GRUNDFOS DATA BOOKLET - SQ, SQ-N, SQE, SQE-N - Submersible pumps 50/60 Hz

Sep 26, 2026

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GRUNDFOS DATA BOOKLET provides an overview of SQ, SQ-N, SQE, and SQE-N submersible pumps for 50/60 Hz operation. It covers general description, performance range, pump and motor range, pipe connections, type key, pumped liquids, and operating conditions. The booklet details key features such as dry-running protection, high pump and motor efficiency, wear resistance, upthrust protection, and overload/overtemperature safety, plus SQE variable speed and electronic control. It also includes application examples, control units CU 300/CU 301 communication, pump selection guidance, performance curves, technical data, accessories, and order data.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages60

Reading Time2 h 31 min

AccessFree to download

1. General description

Performance range

SQ submersible pumps

Pump and motor range

Pipe connection

Type key

Pumped liquids

Operating conditions

2. Features and benefits

Dry-running protection

High pump efficiency

High motor efficiency

Wear resistance

Protection against upthrust

Excellent starting capabilities

Overvoltage and undervoltage protection

Overload protection

Overtemperature protection

Reliability

Variable speed

Installation

Service

3. Application examples

SQ with pressure switch and pressure tank

SQ with Pressure Manager (with/without pressure tank)

Constant-pressure control with the CU 301, residential water supply

Constant-pressure control with the CU 301, irrigation

Maintaining a constant water table

Emptying or filling a tank

Pumping from one tank to another

Workshop setting of operating parameters

Manual speed control of the SQE (sampling)

