71MAS30-02D04N

Actuator Type:	Flatted (3.17mm Dia)
Operating Force:	2.880 ~ 23gfm
Panel Cutout Dimensions:	--
Depth Behind Panel:	27.87mm
Features:	Shaft and Panel Sealed
Termination Style:	Solder Lug
Mounting Type:	Panel Mount
Contact Finish:	--
Contact Material:	Silver Alloy
Angle of Throw:	30°
Actuator Length:	9.53mm
Series:	71
Voltage Rating - DC:	30V
Voltage Rating - AC:	115V
Current Rating:	250mA (AC/DC)
Contact Timing:	Non-Shorting (BBM)
Circuit per Deck:	3P4T
Number of Poles per Deck:	3
Number of Decks:	2
Index Stops:	Fixed
Number of Positions:	4
Part Status:	Active

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## Introduction Rotary switches are important electrical components used in a wide variety of industrial and consumer applications. They provide reliable switching and control capabilities, allowing users to quickly and reliably select from a number of options. One of the most common and widely used types of rotary switch is the 71MAS30-02D04N. This rotary switch offers excellent performance and features, making it a popular choice for many applications. In this article, we will explore the 71MAS30-02D04N application field and working principle in greater detail.
## Application field The 71MAS30-02D04N is a high-performance rotary switch with a wide range of applications. It is primarily used for control and switching applications in industrial and consumer electronics. Some of the most common applications include motor control, lighting control, heating/cooling control, motor speed control, power switching, as well as various other applications. It is also commonly used in home appliances such as air conditioners, refrigerators, vending machines, and washing machines. In addition, it is also used in a variety of scientific instrumentation and medical devices, as well as avionics, military and aerospace systems.
## Working Principle The 71MAS30-02D04N works on the principle of a rotary switch. It has three primary components—a rotor, a stator, and a contact system. The rotor is a cylindrical disc with multiple contact points that rotate within a stator. The stator is a stationary housing with an array of cam- or sprung-loaded contacts that can accommodate a variety of layouts, including C-type, D-type and K-type. When the rotor is rotated, the contacts align and make contact with the corresponding contact points on the stator. The contact points can be configured for either normally-closed or normally-open operation. This means that the contacts can be arranged to open or close the circuit when the rotor is turned. The 71MAS30-02D04N is designed with a number of features to ensure reliable and precise switching. For example, the contacts are encased in a thermoplastic coating and sealed with a polyurethane foam to protect them from dust and moisture. The polyurethane foam also helps ensure reliable operation in temperatures ranging from -40°C to +105°C and up to 98% humidity. Moreover, the contact system is designed for low resistance and low wear, allowing for reliable and long-lasting performance.
## ConclusionThe 71MAS30-02D04N is one of the most popular rotary switch designs. It is used in a wide variety of industrial and consumer applications and it offers excellent performance and features. It works on the principle of a rotary switch and has three primary components—a rotor, a stator, and a contact system. The contact system can be configured for either normally-closed or normally-open operation. Additionally, the 71MAS30-02D04N is designed to provide reliable and precise switching, with a thermoplastic coating to protect the contacts and a polyurethane foam seal to ensure reliable operation in a variety of temperatures and humidities.

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