NR72AB0

Series:	Komatsulite™, NR
Part Status:	Active
Circuit:	SPST-NC
Switching Temperature:	162°F (72°C)
Reset Temperature:	104°F (40°C)
Current Rating - AC:	--
Current Rating - DC:	25A (12V)
Tolerance:	±9°F (±5°C)
Switching Cycles:	6K
Termination Style:	Solder Pad
Mounting Type:	Surface Mount
Package / Case:	2-SMD

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Introduction

The NR72AB0 is a temperature-sensitive device designed for use in industrial control applications. It is a mechanical thermostat temperature sensor, designed to measure temperature and provide reliable switching output when predefined temperature thresholds are exceeded. It typically consists of an insulated body, a thermally sensitive element, and a temperature transport element. It operates along the same principles as bimetallic thermometers but is much more accurate and stable. This article will discuss the design, application field and working principle of NR72AB0.

Design

The body of the NR72AB0 is made of a metal housing that acts as an insulating material, and its design aims to prevent any heat loss to the ambient environment. The thermally sensitive element is made of a bimetallic strip, which is a strip composed of two alloys that expand or contract at different rates when subjected to changes in temperature. This produces a bending action that is used to actuate the temperature switch. The temperature transport element is a pressure chamber filled with a liquid or gas whose properties make it sensitive to temperature changes. This allows the thermostat to sense the temperature across a wide range of values.The construction of the NR72AB0 is extremely rugged, ensuring reliability and longevity. It is also designed for easy installation and minimal maintenance.

Application Field

The NR72AB0 is mainly used in industrial process control applications. It is suitable for controlling steam and hot water systems, engines and motors, boilers and other machinery. It is commonly used in heating and cooling applications and can be used in a variety of other applications, such as refrigeration and ventilation systems.

Working Principle

The working principle of the NR72AB0 is based on the heat transfer between the thermally sensitive element and the temperature transport element. When the temperature reaches a predetermined threshold, the bimetallic strip bends due to the expansion differential between the two alloys, and the change in pressure causes the temperature switch to be actuated. The changes in temperature can then be monitored and controlled.

Conclusion

The NR72AB0 is an effective and reliable temperature-sensitive device for use in industrial control applications. Its rugged construction ensures reliability and its easy installation and maintenance make it well suited for a variety of applications. Its working principle, based on heat transfer between the thermally sensitive element and the temperature transport element, allows the Kelvin temperature to be monitored and controlled with accuracy and stability.

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