3" series
Grundfos SQE 1
3" submersible pumps with a built-in variable frequency drive
HydroCraft partnerGrundfos SQE 1 is a compact 3" multistage submersible pump with a built-in variable frequency drive (VFD) and a permanent-magnet motor. Unlike the standard SQ series, the SQE model maintains constant pressure in the system by automatically adjusting its speed — ideal for domestic water supply where a steady, comfortable flow is required. It works with the CU 301 controller, which allows the desired pressure to be set along with monitoring and protection. The body is polyamide and AISI 304 stainless steel, and the motor is single-phase with a permanent-magnet rotor.
- series
- 9
- models in the tables
- 9
Price and delivery time on request. Working hours: Mon–Fri, 8:30–17:00
Features
What Grundfos SQE 1 offers
- Built-in variable frequency drive (VFD) for constant pressure
- Floating impellers with tungsten carbide/ceramic bearings
- Built-in permanent-magnet motor (MSE3) for high efficiency
- Soft start
- Dry-running protection
- Over-voltage and under-voltage protection
- Overload and overheating protection
- Compatible with the Grundfos CU 301 controller
- Compact 3" design (Ø74 mm, min. borehole Ø76 mm)
- IP68 protection, insulation class F
Applications
Where it is used
- Domestic water supply at constant pressure
- Systems with variable water demand
- Transferring liquids in tanks
- Irrigation systems
Technical data
Grundfos SQE 1 specifications
Series
| Series | Flow rate | Stages | Power |
|---|---|---|---|
| SQE 1-35 | 1 m³/h | – | 0.70 kW |
| SQE 1-50 | 1 m³/h | – | 0.70 kW |
| SQE 1-65 | 1 m³/h | – | 0.70 kW |
| SQE 1-80 | 1 m³/h | – | 1.15 kW |
| SQE 1-95 | 1 m³/h | – | 1.15 kW |
| SQE 1-110 | 1 m³/h | – | 1.15 kW |
| SQE 1-125 | 1 m³/h | – | 1.68 kW |
| SQE 1-140 | 1 m³/h | – | 1.68 kW |
| SQE 1-155 | 1 m³/h | – | 1.85 kW |
Performance
SQE 1 — 1~230V 50Hz
9 models| Parameters | Q (m³/h) → H (m) | |||||
|---|---|---|---|---|---|---|
| Model | HP | kW | A 1~230V | Ø mm | Connection | 1 |
| SQE 1-35 | 0.94 | 0.70 | 5.2 | 74 | Rp 1 1/4" | 34 |
| SQE 1-50 | 0.94 | 0.70 | 5.2 | 74 | Rp 1 1/4" | 53 |
| SQE 1-65 | 0.94 | 0.70 | 5.2 | 74 | Rp 1 1/4" | 72 |
| SQE 1-80 | 1.54 | 1.15 | 8.4 | 74 | Rp 1 1/4" | 91 |
| SQE 1-95 | 1.54 | 1.15 | 8.4 | 74 | Rp 1 1/4" | 111 |
| SQE 1-110 | 1.54 | 1.15 | 8.4 | 74 | Rp 1 1/4" | 127 |
| SQE 1-125 | 2.25 | 1.68 | 11.2 | 74 | Rp 1 1/4" | 135 |
| SQE 1-140 | 2.25 | 1.68 | 11.2 | 74 | Rp 1 1/4" | 143 |
| SQE 1-155 | 2.48 | 1.85 | 12.3 | 74 | Rp 1 1/4" | 151 |
H (m) is the head in metres at the corresponding flow rate Q (m³/h). For full performance curves, get in touch.
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Enquiry about Grundfos SQE 1
Tell us about the site and we will confirm the model, the price and the delivery time. Installation and service are done by our own teams.
- Help choosingValchan Georgiev, 0888 101 280
- Phone0886 834 7170888 654 040
- Emailoffice@hydrocraft.bg
- Working hoursMon–Fri, 8:30–17:00
- OfficeSofia, Orlandovtsi, 1 Mara Buneva St.