diameter used in the pump.
  • Performance curves are extremely similar, but the 61 version generally provides slightly higher head characteristics across the curve

OPERATING CONDITIONS

• Max Flow: 40 L/min
• Max Head: 400 kPa (40 m)
• Power: 0.33kW (single-phase)
• Liquid temperature: up to 60°C
• Ambient temperature: up to 40°C
• Suction lift: up to 7 m
• Continuous duty rated