Transfer Switch

GRL GRUOP > Electrical Protection > Transfer Switch > Automatic Transfer Switch > DNH41 Automatic Transfer Switch 10-80A ATS

DNH41 Automatic Transfer Switch 10-80A ATS

Rated Operational Voltage： AC230V

Rated Insulation Voltage： AC500V

Rated Frequency：50Hz/60Hz

Frame Rated Current：10-80A (Adjustable)

Power Consumption：4.5VA,AC230V

Rated impulse Withstand Voltage：1.5kV

Dielectric Strength: 2kV

Switching Time (Main to Backup): 3s

Switching Time (Backup to Main): 1-30s (Adjustable)

The DNH41 Automatic Transfer Switch (ATS) is designed to ensure a seamless transition between two power sources, providing a reliable and uninterrupted power supply. Operating at a rated insulation voltage of AC500V and working voltage of AC230V, this switch is ideal for switching between mains power and generator circuits in residential, commercial, and industrial applications.

Compliant with international standards such as IEC 60947-3 and IEC 60947-11, the DNH41 ATS guarantees safe, efficient, and automatic power switching with real-time monitoring capabilities.

Technical Parameter

Specification	Details
Rated Operational Voltage	AC230V
Rated Insulation Voltage	AC500V
Rated Frequency	50Hz/60Hz
Frame Rated Current	10-80A (Adjustable)
Power Consumption	4.5VA, AC230V
Rated Impulse Withstand Voltage	1.5kV
Dielectric Strength	2kV
Switching Time (Main to Backup)	3s
Switching Time (Backup to Main)	1-30s (Adjustable)
Mounting Type	DIN Rail (35×7.5mm)
Protection Level	IP20
Operating Temperature	-5°C to +55°C
Pollution Degree	2
Wiring Capacity	16-25mm²

Structure and Feature

Key Advantages & Selling Points

Automatic & Fast Power Switching – Transfers power within 3 seconds in case of mains failure and switches back to mains power after a pre-set delay (1-30s adjustable).
Real-Time Monitoring – Displays voltage and current in real-time, providing users with accurate power status updates.
Overload Protection with Adjustable Alarm – Supports adjustable current settings from 10A to 80A with an overload alarm function to enhance system protection.
Compact DIN Rail Installation – Designed for 35mm DIN rail mounting, making installation quick and hassle-free.
High Electrical Endurance – Built with a rated impulse withstand voltage of 1.5kV, ensuring long-term durability and safety in demanding environments.
LED Status Indicators – Features intuitive LED indicators for easy status identification:

Mains Power (Blue)
Generator Power (Blue)
Load Active (Green)
Fault Detection (Red)

Wide Operating Conditions – Works efficiently in temperatures ranging from -5°C to +55°C, making it suitable for various environmental conditions.

How the DNH41 Automatic Transfer Switch Works

The DNH41 ATS continuously monitors the status of both power sources. In the event of a main power failure, it automatically switches to the backup power (generator) within 3 seconds. Once the main power is restored, the switch delays the transition (adjustable from 1-30s) before safely switching back to the primary power source.

This automatic transition eliminates manual intervention and prevents power disruptions, making it ideal for critical applications such as data centers, security systems, and industrial equipment.

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DNH41 Automatic Transfer Switch Installation & Operation Guide

Installation Steps:

Ensure Power Is Off – Before installation, disconnect the power supply to prevent electrical hazards.
Mount on DIN Rail – Securely install the DNH41 ATS on a 35mm DIN rail in a vertical position.
Connect Wiring – Follow the designated input and output terminals for mains and backup power. Ensure proper wire capacity (16-25mm²).
Adjust Settings – Set the current alarm range (10-80A) and define the switching delay time (1-30s) based on your system requirements.
Power On & Test – After installation, switch on the power supply and test the ATS function to ensure proper operation.

Operating Instructions:

Manual Test: Users can manually test the switch functionality to verify power transfer efficiency.
Monitoring: Observe LED indicators to check power source status and detect potential faults.
Maintenance: Regularly inspect the ATS for loose connections or signs of overheating to maintain optimal performance.

DNH41 Automatic Transfer Switch Operating Instructions:

Manual Test: Users can manually test the switch functionality to verify power transfer efficiency.
Monitoring: Observe LED indicators to check power source status and detect potential faults.
Maintenance: Regularly inspect the ATS for loose connections or signs of overheating to maintain optimal performance.

DNH41 Automatic Transfer Switch Safety Precautions & Important Notes

Do not exceed the rated current (80A) to prevent overheating or electrical failures.
Ensure installation is performed by a qualified electrician to avoid wiring mistakes.
The switch should not be exposed to moisture, corrosive gases, or excessive vibrations.
Allow adequate ventilation around the switch to prevent overheating.
Perform periodic maintenance checks to ensure long-term reliability and safety.