Wilo TOP-S 25/7 Replacement Head - Single Phase

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£374.00 RRP £314.40 £262.00
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Replacement unit to repair a Wilo Top-S or Top-SD pump. The unit replaces the motor and terminal box on the existing pump base. Replacement body O-ring included. Existing bolts should be reused to reassemble the unit.

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Please ensure Top-S replacement head is suitable for your model of pump. Replacement heads cannot be returned if they have been attempted to be fitted. If unsure please contact 0800 008 6405.

Can be used for hot-water heating systems of all kinds, industrial circulation systems, air-conditioning systems and closed cooling circuits.

Maintenance-free glandless circulation pump with threaded or flange connection, pre-selectable speed stages for power adjustment.


  • Pump
  • Thermal insulation
  • Including seals for threaded connection
  • Washers for flange screws (for nominal connection diameters DN 40 - DN 65)
  • Installation and operating instructions


  • Direction of rotation signal lamp for displaying the correct sense of rotation (only with 3~)
  • Manual power adjustment with 3 speed stages
  • Pump housing with cataphoretic coating (KTL) protects against corrosion due to condensation formation

Technical data

  • Permitted temperature range -20 °C to +130 °C, for short periods (2 h) to +140 °C (TOP-S 25/13, 80/15, 80/20: -20 °C to +110 °C)
  • Mains connection:
    • 1~230 V, 50 Hz (depending on type)
    • 3~230 V, 50 Hz (with optional switching plug)
    • 3~400 V, 50 Hz
  • Protection class IP X4D
  • Screwed connection or flange connection (depending on type) Rp 1 to DN 100
  • Max. operating pressure of standard version: 6/10 bar or 6 bar (special version: 10 bar)


  • Pump housing: Grey cast iron
  • Impeller: Plastic
  • Shaft: stainless steel
  • Bearing: Carbon, metal impregnated


Glandless circulation pump with screwed connection or flange connection.


Hot-water heating systems of all kinds, industrial circulation systems, air-conditioning systems and closed cooling circuits


Operating modes

  •  Speed-stage switching


Manual functions

  • Setting the speed stages: 3 speed stages (2 speed stages for 1~ pumps with P2 ≥ 350 W)


Automatic functions

  • Internal protection against non-approved high winding temperatures (only for pumps for which P2 ≤180 W)


Signal and display functions

  • Thermal winding contact (WSK, potential-free NC contact) only for pumps for which P2 ≥180 W) for full motor protection in all speed levels with optional tripping unit SK 602N/SK 622N
  • Direction of rotation control light (only for 3~pumps )
  • Display of selected speed stage


Dual pump management (twin-head pump or 2 x single pumps)

  • Main/standby operation or parallel operation (for automatic fault-actuated switchover/time-dependent pump cycling, a corresponding switchgear must be provided on-site)



  • For flange-end pumps: Flange versions
    • Standard version for DN 40 to DN 65 pumps: PN 6/10 combination flange (PN 16 flange according to EN 1092-2) for PN 6 and PN 16 counter flanges,
    • Standard version for DN 80/DN 100 pumps: PN 6 flange (designed for PN 16 according to EN 1092-2) for PN 6 counter flange
  • Cable inlet possible from both sides (only for 1~pumps and 3~pumps with P2≥180 W)
  • Thermal insulation as standard for heating applications

Type key


TOP‐S 40/10


Standard pump (screw-end pump or flange-end pump)


Nominal connection diameter


Nominal delivery head [m] at Q = 0 m3/ h

More Information
Price £262.00
Manufacturer Wilo
Guarantee 1 year guarantee
Dimensions L221 x H180 x W160
Bars 10 bar
Impeller Type Single
Electrical supply 230V
AC Power Single Phase
Pump Type Spares
Switch None
Duty Type Commercial
Connection Size N/A
Manufacturers Part Number 2048334

Delivery and returns

  • Next Day Delivery

    Free Delivery

    On orders to UK Mainland Over £50 ex VAT*

  • Next Day Delivery

    Next Day Delivery

    Available on 1000's of products*

  • Weekend Delivery

    Weekend Delivery

    Available at extra charge to UK Mainland*

  • Easy Returns

    Easy Returns

    Warranty and Returns Contact: customerservices@pumpsalesdirect.co.uk


Pump Sales Direct (PSD) offers a free standard delivery service (2-3 working days) to mainland UK*. The free standard delivery service relates to all pumps on our website and also individually purchased spares or accessories over the value of £50 (before VAT). Individual spares or accessories purchased under £50 will incur a £6.95 delivery charge.

PSD also offers a next day delivery service at a charge of £12.50*, provided we receive your order before 3:30pm Monday to Friday (excludes Weekends and Bank Holidays).

*Excludes UK Islands, Republic of Ireland, Northern Ireland and Scottish Highlands.

UK Delivery Charge Options:-

Standard Delivery (2-3 working days)* - FREE

Next Working Day Delivery (on orders placed before 3:30pm)* - £12.50

Next Working Day Delivery before 10.30 am (on orders placed before 3:30pm)* - £25.00

Next Working Day Delivery before 12.00pm (on orders placed before 3:30pm)* - £15.00

Saturday AM Delivery before 12.00pm*- £35.00

Scottish Highlands Standard Delivery - £25.50

UK Islands & Republic of Ireland Standard Delivery - £60.00

*Excludes UK Islands, Republic of Ireland, Northern Ireland and Scottish Highlands.

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