Mechanical temperature switch NC20-2 series

Brand：NOIKE-AH
Model：NC20-2

Specification

Mechanical Temperature Switch NC20-2

Product Overview

The NC20-2 Mechanical Temperature Switch operates using the bimetal strip principle. When the measured temperature reaches the preset switching point, the curved bimetal strip expands due to heat and actuates the built-in mechanical switching mechanism, causing the electrical contact to switch.

All wetted parts of the NC20-2 Series are manufactured from brass, ensuring reliable performance in industrial applications. The product offers three process connection options:

G1/4
G1/2
M20 × 1.5

The available temperature switching range is 30°C to 120°C, making it suitable for a variety of industrial temperature monitoring and protection applications.

Product Features

Mechanical bimetal operating principle
Brass wetted parts
Three process connection options
Fixed temperature switching points
Normally Open (NO) or Normally Closed (NC) contact options
High-pressure resistance up to 10 bar
IP65 protection rating
Simple, reliable, and maintenance-friendly mechanical design

Product Applications

The NC20-2 Series Temperature Switch is designed to meet various temperature control requirements in:

Hydraulic systems
Lubrication systems
Traditional mechanical systems

It is used to detect whether the operating temperature exceeds the preset maximum or minimum limit, helping protect equipment and maintain safe system operation.

Technical Specifications

Measurement Specifications

Parameter	Specification
Measurement Range	Fixed switching points from 30°C to 120°C (See detailed temperature table)
Maximum Pressure	10 bar
Maximum Medium Temperature	135°C

Switching Output

Parameter	Specification
Output Type	Normally Open (NO) / Normally Closed (NC) Optional
Contact Material	Silver-plated Contacts
Contact Capacity	10 A / 220 VAC
Fixed Hysteresis	Maximum 15°C (<80°C)

Electrical Specifications

Parameter	Specification
Rated Voltage	6–24 VDC / 220 VAC
Wiring Method	Terminal Wiring

Protection Rating

Parameter	Specification
Protection Level	IP65

Materials

Component	Material
Wetted Parts	Brass / Stainless Steel
Housing Material	Black BNR

Wiring diagram

Size chart

Testing Method

The NC20-2 Temperature Switch is tested using high-temperature thermal oil as the test medium.

Test Procedure:

Immerse the hexagonal sensing end face of the temperature switch into the high-temperature thermal oil.
Connect the power supply.
Maintain the test temperature for at least 3 minutes to verify switching performance.

Typical Applications

The NC20-2 Mechanical Temperature Switch is suitable for a wide range of industrial applications, including:

Hydraulic power units
Lubrication systems
Gearboxes and transmission equipment
Industrial machinery
Cooling and heating systems
General industrial temperature protection
OEM equipment

Product Advantages

The NC20-2 combines a mechanical bimetal sensing principle, durable brass construction, and simple switching operation to provide dependable temperature monitoring and protection. With multiple thread options, IP65 protection, and flexible NO/NC contact configurations, it is well suited for industrial environments requiring reliable mechanical temperature control.

Frequently Asked Questions (FAQ)

How does the NC20-2 Mechanical Temperature Switch work?

The NC20-2 operates using a bimetal strip sensing element. When the preset temperature is reached, the heated bimetal strip expands and actuates the internal mechanical switch.

What temperature range is available?

The NC20-2 offers fixed switching points from 30°C to 120°C. Refer to the product selection table for available temperature settings.

What connection threads are available?

The NC20-2 is available with the following process connections:

G1/4
G1/2
M20 × 1.5

What is the protection rating?

The NC20-2 is rated IP65, providing reliable protection against dust and water ingress in industrial environments.

What materials are used for the wetted parts?

The standard wetted parts are made of brass, with brass/stainless steel contact material options as specified.

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Why Choose the NC20-2 Mechanical Temperature Switch?

The NC20-2 Mechanical Temperature Switch provides reliable and cost-effective temperature monitoring for hydraulic, lubrication, and traditional mechanical systems. Featuring a bimetal sensing mechanism, brass wetted parts, multiple connection options, and IP65 protection, it offers dependable switching performance in demanding industrial environments.