Precise control and reliable protection are premises to guarantee energy safety and efficiency in modern power systems. FH21L latching relay can just meet such requirements. Here is a comprehensive introduction to this high-performance relay.

What is a Power Latching Relay?

A power latching relay is a specific electronic switching device used in power systems and automated control. It is able to maintain its state after the disappearance of a control signal until the arrival of the next one. In such a relay, a permanent magnet or an electromagnet holds the contacts in a closed state and reduces energy consumption therefore, increasing the reliability of the system.

Features of the FH21L Latching Relay:

1.High Switching Capability: Supports contact switching up to 90A, making it suitable for high-current environmental conditions.  

2.Single/Double Coil Control: Provides options for single and double coil control to suit various application needs.  

3.Customization Service: External accessories, including manganese copper shunts and transformers, can be customized based on requirements.  

4.High Dielectric Withstand Voltage: The dielectric withstand voltage between the coil and contacts reaches up to 4KV, ensuring product safety.  

5.Anti-Interference Performance: Offers strong immunity to power frequency interference and consistency, ensuring stable operation in complex electromagnetic environments.  

Product Parameters:

Contact Arrangement: 1A 、1B

Rated Load: 90A 250VAC

Insulation Resistance: 1000MΩ (500VDC)

Dielectric Withstand Voltage: Between open contacts 2000VAC for 1 minute; between contacts and coil 4000VAC for 1 minute

Closing/Opening Time: Both not over 20ms

Ambient Temperature: -40 - 85 ℃

Humidity: 5% to 85%RH.

Application Range:

The FH21L latching relay is widely used in smart meters, compound switches, and new energy fields, making it an ideal choice for power systems and automated control.

Precautions:

1.Factory State: Default off state, but might be influenced by either transportation or installation impact, so a reset might be required before using.

2.Anti-Drop: Avoid dropping the product the product or subject it to any other external force in order to ensure its compliance with the initial performance parameters.

3.Voltage Requirements: The excitation voltage should reach the rated value. Recommended actual driving voltage should be 1-1.5 times the rated voltage and pulse width ≥50ms.

4.Customer Product: Please contact the technical support from Fanhar directly for the customer product.

The FH21L latching relay, with its outstanding performance and safety, has become an indispensable part of the power system and automated control fields. Choosing FH21L means choosing a stable and reliable power control solution.