Name: Triton LR02 Rubber Float Switch with Inbuilt Weight 20m LR02-L20M
Brand: Triton
SKU: lr0220
Price: 124.26 GBP
Availability: InStock

Triton LR02 Rubber Float Switch with Inbuilt Weight 20m LR02-L20M

In stock

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Established 1975
Trusted by thousands of customers

The Triton LR02-L20M is Triton Controls’ best-selling float switch for sewage and wastewater. A tough Hypalon rubber float houses a sealed microswitch and steel roller ball, moulded to 20 m of 3-core CPE cable, with a built-in stabilising weight, so no separate counterweight is needed.

Its changeover (SPDT) contact switches a pump directly up to 15 A resistive at 250 V, and can be wired to fill or empty. Made in the UK by Triton Controls.

20 m

CPE cable

15 A

at 250 V resistive

70°C

max liquid temp

20 m

max submerged depth

Non-mercurySPDT changeoverBuilt-in weightHypalon floatCPE cableMade in the UK

Not for diesel, petrol or oils: use the Triton LR06. For ATEX zone 1 & 2 hazardous areas, use the Triton LR02-IS.

Full Description

More about this product

Full Description

Triton LR02 rubber float switch, 20 m

The Triton LR02 (LR02-L20M) has been Triton Controls’ best-selling float switch for over 20 years, and is the standard choice for sewage and wastewater level control. A sealed microswitch and steel roller ball sit inside a tough Hypalon (CSP) synthetic rubber float, moulded to 20 m of 3-core CPE cable. A rubber-coated stabilising weight is fixed to the cable about 120 mm from the float, so no separate counterweight is needed.

Its smooth, rounded shape resists build-up of solids and grease. As the level rises or falls, the changeover (SPDT) contact starts or stops a pump, or triggers an alarm. Wire one side to empty a sump or wet well, or the other side to fill a tank.

No mercury, no heavy metals: the LR02 replaced Triton’s mercury-tilt LR01 with a roller ball and microswitch.

Specifications

Part number	LR02-L20M
Cable length	20 m (±5%)
Switch type	SPDT changeover microswitch, steel roller ball operated (non-mercury)
Contact rating	250 V 15 A non-inductive; 250 V 10 A inductive (1.3 hp)
Float	Hypalon (CSP) synthetic rubber over sealed closed-cell foam
Cable	3-core CPE synthetic rubber: brown, blue, black
Stabilising weight	Built in, rubber coated, about 120 mm from the float
Float size	174 × 91 mm
Max liquid temperature	70°C
Max submerged depth	20 m
Compressive strength	482 kN/m² (70 lbf/in²)
Specific gravity range	0.8 to 1.3
Manufacturer	Triton Controls, made in Great Britain

Wiring

Leads used	Contact closes when	Typical use
Brown + Black	Float rises (tilts up past about 45°)	Emptying: pump starts on high level
Brown + Blue	Float falls (tilts down past about 45°)	Filling: pump or valve starts on low level; low-level / dry-run alarm

Brown is the common lead. Insulate whichever lead you don’t use. Single-phase pumps up to 10 A inductive can be switched directly. Larger or three-phase motors should be switched through a contactor or control panel.

Chemical resistance

Against	Rating
Water, salt water	Good
Vegetable & animal fats	Good
Dilute acids, alkalis, alcohols	Good
Sunlight, ozone, oxidation	Good
Lubricants	Fair
Diesel oil & petrol	Poor

Applications

Sewage & pumping stations

Duty, standby and high-level alarm control in foul water wet wells.

Sumps & drainage

Automatic emptying of cellar, basement and surface water sumps.

Fat-laden effluent

Rated good against vegetable and animal fats, so it suits kitchen and food waste lift stations.

Salt water

Rated good in salt water for marine and coastal installations.

Cable length options

Part number	Cable length
LR02-L05M	5 m
LR02-L10M	10 m
LR02-L15M	15 m
LR02-L20M (this listing)	20 m
LR02-L30M	30 m
LR02-L40M	40 m

Installation tips

Allow at least 330 mm of free movement so the float can tilt fully. Switching points are approximate.
In an enclosed vessel, support the cable; in an open or turbulent tank, clip it to the wall so the float cannot drift.
Where turbulence causes rapid on/off switching, use a maintaining (latching) circuit to protect the microswitch and the pump starter.

FAQs

Does the LR02 need a counterweight?

No. The stabilising weight is built into the cable about 120 mm from the float, so it is ready to hang straight into the sump.

Can one switch fill and empty a tank?

Yes. Use brown and black to empty (closes on rising level) or brown and blue to fill (closes on falling level).

Will it switch my pump directly?

Single-phase pumps up to 10 A inductive (about 1.3 hp) at 250 V, yes. Use a contactor or control panel for larger or three-phase pumps.

Can I use it in diesel or oil?

No. The LR02 is rated poor against diesel and petrol. Use the Triton LR06, which has a polyurethane cable made for oily liquids.

Is there a version for hazardous areas?

Yes. The Triton LR02-IS is ATEX certified for zones 1 and 2, wired through an intrinsically safe barrier.

Downloads

data sheet PDF
Download

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.