Specification
Mechanical Pressure Switch NT11
Product Overview
The Mechanical Pressure Switch NT11 adopts a precision spring and built-in piston structure to provide reliable pressure monitoring and switching for demanding industrial applications.
When system pressure changes, the spring expands or contracts accordingly. Once the pressure reaches the preset switching point, the internal mechanical mechanism is activated and outputs a switching signal for system control.
The NT11 utilizes a piston-type pressure sensing structure, consisting of a piston, sealing ring, and piston cylinder, enabling the switch to withstand system pressures up to 30 MPa while maintaining stable and reliable performance.
The housing is available in galvanized steel or 304 stainless steel, while the pressure-sensitive sealing components are manufactured using high-quality rubber imported from Germany to ensure excellent durability and sealing performance.
For special application requirements, the NT11 can be supplied with protective covers and sealed electrical connectors as a complete factory-installed assembly. This configuration is commonly used on construction machinery such as excavators operating in harsh environments.
The Mechanical Pressure Switch NT11 has successfully replaced imported products and is widely used in marine equipment, railway systems, engineering machinery, hydraulic equipment, and industrial automation applications.
Operating Principle
The Mechanical Pressure Switch NT11 operates using a precision spring-loaded piston mechanism.
As system pressure increases or decreases, the internal piston moves, causing the precision spring to compress or expand. When the pressure reaches the preset switching value, the internal mechanical structure is triggered, causing the electrical contacts to switch and output a control signal.
This simple and reliable mechanical design ensures dependable pressure switching without requiring electronic pressure sensing components.
Applicable Medium
The Mechanical Pressure Switch NT11 is suitable for the following working media:
- Water
- Hydraulic oil
- Lubricating oil
- Compressed air
Product Features
- Compact mechanical pressure switch
- Precision spring and piston design
- High pressure resistance up to 30 MPa
- Stable mechanical switching
- High-quality imported sealing materials
- Available in galvanized steel or 304 stainless steel housing
- Optional protective cover and sealed connector
- Factory preset or field-adjustable pressure settings
- Long mechanical service life
- Suitable for harsh operating environments
- Ideal for OEM equipment and industrial automation
Product Applications
The Mechanical Pressure Switch NT11 is widely used in:
- Engineering machinery
- Construction equipment
- Hydraulic systems
- Pneumatic systems
- Marine equipment
- Railway systems
- Industrial automation
- Remote control systems
- Hydraulic valves
- OEM machinery
- Heavy-duty industrial equipment
Technical Specifications
Switching Performance
| Parameter | Specification |
|---|---|
| Maximum Contact Load | 42 V, 4 A |
| Switch Capacity | 100 VA |
| Rated Voltage | 24 V |
| Rated Power | 45 W |
| Repeatability | ±5% |
Environmental Specifications
| Parameter | Specification |
|---|---|
| Operating Temperature | -40°C to 120°C |
| Protection Rating | IP65 |
Mechanical Specifications
| Parameter | Specification |
|---|---|
| Maximum System Pressure | 30 MPa |
| Mechanical Service Life | 1,000,000 cycles (Example: Pressure cycling from 0–12 MPa to 0) |
Process Connection
| Parameter | Specification |
|---|---|
| Pressure Connection | Stainless Steel |
Electrical Connection
| Parameter | Specification |
|---|---|
| Electrical Connector | 6.3 × 0.8 Plug Terminal |
Materials
| Component | Material |
|---|---|
| Housing | Galvanized Steel / Stainless Steel 304 |
| Pressure-Sensitive Sealing Components | Imported Rubber (Germany) |
| Pressure Connection | Stainless Steel |
Product Advantages
The Mechanical Pressure Switch NT11 combines a robust piston-type pressure sensing mechanism, high-pressure capability, and compact OEM-friendly design to provide dependable pressure control in demanding industrial environments. Its durable construction, optional protective accessories, and long service life make it an ideal solution for engineering machinery, hydraulic equipment, marine systems, and industrial automation.
Typical Applications
The Mechanical Pressure Switch NT11 is commonly installed in:
- Hydraulic power units
- Excavators
- Construction machinery
- Marine hydraulic systems
- Railway equipment
- Industrial hydraulic systems
- Pneumatic control systems
- Hydraulic valve control
- Remote control systems
- OEM equipment
Frequently Asked Questions (FAQ)
How does the Mechanical Pressure Switch NT11 operate?
The NT11 uses a precision spring and piston mechanism. When system pressure reaches the preset value, the internal mechanical structure actuates the electrical contacts and outputs a switching signal.
What media can the NT11 monitor?
The NT11 is suitable for:
- Water
- Hydraulic oil
- Lubricating oil
- Compressed air
What is the maximum pressure the NT11 can withstand?
The piston-type structure is designed to withstand system pressures up to 30 MPa.
Is the NT11 suitable for heavy-duty industrial equipment?
Yes. The NT11 is specifically designed for demanding applications including engineering machinery, marine equipment, railway systems, and hydraulic equipment.
Can protective accessories be supplied?
Yes. According to application requirements, protective covers and sealed electrical connectors can be factory-installed before delivery.
Why Choose the Mechanical Pressure Switch NT11 ?
The Mechanical Pressure Switch NT11 is engineered for reliable pressure control in demanding industrial environments. Featuring a precision piston mechanism, 30 MPa pressure resistance, IP65 protection, high-quality imported sealing materials, and long mechanical service life, it is an ideal solution for hydraulic systems, engineering machinery, marine equipment, railway applications, and OEM pressure control systems.
Overall dimensions
Low pressure switch, medium pressure switch, high pressure switch

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- +86 180 5512 0225
- +86(0551)-65501008
- Address: 206, Block B, No. 2 Tianda Road, High-tech Zone, Hefei City, Anhui Province, China
- We will respond to you within five minutes.




