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ISO
9001
CERTIFIED
RSF20 Series
Low level switch for boiling water
Cynergy3 Components Ltd.
7 Cobham Road
Ferndown Industrial Estate
Wimborne, Dorset BH21 7PE
Telephone +44 (0) 1202 897969
Email:sales@cynergy3.com
The RSF20 is designed to eliminate the
problems associated with limescale build
up around the pivot point on a
conventional float switch.
This particular series is primarily for
applications where a low level condition
has to be monitored, in a system where the
liquid is usually maintained at a high
level, or where a wider differential is
required between the opening and closing
levels.
The extended drop float actuator allows the
switch housing and float pivots to be
located above the surface of the liquid,
while the excess buoyancy of the float
chamber itself ensures that it floats, even
when scale builds up on the float chamber.
Typical applications include wall kettles
and hot vending machines.
The switch is closed when the level is
low(float down) and opens as the liquid
level rises.
Version are available with either flying
leads or M12 circular connector
Cables are available for use with M12
connection versions.
Mechanical Dimensions
WRAS approved for use in hot & cold water
Custom versions can be made for particular applications. Please contact Cynergy3 with your requirements.
Pivot out of liquid
Low level switch position
Many variants are UL recognised
components File No. E171218
Technical Specification
Material Polyphenylene
Sulphide (PPS)
Colour Grey
Temp. Range C -10 / +120 *°
°F +14 / +248 *
Minimum liquid SG 00.8
Must close level (SG=1) 9mm
Must open level (SG=1) 24mm
* Maximum temperature requires ETFE cable to be specified.
Electrical Specification 25W (Y code) 100W (H code)
Contact Form N/C N/C
Switching Power Max VA 25 100
Switching Voltage AC Max V 240 300
Switching Voltage DC Max V 120 300
Switching Current Max A 0.6 1
All ratings are for resistive load only.
Standard Parts Material Approvals Max Power Leadouts Gasket
RSF26H050TG PPS WRAS & UL 100VA 50cm ETFE 19/0.2 Viton
RSF26H100RF PPS WRAS & UL 100VA 1 metre PVC 16/0.2 Nitrile
RSF26Y050TG PPS WRAS & UL 25VA 50cm ETFE 19/0.2 Viton
RSF26Y100RF PPS WRAS & UL 25VA 1 metre PVC 16/0.2 Nitrile
RSF26HF PPS WRAS & UL 100VA NitrileP M12 connector
RSF26Y PPS WRAS & UL 25VAFP M12 connector Nitrile
All dimensions are in millimetres (inches)
166.0 (6.5”) Nominal
148.0 (5.8”) Nominal
Fully Extended
Gasket Seal
O 24mm (0.9”)
Switch
closed
6° min.
16.5mm (0.65") dia. Hole in Tank
Switch Open
30° Max.
M16 x 2.0 Supplied with Nylon Hex Half Nut
8mm (0.3") max tank wall
Must close level
Must open level
Mounting Surface Internal
33.5mm (1.3”)
35.0 for M12 connection version
Flying lead or M12 connector
M12 connection version
Switch on pins 1 & 2
12
3
4
