ÖZTÜRK ATR-63 Automatic Phase Selector Reversing Relay – 1 to 63 A

ÖZTÜRK ATR-63 Automatic Phase Selector Reversing Relay – 1 to 63 A

The ÖZTÜRK ATR-63 is an automatic phase-change relay designed to provide continuous single-phase power from a three-phase network.

The device continuously monitors the voltage of the three phases L1, L2, and L3. When the active phase becomes unstable, fails, or exceeds the set voltage limits, the relay automatically switches to another available and compliant phase.

Thanks to its three digital displays, it allows simultaneous viewing of the voltage of each phase. Its adjustable capacity of up to 63 A makes it suitable for domestic, commercial, and professional installations requiring reliable power continuity.

The relay also includes settings for undervoltage and overvoltage thresholds, switching delay, and phase priority.

Main Features

Automatic switching between three phases
Adjustable operating current from 1 to 63 A
Continuous monitoring of phases L1, L2, and L3
Three digital displays for voltage readings
Undervoltage protection
Overvoltage protection
Adjustable switching timer
Priority phase selection
Automatic return to the main phase according to the setting
Single-phase output (phase + neutral)
Installation on electrical panel
Automatic control without manual intervention
Operating Principle

The ATR-63 relay receives the three phases from the electrical network:

L1
L2
L3
Neutral (N)
The device analyzes the available voltage on each phase and supplies the output with the selected phase.

In the event of a break or fault on the active phase, it checks the other phases and then automatically switches to a phase whose voltage is within the permissible range.

When the priority phase becomes stable again, the device can automatically return to it according to the selected configuration.

Technical Specifications

Detailed Feature
Brand: ÖZTÜRK
Model: ATR-63
Type: Automatic phase changeover relay
Number of phases monitored: 3 phases
Input: N + L1 + L2 + L3
Output: N + L single-phase
Adjustable rated current: 1 to 63 A
Display: 3 LED digital displays
Displayed voltages: L1, L2, and L3
Undervoltage protection: Yes, adjustable threshold
Overvoltage protection: Yes, adjustable threshold
Time delay: Adjustable
Priority selection: L1, L2, or L3 depending on configuration
Switching: Automatic
Installation: DIN rail / electrical panel
Manual control: On/off button and front panel settings
Use: Indoor
Application: Home, commercial, office, workshop, and professional installations
Available settings

Undervoltage threshold

Allows you to set the minimum acceptable voltage. If the voltage drops below the set value, the device automatically disconnects the affected phase.

Overvoltage Threshold

Allows you to define the maximum permissible voltage to protect connected equipment from excessive power.

Switching Delay

The adjustable delay prevents immediate switching during micro-outages or very short power fluctuations.

Phase Priority

The selector allows you to choose the priority order between phases L1, L2, and L3, according to the installation's requirements.

Indicators and Display

The three LED displays show the voltage present on:

Phase L1
Phase L2
Phase L3
The indicator lights also allow you to identify the phase currently being used to power the load.

Recommended Applications

The ATR-63 automatic changeover relay is suitable for:

Three-phase powered houses and villas
Shops and stores
Offices and administrative buildings
Workshops and small industrial facilities
Power-sensitive equipment
Refrigerators and cold rooms
Security systems
Servers, networks, and electronic equipment
Pumps and automation systems compatible with the relay's power rating
Advantages

Improved power continuity
Automatic switching in case of a single-phase failure
Simultaneous visual monitoring of all three voltages
Protection of equipment against electrical fluctuations
Reduced manual intervention
Adjustments accessible directly from the front panel
Compact size for electrical panels
Capacity up to 63 A
Connection

Top Input

N: Neutral
L1: First phase
L2: Second phase
L3: Third phase
Bottom Output

N: Output neutral
L: Automatically selected single-phase
Important Note

Installation must be carried out by A qualified electrician is required. The cable and protective device ratings must be selected according to the actual current of the installation.

For highly inductive loads, motors, or high power applications, it is recommended to use the ATR-63 relay to control suitable contactors, rather than directly powering the load.

Package Contents

1 × ÖZTÜRK ATR-63 Automatic Phase Changeover Relay
1 × Manual or Wiring Diagram (depending on packaging)