Name: Grundfos TPE3 125-160-S 400v 93338891
Brand: Grundfos
SKU: 93338891
Price: 8158.26 GBP
Availability: InStock

In stock

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Established 1975
Trusted by thousands of customers

Grundfos TPE3 125-160-S cast iron 400V single-head in-line pump

Single-stage, close-coupled in-line circulator with an IE5 permanent-magnet motor and integrated frequency converter. Speed varies continuously to match system demand, so the pump draws only the power the duty actually needs.

TPE3 is factory fitted with a combined differential-pressure and temperature sensor, so it runs closed-loop control straight out of the box — no separate transducer to buy or wire.

DN 125

Connection

5.5 kW

Motor

3 x 400V

Supply

IE5

Efficiency

Built-in ΔP + temp sensorAUTOADAPTFLOWADAPTHeat energy monitorTop-pull-out

Made to order. This size is not a standard stock item — contact us before ordering and we will confirm the current Grundfos lead time.

Full Description

More about this product

Full Description

Applications

Heating and district heating systems
Air conditioning and chilled water systems
Ground-source and air-source heat pump systems
Industrial process and cooling circuits
Domestic hot water and secondary circulation
Solar thermal systems

Specification

Model	TPE3 125-160-S
Grundfos type key	TPE3 125-160 S-A-F-A-BQQE-LWA
Configuration	Single head
Nominal connection	DN 125, DIN flanges to EN 1092-2
Rated motor power (P2)	5.5 kW
Supply voltage	3 x 400 V, 50 Hz
Motor	Permanent-magnet synchronous, fan-cooled, IE5 to IEC 60034-30-2
Speed control	Integrated frequency converter and PI controller
Sensor	Factory-fitted combined differential-pressure and temperature sensor
Pump housing	Cast iron EN-JL1040
Shaft seal	BQQE rubber bellows seal (SiC/SiC/EPDM) to EN 12756
Liquid temperature	-25 °C to +120 °C
Enclosure	IP55, insulation class F
Design	Top-pull-out, in-line

Key features

Built-in sensor

The combined differential-pressure and temperature sensor is fitted at the factory, so closed-loop control needs no extra transducer, cabling or set-up.

IE5 permanent-magnet motor

Exceeds the IE5 threshold of IEC 60034-30-2, with materially lower running cost than an equivalent fixed-speed induction pump.

Heat energy monitoring

Flow and temperature readings let the pump estimate heat energy delivered — useful for balancing, commissioning and spotting system faults.

Top-pull-out servicing

Motor, pump head and impeller lift out as one assembly while the housing stays in the pipework.

BMS ready

GENIbus and analogue/digital I/O as standard, with optional Grundfos CIM modules for BACnet, Modbus and other building protocols.

Grundfos GO

Commission, read status and change set points from a phone or tablet with the Grundfos GO app.

Control modes

AUTOADAPT	Default. The pump finds the lowest workable proportional-pressure curve for the system and keeps adjusting it.
FLOWADAPT	AUTOADAPT with a maximum flow limit — useful where flow must not exceed a design figure.
Proportional pressure	Head falls as flow falls. Suits radiator and two-pipe heating systems with thermostatic valves.
Constant pressure	Holds a fixed differential pressure regardless of flow. Suits underfloor heating and systems with low pipe losses.
Constant temperature	Controls speed to hold a set liquid temperature, e.g. domestic hot water return.
Constant curve	Fixed speed set from the control panel, Grundfos GO or an external signal.

Frequently asked questions

Do I need to buy a pressure sensor?

No. TPE3 pumps have a combined differential-pressure and temperature sensor fitted at the factory, so proportional-pressure, constant-pressure and AUTOADAPT control work without any extra parts.

What is the difference between TPE2 and TPE3?

Both use IE5 permanent-magnet motors with integrated speed control. TPE2 has no sensor and needs an external transducer for closed-loop control; TPE3 has the sensor built in and adds heat energy monitoring.

Is this the single-head or twin-head version?

Single head. The twin-head equivalent is the TPE3 D 125-160, which we list separately.

What supply does it need?

3 x 400 V, 50 Hz. This size is three-phase only — there is no single-phase version.

What is the lead time?

This size is not a standard stock item. Contact us before ordering and we will confirm the current lead time from Grundfos.

Delivery Information

Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.

Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).

Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.

Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.

Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.