MDR-67-3

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Category: Power Relays, Over 2 Amps

The MDR-67-3 is a classic three pole power latching relay that is available as a series or a complete design. It is a medium-sized latching relay, as it is rated for a significant load of up to 40 Amps and can withstand the unforgiving abuse of high voltages. It is used for a variety of applications such as light switches, industrial motors, heating elements, lighting and a variety of other power control applications.

The MDR-67-3 uses a common contact mechanism, and is designed to combine the frequent cycles of switching and de-energizing, while retaining a reliable sealing and stable contact separation. As its name suggests, its design includes three contact poles, two Normally closed (NC) or Normally Open (NO) "On" contact positions and one protected "3" contact position. This is quite useful, as it can cover a variety of circuit applications.

The MDR-67-3 uses a snap-action bimetallic mechanism incorporating a supported, almost airtight and very reliable Pressure-Seal feature. This pressure seal is used to keep the internals of the relay free from dust, moisture, extreme temperatures and other environmental factors. It is a very important feature of the device, making it durable and reliable. Due to the pressure seal, the contacts remain closed and impervious to outside influences such as dust and moisture.

The MDR-67-3 works on the principle of a spring mechanism which is actuated by an electromagnet. The electromagnet acts as an anchor, and makes a contact when energized, allowing the spring mechanism to operate at its optimal level. When the contact is closed, the current flows from the source to the load, and when the contact is opened, the current is interrupted.

The MDR-67-3 can be used for general-purpose power switching and for controlling various types of motor starters, both single-phase and multi-phase. It is useful for many applications, such as motor control, lighting control, HVAC control, and a variety of other applications. It is also suitable for controlling various household appliances, such as air conditioners, washing machines, fans, and ovens.

Furthermore, the MDR-67-3 is suitable for use in applications where the load is a combination of resistive, inductive, and capacitive loads. This implies that the relay can efficiently control all sorts of devices, whether they are static or dynamic.

In summary, the MDR-67-3 is a popular three pole latching relay that is designed for a wide range of power control applications. It is rated for significant loads, and it uses a snap-action bimetallic mechanism that incorporates a pressure seal, making it both reliable and durable. Its unique design allows it to be used in a variety of applications, whether it is controlling static or dynamic loads.

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