Pollin AZF-4 Automatic Phase Switch 16A 250V for TH35 DIN Rail

The Pollin AZF-4 is an automatic phase switch engineered for the reliable management of power supplies within three-phase electrical systems. Rated for 16A and 250V, this device is designed to maintain continuous operation by monitoring phase integrity and automatically switching to a healthy phase should the primary one experience a failure or voltage drop. Its compact design is specifically tailored for standard TH35 DIN rail mounting, allowing for seamless integration into both industrial and residential electrical distribution panels.

Advantages

The primary benefit of the Pollin AZF-4 is its ability to ensure uninterrupted power supply for critical equipment by providing an automated failover mechanism. By constantly monitoring the input phases, the device minimizes downtime and protects sensitive electronics from issues related to phase loss. The robust construction and standard mounting format ensure that it can be easily installed by professionals in existing electrical cabinets without requiring significant modifications to the infrastructure.

Suitable for

• Industrial automation systems requiring phase redundancy
• Residential electrical panels with three-phase power supply
• Critical equipment that must remain powered during phase failure
• Electrical distribution boards where phase monitoring is essential

When it may not be suitable

This device is not intended for use in single-phase electrical systems, as it requires a three-phase input to perform its switching function. It is also not suitable for high-current applications exceeding the 16A rating, as attempting to draw more power may lead to device failure or safety hazards.

Key specifications

• Rated current: 16A
• Rated voltage: 250V
• Mounting type: TH35 DIN rail
• System compatibility: Three-phase electrical networks

How to use

The Pollin AZF-4 should be installed by a qualified electrician in accordance with local electrical codes. The device is snapped onto a standard TH35 DIN rail within the distribution board. Input phases are connected to the designated terminals, and the output load is connected to the switch output. Once installed, the device operates automatically, requiring no manual intervention to switch between phases during normal operation.

What to consider before purchase

• Verify that your electrical system is a three-phase configuration
• Ensure the total load current does not exceed 16A
• Check available space on the DIN rail within your distribution panel
• Confirm that the voltage requirements match your local power grid

Usage recommendations

Regularly inspect the electrical connections to ensure they remain tight and free from oxidation. It is recommended to test the phase switching functionality periodically during scheduled maintenance to confirm the device is responding correctly to simulated phase loss.