NR, NR4
In-line pumps
FLOW
2 / 110
mc / h
HEAD
2 / 39
m
POWER
0.25 / 7.5
kW
, 
, 
, 
Execution
Close-coupled, single-impeller, centrifugal pumps; electricmotor with extended shaft directly connected to the pump.
NR, NR4 series: Single head electropumps.
NRD, NRD4: Twin head pump with built-in automatic switching valve. The two head can operate singularly or in parallel.
Pump casing with suction and delivery connections with the same diameter and on the same axis (in-line).
Version with frequency converter (on request)
Applications
For clean liquids without abrasives, which are non-aggressive for the pump materials ( solids content up to 0.2%).
For heating, air-conditioning, cooling and circulation plants.
For civil and industrial applications.
When low noise operation is required (n ≈ 1450 rpm).
Operating conditions
Liquid temperature from -10 °C to +90 °C.
Ambient temperature up to 40° C.
Total suction lift up to 7 m.
Maximum permissible working pressure up to 10 bar.
Continuous duty.
Motor
2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
NR(D): three-phase 230/400 V ± 10% up to 3 kW;
400/690 V ± 10% from 4 to 18,5 kW.
NRM: single-phase 230 V ± 10%.
4-pole induction motor, 50 Hz (n ≈ 1450 rpm).
NR4: three-phase 230/400 V ± 10% up to 3 kW;
400/690 V ± 10% for 4 kW.
Insulation class F.
Protection IP 54.
Motor suitable for operation with frequency converter from 0,37 kW for NR4 and from 1,1 kW for NR(D).
IE3 efficiency class for three-phase motors (IE2 up to 0,65 kW).
Constructed in accordance with EN 60034-1; EN 60034-30-1. EN 60335-1, EN 60335-2-41.
Watch the videos
Case History
I am raw html block.
Click edit button to change this html
Related products
 NCE EIEnergy saving Circulating Pumps with frequency converter FLOW0.1 / 4.2mc / hHEAD0.2 / 6.8mPOWER0.003 / 0.056kW |
 NCE ELEnergy saving circulating pumps for solar systems with frequency converter FLOW0.1 / 4.2mc / hHEAD0.2 / 6.8mPOWER0.003 / 0.056kW |
 NCE ESHigh efficiency energy circulating pumps for sanitary hot water FLOW0.1 / 3.3mc / hHEAD0.2 / 3.8mPOWER0.0045 / 0.044kW |
 NCE HEnergy saving Circulating Pumps with frequency converter FLOW0.1 / 10.5mc / hHEAD0.1 / 12mPOWER0.01 / 0.20kW |
 NCE HQ FEnergy saving twin circulating pumps with flanges FLOW1 / 48mc / hHEAD0.1 / 17mPOWER0.015 / 1.26kW |
 NCE PSHigh efficiency energy circulating pumps for sanitary hot water FLOW0.2 / 2.6mc / hHEAD0.4 / 6mPOWER0.01 / 0.045kW |
 NCS3Circulating pumps for sanitary hot water FLOW0.5 / 4mc / hHEAD0.25 / 6.5mPOWER0.04 / 0.122kW |
.png){kind=small}
