ATTWOOD Automatic Float Switch / with housing

SVB item number: 75840 Manufacturer no.: 4201-7
This Attwood float switch can used to switch a bilge pump to fully automatic operation. The switch features a compact, low-profile design and can be mounted horizontally on any surface up to a 24° angle. The housing protects the switch from dirt particles and other debris interference. Voltage: 12 / 24 V. Product details
Recommended retail price: €39.34
only  €34.95
-11%
You save: €4.39
6 | in stock
pcs.
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Available variants

Automatic Float Switch / without housing
ATTWOOD Automatic Float Switch / without housing
€36.24
only €33.95
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Product data

  • SVB item number 75840
  • EAN 022697420176
  • Manufacturer no. 4201-7
  • Description ATTWOOD - Automatic float switch / with housing
  • Construction type Mechanical
  • Operating voltage 12 V, 24 V
  • Switch-on delay Yes
  • Switch-on level 50 mm
  • Switch-off level 10 mm
  • Protective housing Yes
  • With switch No
  • Max. load capacity 12 A
  • Height 73 mm
  • Width 99 mm
  • Length 134 mm
  • Hole Centers 73 mm
  • Cable length 900 mm
  • Colour Black
  • Material Plastic
  • Accessories for Pumps

Product details

Water can accumulate in the bilge from time to time for a variety of reasons, be it rain, a leaking valve or a through hull. In order to be able to pump out this water automatically, float switches are required.

This Attwood float switch can used to switch a bilge pump to fully automatic operation. The switch features a compact, low-profile design and can be mounted horizontally on any surface up to a 24° angle. An integrated switch activates the pump at a water level of 50mm and deactivates it when the water level falls below 10mm. The housing protects the switch from dirt particles and other debris interference. It also dampens bilge sloshing to reduce pump cycling.

Technical specifications

Power supply 12 / 24 V
Max. power consumption (amps) 12 A @ 12 V
6 A @ 24 V
Dimensions (h x w x d) 134 x 99 x 73 mm
Hole spacing 73 mm
Cable length 900 mm

Product safety

What other SVB customers have to say

100% real reviews

3 customer reviews

4.7 (out of 3 ratings)
3 Stars
(0)
2 Stars
(0)
1 Stars
(0)
100% recommend SVB
DMYTRO V.
by DMYTRO V. Flag of Germany 12/3/2025 Verified purchase Variant: 75847
Die Lieferung erfolgte pünktlich, die Qualität der Ware ist gut, ich habe den Wasserstandssensor installiert, alles funktioniert, im Moment bin ich mit allem zufrieden, wie es weitergeht, wird die Zeit zeigen.
Mit freundlichen Grüßen, SVB
Dmitri
Bernard S.
by Bernard S. Flag of France 8/10/2024 Verified purchase Variant: 75840
Switches reliably.
Reliable switching and switching off again when base is empty.
Easy S.
by Easy S. Flag of Germany 4/27/2025 Verified purchase Variant: 75847
Functional
Easy installation, works reliably, rather large space requirement for a small bilge well

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Comparison

Availability / Price
only €34 95
6 left in stock
only €33 95
8 left in stock
Item no.
75840
75847
Customer ratings
(3)
(3)
Description
ATTWOOD - Automatic float switch / with housing
ATTWOOD - Automatic float switch without housing
Width
99 mm
35 mm
Height
73 mm
99 mm
Hole Centers
73 mm
73 mm
Length
134 mm
108 mm
With switch
Operating voltage
12 V, 24 V
12 V, 24 V
Construction type
Mechanical
Mechanical
Material
Plastic
 
Colour
Black
Black
Cable length
900 mm
900 mm
Max. load capacity
12 A
12 A
Switch-on delay
Switch-on level
50 mm
50 mm
Switch-off level
10 mm
10 mm
Protective housing
Accessories for
Pumps
Pumps
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ATTWOOD Automatic Float Switch / with housing
View Ratings (3) Questions (0)