Name: Triton LR03 PVC Float Switch 40m LR03-L40M-PVC
Brand: Triton
SKU: lr0340
Price: 143.08 GBP
Availability: InStock

Triton LR03 PVC Float Switch 40m LR03-L40M-PVC

In stock

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Established 1975
Trusted by thousands of customers

The Triton LR03-L40M-PVC is Triton Controls’ economical paddle float switch for clean and grey water: rainwater tanks, irrigation, sumps and level alarms. A sealed polypropylene float houses a steel roller ball and microswitch, moulded to 40 m of 3-core PVC cable.

Its changeover (SPDT) contact switches a pump directly up to 15 A resistive at 240 V, and can be wired to fill or empty a tank. Made in the UK by Triton Controls.

40 m

PVC cable

15 A

at 240 V resistive

IP68

fully submersible

20 m

max submerged depth

Non-mercurySPDT changeoverFill or emptyPolypropylene floatPVC cableMade in the UK

Needs tethering or the LR03-W counterweight to switch reliably. For sewage use the LR02, for diesel the LR06, and for drinking water the WRAS-approved LR07.

Full Description

More about this product

Full Description

Triton LR03 PVC float switch, 40 m

The Triton LR03 (LR03-L40M-PVC) is Triton Controls’ economical paddle float switch for clean and grey water. A sealed polypropylene float houses a steel roller ball and microswitch, moulded to 40 m of 3-core PVC cable, the low-cost cable choice for water-based liquids.

As the level rises or falls, the changeover (SPDT) contact starts or stops a pump, opens a valve or raises an alarm. Wire one side to empty a tank, or the other side to fill it. Integrated hysteresis helps stop nuisance switching from ripples.

Tether or weight it: the LR03 must be tethered or fitted with the LR03-W counterweight to operate correctly.

Specifications

Part number	LR03-L40M-PVC
Cable length	40 m (±5%)
Switch type	SPDT changeover microswitch, steel roller ball operated (non-mercury)
Contact rating	240 V AC 15 A non-inductive; 240 V AC 10 A inductive (1.3 hp); 125 V DC 0.6 A; 240 V DC 0.3 A
Float	Polypropylene paddle, fully sealed
Cable	3-core PVC: brown, blue, black
Float size	103 × 81 × 40 mm
Temperature	0°C (not frozen) to 70°C
Max submerged depth	20 m
IP rating	IP68
Compressive strength	482 kN/m²
Specific gravity range	0.9 to 1.3
Counterweight	Optional LR03-W (or tether the cable)
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.

Applications

Rainwater harvesting

Pump control and top-up switching in rainwater tanks.

Irrigation & agriculture

Fill and empty control of irrigation and livestock tanks.

Sumps & tank wells

Automatic emptying of clean and grey water sumps.

Level alarms

High or low-level signal to an alarm panel or controller.

Cable length options

Part number	Cable length
LR03-L05M-PVC	5 m
LR03-L10M-PVC	10 m
LR03-L15M-PVC	15 m
LR03-L20M-PVC	20 m
LR03-L30M-PVC	30 m
LR03-L40M-PVC (this listing)	40 m

Installation tips

Fit the LR03-W counterweight on the cable at the point you want the float to pivot, or tether the cable securely.
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

Do I need the counterweight?

The LR03 must be tethered or weighted to switch correctly. The LR03-W counterweight is the simplest way and sets the switching level.

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), yes. Use a contactor or control panel for larger or three-phase pumps.

Can I use it in sewage?

For raw sewage the Triton LR02 is the better choice: its rubber float and built-in weight resist build-up and suit foul water.

Can I use it in diesel or drinking water?

No. Use the Triton LR06 for diesel and oily water, or the WRAS-approved LR07 for drinking water.

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.