RS PRO Vertical Nitrile Rubber Float Switch LLF50 & LLF60 Series 1 m Cable NO/NC 240V AC Max, 120V DC Max 191-9489

The RS PRO 191-9489 Vertical Nitrile Rubber (NBR) Float Switch from the LLF50 & LLF60 Series is a reliable industrial sensor designed for precise liquid level detection. Equipped with a 1 meter cable and a sensitive float, this switch is specifically engineered for applications where low liquid levels require quick and reliable response. The large diameter Buna float enables operation in specific gravity conditions as low as 0.45 and can function in minimum liquid depths of just 10 mm.

This float switch is suitable for both AC and DC circuits, supporting maximum voltages of 240V AC and 120V DC, and provides a NO/NC (Normally Open/Normally Closed) output for versatile control system interfaces. The device is constructed with a nylon stem and Buna float, while a Nitrile Rubber gasket ensures secure mounting and chemical resistance. Its housings are robust for operational endurance in challenging environments including drip tanks and hatch alarms, along with broader industrial use cases.

The operating temperature range of -20°C to 75°C allows deployment in environments with variable temperature conditions, and the cable leadout (100 cm 2-core PVC, 7/0.2) facilitates streamlined installation. The switch is engineered not just for industrial tanks but for any application where sensitive liquid detection is demanded, supporting automation and safety across numerous sectors.

As part of the LLF50 & LLF60 Series, this float switch is recognized for its high sensitivity, robust chemical resistance, and reliable vertical mounting configuration. It holds compliance with standards such as ANSI/ESD S20.20:2014 and BS EN 61340-5-1:2007, further underscoring operational reliability. The switch is not certified for hazardous area use as indicated by the evidence.

Vertical mounting float switch solution with Nitrile Rubber gasket. Wide compatibility for both AC (up to 240V) and DC (up to 120V) circuits. High chemical and temperature resistance due to quality materials. Precise liquid level detection in minimal liquid depths.

Flexible NO/NC output supports diverse control and monitoring applications. Ease of installation with supplied 1 m cable (2-core PVC). Designed for use in industrial tanks, alarms and other sensitive liquid detection scenarios.

Industrial and laboratory applications include process tanks, water treatment, HVAC systems, manufacturing, and commercial automation that demand reliable liquid monitoring. Explore more industrial sensors, Float Switches, and RS PRO LLF50 & LLF60 Series solutions in the Electronics & Electricals category on EnvMart.