Replacement in existing installation

4. Communication, CU 301

CU 301 control unit

R100 menu structure for the CU 301

R100 menus for the CU 301

5. Communication, CU 300

CU 300 control unit

R100 menu structure for the CU 300

R100 menus for the CU 300

Alarm indication

Benefits of the CU 300 and R100

6. Pump selection

Determining head and flow

Pump sizing

Variable speed

Curve conditions

Selecting the right pump for the SQE constant-pressure system

Selection of pressure tank

7. Performance curves and technical data

SQ 1, SQ 1-N, SQE 1, SQE 1-N

SQ 2, SQ 2-N, SQE 2, SQE 2-N

SQ 3, SQ 3-N, SQE 3, SQE 3-N

SQ 5, SQ 5-N, SQE 5, SQE 5-N

SQ 7, SQ 7-N, SQE 7, SQE 7-N

8. Technical data

SQ and SQE pumps

CU 300 and CU 301 control units

Material specification, pump

Material specification, motor

Wiring diagrams

Electrical connection of CU 300

Electrical connection of CU 301

9. Accessories

Constant-pressure packages incl. pump

Constant-pressure package excl. pump

CU 301

Pressure sensor for CU 301

CU 300

Submersible drop cable

Cable termination kit, type KM

Cable clips

Pressure tank

Zinc anodes

Pressure gauge

Straining wire

Wire clamp

Flow sleeve

Pressure Manager

R100 remote control

SPP 1 potentiometer

SQE Speed Calculation program

Sensors

10. Order data

Complete units, 1 x 200-240 V, 1.5 m cable

Submersible drop cables

SQ and SQE packages

11. Further product documentation

WebCAPS

WinCAPS

GRUNDFOS DATA BOOKLET SQ, SQ-N, SQE, SQE-N Submersible pumps 50/60 Hz Table of contents 1. General description 3 Performance range 3 SQ submersible pumps 4 Pump and motor range 4 Pipe connection 4 Type key 4 Pumped liquids 4 Operating conditions 4 2. Features and benefits 5 Dry-running protection 5 High pump efficiency 5 High motor efficiency 5 Wear resistance 5 Protection against upthrust 5 Excellent starting capabilities 5 Overvoltage and undervoltage protection 5 Overload protection 5 Overtemperature protection 6 Reliability 6 Variable speed 6 Installation 6 Service 6 3. Application examples 7 SQ with pressure switch and pressure tank 7 SQ with Pressure Manager (with/without pressure tank) 8 Constant-pressure control with the CU 301, residential water supply 9 Constant-pressure control with the CU 301, irrigation 10 Maintaining a constant water table 11 Emptying or filling a tank 12 Pumping from one tank to another 13 Workshop setting of operating parameters 14 Manual speed control of the SQE (sampling) 15 Replacement in existing installation 16 4. Communication, CU 301 17 CU 301 control unit 17 R100 menu structure for the CU 301 18 R100 menus for the CU 301 19 5. Communication, CU 300 20 CU 300 control unit 20 R100 menu structure for the CU 300 21 R100 menus for the CU 300 22 Alarm indication 24 Benefits of the CU 300 and R100 24 6. Pump selection 25 Determining head and flow 25 Pump sizing 27 Variable speed 28 Curve conditions 28 Selecting the right pump for the SQEconstant-pressure system 29 Selection of pressure tank 30 7. Performance curves and technical data 32 SQ 1, SQ 1-N, SQE 1, SQE 1-N 32 SQ 2, SQ 2-N, SQE 2, SQE 2-N 34 SQ 3, SQ 3-N, SQE 3, SQE 3-N 36 SQ 5, SQ 5-N, SQE 5, SQE 5-N 38 SQ 7, SQ 7-N, SQE 7, SQE 7-N 40 8. Technical data 42 SQ and SQE pumps 42 CU 300 and CU 301 control units 42 Material specification, pump 43 Material specification, motor 43 Wiring diagrams 44 Electrical connection of CU 300 44 Electrical connection of CU 301 45 9. Accessories 46 Constant-pressure packages incl. pump 46 Constant-pressure package excl. pump 46 CU 301 46 Pressure sensor for CU 301 46 CU 300 46 Submersible drop cable 47 Cable termination kit, type KM 47 Cable clips 47 Pressure tank 47 Zinc anodes 48 Pressure gauge 48 Straining wire 48 Wire clamp 48 Flow sleeve 48 Pressure Manager 49 R100 remote control 49 SPP 1 potentiometer 49 SQE Speed Calculation program 49 Sensors 50 10. Order data 51 Complete units, 1 x 200-240 V, 1.5 m cable 51 Submersible drop cables 53 SQ and SQE packages 54 11. Further product documentation 55 WebCAPS 55 WinCAPS 56 SQ, SQ-N, SQE, SQE-N 1 1. General description Performance range p [kPa] 2000~~ ~~ 1000 900 800 700 600 500 400 300 200 100 | H
[m]
200 | | | | | | | | | | | | | | | | S SQ | Q-N | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | | | | | | | | | | SQESQE ISO 9906 | -N Annex A | | 150
100~~ ~~ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 80 | | | | | | | | | | | | | | | | | | | 60 | SQ 1 | | | SQ 2 | | | SQ | 3 | | |
SQ 5 | | | | | | | | 40 | | | | | | | | | | | | | | | | | | | 30 | | | | | | | | | | | | | | | | | | | 20 | | | | | | | | | | | | | | |
SQ 7 | | | | 15 | | | | | | | | | | | | | | | | | | | 10 | | | | | | | | | | | | | | | | | | 0 1 2 3 4 5 6 7 8 Q [m³/h] 0.0 0.5 1.0 1.5 2.0 2.5 Q [l/s] General description TM02 9976 4104 Fig. 1 Performance range, SQ/SQ-N/SQE/SQE-N 1 SQ, SQ-N, SQE, SQE-N General description

FAQs

What are the main models covered in the booklet?

The booklet covers SQ, SQ-N, SQE, and SQE-N submersible pumps, intended for 50/60 Hz operation.

Which features are highlighted for SQ pumps versus SQE pumps?

SQ pumps emphasize safety and efficiency features such as dry-running protection, high pump/motor efficiency, wear resistance, upthrust protection, overload and overtemperature protection, and soft starter. SQE pumps additionally provide variable speed and electronic control/communication.

How do the CU 300 and CU 301 units relate to SQE pump operation?

The SQE pump can operate without the CU 300 or CU 301, but it will not offer all features in that case. CU 300 and CU 301 provide full control, with CU 301 specifically developed for applications requiring constant pressure.

Sep 26, 2026

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