D4N-2D26

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D4N-2D26 is a type of snap action limit switch. Snap action limit switches are electrical switches that open and close at an established limit. It is designed to act as an external actuator in a circuit when the set limit of a mechanism is tripped. The switch blade contacts remain in one state until an exceptional displacement is met. When this predetermined point is reached, the switch contacts quickly make or break contact to energize or de-energize the circuit accordingly. The mechanism is designed to provide a good tactile feedback to the user and provide a reliable, repeatable switching action under numerous applications.

The construction of a D4N-2D26 limit switch consists of a switch blade, actuator/armature, spring housing, stamping, contact blocks, and a mounting bracket. When the limit switch is in its un-actuated state, the spring housing and actuator unit is on “rest” and the electrical contacts within the housing are in the usual “open” position. When the armature of the limit switch is actuated, the contact arms move and make contact with the contact blocks, depending on which type of limit switch is utilized internally.

D4N-2D26 snap action limit switches can be used in a wide range of applications, including automotive, home appliances and industrial controls. Common applications include predicting the movement of a system, such as measuring the displacement and rotation of a motor, monitoring the lift of a linkage, or detecting the position of another element in a mechanism. In the automotive industry, the limit switch can be mounted on the throttle, providing safety measures to ensure the car does not exceed a set speed.

Other than industries and domestic applications, D4N-2D26 is also used in robotics, packaging equipment, pumps and compressors, textiles, and many other applications. Its contact blocks, compact size, and ease of installation makes it an ideal choice for countless applications. Furthermore, the limit switch offers a vast amount of configurations, making it suitable for various system designs. Finally, the switch offers superior repeatability and a long life span, making it a perfect choice for industrial and OEM applications.

When it comes to operation, D4N-2D26 uses a plunger to actuate the lever against the body of the switch and mechanically move the contact arms to make or break contact with the contact blocks. There are three types of limit switches, including lever arm, special arm, and finger. In a lever arm, the plunger is mechanically linked to the lever arm and uses an adjustable cam to make contact. The special arm uses a push rod instead of a plunger and is protected by a spring for faster response. A finger limit switch is best for highly abrasive, dirty environments as it does not contain a lever arm or cam. All three types are normally open switches, but can be changed to make it a normally closed switch if needed.

In conclusion, D4N-2D26 snap action limit switch has numerous applications and is a simple yet reliable solution for many industries. Its contact arms are actuated via a plunger, spring, lever arm, special arm, or finger, providing different levels of protection against dust and dirt. The switch offers a wide variety of configurations and a long life span, making it suitable for many system designs. Furthermore, the easy installation and superior repeatability makes the switch a perfect choice for various applications.

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