Technical Parameter
Pressure Range:0.5-10 bar
Operating Temperature:-20°C to +70°C
Accuracy:±0.5% F.S.
Switch Type:SPDT
Electrical Rating:10A @ 250V AC, 16A @ 24V DC
Material:Stainless Steel
IP Rating:IP65/IP67
Dimensions:14.5mm x 30mm x 17mm
Weight:20g
Product Introduction
The ABB 3HAC021838-001 Precision Pressure Switch is engineered with precision and reliability, essential for the stringent requirements of modern industrial environments. Its compact size and durable stainless steel body make it suitable for harsh conditions without compromising on accuracy.
With an operating range from 0.5 to 10 bars, this switch provides reliable monitoring for a wide variety of applications, from hydraulic systems to air pressure management in factories. Its fast response time ensures immediate action when pressure levels exceed or fall below the set limits.
Featuring a single-pole double-throw (SPDT) switching mechanism, the ABB 3HAC021838-001 offers precise control over actuators and valves, enabling efficient operation and maintenance of critical processes. Its robust electrical rating supports continuous operation under demanding conditions.
Operated within a temperature range of -25°C to +85°C, this pressure switch ensures reliable performance throughout extreme environmental changes. Its compact design with dimensions of 45mm wide, 90mm long, and 20mm high makes it easy to integrate into existing systems without requiring extensive modifications.
Manufactured with a combination of a stainless steel body and a plastic enclosure, the ABB 3HAC021838-001 Pressure Switch is not only durable but also corrosion-resistant, ensuring longevity and minimal maintenance needs. This makes it an ideal choice for industries where operational uptime is critical.

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•Shipping Port: Xiamen
•Ship to you via Fedex/DHL/TNT/UPS/EMS
•Package: Original packing with cartons
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FAQ
Q: Do you provide a warranty for the goods?
A: Yes, we provide a warranty for all the goods from us.
Q: Could you provide technical support?
A: We’re in this field for more than 12 years. If there’s any problem, please contact us, and we’ll provide suggestions from our engineer to help you solve the problem.
Q: Do you keep goods in stock or only trade?
A: We have a large warehouse for goods. We keep lots of items in stock, so we can promise fast delivery.
Q: Are your goods new and original?
A: Yes, they are new and original.
What is a DCS?
A Distributed Control System (DCS) is a sophisticated, computer-based control system designed to automate, monitor, and manage complex industrial processes. It is widely used in large-scale industrial facilities such as refineries, power plants, chemical plants, and paper mills, where precision, reliability, and scalability are critical.
How Does a DCS Work?
A DCS is composed of several interconnected components that work seamlessly to ensure efficient process control. Here’s a breakdown of its key elements:
- Controllers:
These are the “brains” of the system. Controllers receive data from sensors, process it using pre-programmed logic, and send output signals to actuators to maintain optimal process conditions. - Sensors:
Sensors act as the “eyes and ears” of the system, measuring critical physical parameters such as temperature, pressure, flow rate, and level. This real-time data is essential for accurate control. - Actuators:
Actuators are the “muscles” of the system. They execute physical actions based on controller commands, such as opening/closing valves, starting/stopping motors, or adjusting dampers. - Operator Stations:
These serve as the human-machine interface (HMI), allowing operators to monitor the process, adjust setpoints, and troubleshoot issues. Modern DCS systems often feature intuitive graphical interfaces for ease of use. - Communication Network:
The backbone of the DCS, this network connects all components, enabling seamless data exchange and coordination. It ensures that every part of the system works in harmony, even across large industrial sites.
Why is a DCS Important?
- Centralized Control with Distributed Execution: A DCS allows for centralized monitoring while distributing control functions across multiple controllers, reducing the risk of system-wide failures.
- Scalability: It can easily expand to accommodate growing operational needs.
- Reliability: Redundant systems and fail-safes ensure continuous operation, even in critical environments.
- Efficiency: Optimizes processes, reduces waste, and improves overall productivity.













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