Float switches play a central role in automatic pump control and water level management systems. Their primary function is automatically switching the water pump on and off depending on the fluid level.
It’s an apparently simple task, but one that requires high precision.
A poorly performing float switch can lead to serious issues, including flooding or system downtime. For distributors and pump manufacturers, repeated failures can result in unexpected costs and even cause loss of trust from end users.
What makes a float switch truly reliable?
A reliable float switch must provide consistent performance over time and ensure the continuous operation of the pumping system—even in difficult conditions.
From research and development, to design and production, every aspect of a Mac3 float switch is precisely managed:
Research and Development
Each year, we invest approximately 10% of our EBIT into R&D. We have introduced new product variants such as the Key Green model, made entirely from recycled plastic, a solution that meets the growing demand for robust products made from secondary raw materials.
Practical, functional design
Every detail of our float switches is designed to simplify installation and daily use. Features include highly visible colors, technical solutions such as the dual-chamber, and certified versions for international markets—including those approved for drinking water applications.
Durable, high-quality materials
We carefully select high-grade plastic polymers and quality electrical components to ensure stable performance, even under harsh conditions.

In-house manufacturing with full traceability
All plastic components are produced in-house using proprietary molds and each float switch undergoes rigorous testing to ensure full compliance with Mac3’s strict quality standards. The quality check process includes tests for watertightness, mechanical function, and electrical operation. Each product undergoes an individual final testing, and only then we apply technical labels and proceed with packaging and shipping.

Mac3 Float Switches: Italian Quality in Every Detail
In 2024 alone, we produced 1.8 million float switches, supplying customers in over 90 countries. For our clients, reliability means peace of mind—knowing they’ve chosen a durable, high-performance product they can truly count on.
With a fully traceable production phase over every batch, we can offer fast, targeted support both pre- and after-sales, specialized technical assistance and full flexibility of product customization for pump manufacturers that wish to integrate components that ensure the continuous operation of their systems, precisely tailored to their specific requirements.
Distributors, on the other hand, benefit from offering a safe and reliable product, reducing the risk of complaints and returns. And installers find in Mac3 a solution that simplifies their work, facilitates monitoring, and ensures precise, long-lasting operation.
For our customers, reliability means peace of mind: a float switch that responds to the industry’s changing needs, ensures long-term efficiency, and delivers precise water pump activation or deactivation.
For over forty years, we’ve been designing and producing float switches at our facilities located in the heart of Italy, near Florence, precisely refining every detail.
Because at Mac3, quality means precision, efficiency, and operational continuity for those who choose our products.
Explore the full range of Mac3 float switches.
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