B71A pressure switch 1.5–4.5 bar – two-pole pressure switch for pumps, G 1/4" F – SALE
Code: SI0B71AProduct detailed description
The B71A pressure switch (code SI0B71A) provides direct control of the electric motors of pumps, compressors and domestic or industrial pressure vessels. It is suitable for liquids and gases that are chemically compatible with its internal diaphragm. The contacts open as pressure rises, so the pump stops when the set pressure is reached and restarts when it drops.
Technical data
- setting range 1.5–4.5 bar, factory setting 1.4–2.8 bar
- differential 1.0–2.1 bar at minimum and 1.2–2.3 bar at maximum setting, 2.3 bar at most
- two-pole switch, silver alloy contacts, Ui 415 V~, Ith 15 A, AC-1 up to 12 A, AC-3 up to 3 A
- G 1/4" female threaded connection, protection rating IP20
- max. fluid temperature 70 °C, body temperature −15 to +60 °C, weight 0.35 kg
- impact-resistant thermoplastic cover, steel metal parts, earth terminal, two cable glands, compliant with EN 60947-5-1
Setting and installation
The switch is mounted directly on the pipe. Tightening the adjusting nut raises the cut-in pressure, tightening the differential nut raises the cut-out pressure. Without a contactor it controls motors up to 3 A. Installation and connection of the electrical parts must be carried out only by a person with electrical qualifications.
Technical data
| Code | SI0B71A |
| Brand | IVAR |
| Type | DAB.PRISLUSENSTVI |
| Model | B71A |
| Setting range | 1.5–4.5 bar |
| Factory setting | 1.4–2.8 bar |
| Differential | 1.0–2.1 / 1.2–2.3 bar |
| Connection | G 1/4" female thread |
| Contacts | two-pole, Ith 15 A, AC-3 up to 3 A |
| Protection rating | IP20 |
| Max. fluid temperature | 70 °C |
| Weight | 0.35 kg |
Frequently asked questions
What pressure can be set on the B71A switch?
The cut-in pressure in the range of 1.5–4.5 bar. From the factory the switch is set to 1.4–2.8 bar.
Can the switch control the pump motor directly?
Yes, the two-pole contact controls electric motors up to 3 A (AC-3) without a contactor. Motors with a higher current need a contactor.
How are the cut-in and cut-out pressures changed?
Tightening the adjusting nut raises the cut-in pressure, tightening the differential nut raises the cut-out pressure. The setting should be done by a professional.
Additional parameters
| Category: | DAB. Pressure Switches |
|---|---|
| Warranty: | 2 years |
| Weight: | 0.35 kg |
| Pump type: | accessories / set |
| Code: | SI0B71A |
| Brand: | IVAR |
| Type: | DAB.PRISLUSENSTVI |
| Model: | B71A |
| Setting range: | 1.5–4.5 bar |
| Factory setting: | 1.4–2.8 bar |
| Differential: | 1.0–2.1 / 1.2–2.3 bar |
| Connection: | G 1/4" female thread |
| Contacts: | two-pole, Ith 15 A, AC-3 up to 3 A |
| Protection rating: | IP20 |
| Max. fluid temperature: | 70 °C |
| Weight: | 0.35 kg |
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IVAR designs, develops and manufactures highly energy-efficient heating and plumbing systems. We have over 10,000 catalogue items - mass-produced products and unique items - in addition to customised systems and combinations of complex products. And it’s all “Made in Italy”.
Vision
To make life easier for our clients, our clients' customers and our employees, thanks to our ability to be constantly innovative.
Mission
To design and manufacture advanced hydronic solutions that reduce installation complexity and energy consumption.
“Made in Italy” adds value
IVAR has been producing heating and plumbing system components since 1985: valves for heating bodies, direct heat metering modules, heat cost allocators, pipes and fittings, substations for heating systems, distribution manifolds, radiant panel systems, and components for solar and geothermal systems. And it’s all “Made in Italy”.
Over 200 people are employed at our manufacturing facilities in Prevalle (in northern Italy’s Brescia province). The site has been designed to streamline our many production and operational stages.
The Italian headquarters also acts as a hub for the wider IVAR Group, set up with the goal of distributing products beyond Italy’s borders. The group now has 11 branches, in Australia, Belgium, China, Germany, the United Kingdom, the Czech Republic, Romania, Slovakia, Spain, the United States and Tunisia.
Know How
Research, development and numerous laboratory tests guarantee that our clients’ requests can be translated into new high-efficiency products.
The stages required for production take place internally, beginning with hot forming, which is carried out at our subsidiary Valmon Stampati. Our continuous implementation of projects under the Industry 4.0 initiative also allows us to take full advantage of new releases in technology and IT to improve our manufacturing efficiency.
As a company, IVAR is constantly evolving. Every day, we invest in strengthening our products, in improving our production processes and in attaining new patents and certifications.