D2HW-BL213M

Snap-action, limit switches are electro-mechanical devices used for detecting the presence or absence of object, object limits or disturbance in a certain position. Their name origins from their contact mechanism: the contacts snap open or closed with a definite motion.

D2HW-BL213M is a subminiature snap action, limit switch with a lever operated plunger. It has a gold-plated silver alloy contact material to ensure low contact resistance, a high temperature rating of 125 °C, and a compact size of 11.5 mm x 8.5 mm.

Application Field

D2HW-BL213M switch can be used in many industries including:

• Commercial and industrial automation
• Medical and laboratory equipment
• Domestic appliances
• Electronic control instruments

D2HW-BL213Mswitch is specially designed to provide reliable mechanical operation, a positive tactile indication, and long service life. Its application range covers limit and control switches, motor disconnects, pushbutton and valve actuation, as well as pressure and flow sensing.

Working Principle

D2HW-BL213M switch consists of a lever and a plunger. When the lever is moved, the plunger is pressed up to the contact point. This will then cause an electrical connection between the two contact points and will a circuit, thus activating the switch. When the lever is released, the plunger will be released and the contact points will be disconnected.

D2HW-BL213M switch also has a special feature which ensures reliable operation. The moment the lever is moved, the plunger is forced by a spring against the contact material. This provides a tight electrical connection which is not affected by vibration or external forces.

In addition, the switch is designed with a snap-action mechanism for rapid switching and long service life. When the switch is actuated, the plunger will be operated by the lever and this motion will cause the internal spring and contact assembly to snap open or closed. This snap-action behaviour ensures a reliable, repeatable switch operation with every use.

D2HW-BL213M switch is also designed to withstand high temperatures up to 125 °C, making it suitable for high temperature applications and environments.

Overall, D2HW-BL213M switch is a reliable, compact and cost-effective solution for detecting the presence or absence of objects, object limits or disturbances in a certain position. It is an ideal choice for applications requiring snap action, limit switches with high temperature rating.