Product Description

Restore reliable equipment control with the Pentair 520106 OEM Relay Kit. This genuine Pentair high-power relay is designed for compatible IntelliTouch, EasyTouch and IntelliCenter pool and spa automation systems.

The relay receives a control signal from the automation circuit board and switches the connected equipment circuit on or off. It is commonly used for compatible single-speed pool pumps and other approved auxiliary equipment loads controlled by the automation system.

Rated at 20 amps and marketed for compatible motor loads up to 3 HP, the 520106 is an ideal replacement for a failed relay that no longer activates equipment, remains stuck in one position, chatters, buzzes or shows signs of overheated contacts.

This listing includes the replacement relay assembly only. The automation panel, circuit breaker, field wiring and connected pool equipment are not included. Pentair’s current parts catalog identifies 520106 as a 20-amp relay kit for IntelliTouch and EasyTouch systems; it is also used in compatible IntelliCenter installations that accept this relay assembly.

Key Features

• Genuine Pentair OEM replacement relay
• Rated for compatible loads up to 20 amps
• Marketed for compatible motor loads up to 3 HP
• Designed for select Pentair automation load and power centers
• Compatible with IntelliTouch and EasyTouch control systems
• Compatible with select IntelliCenter installations
• Attached low-voltage control lead for connection to the automation board
• Switches approved high-voltage equipment loads through the automation system
• Suitable for compatible single-speed pump and auxiliary circuits
• Direct replacement for Pentair part number 520106
• Barcode / UPC 788379644550
• Professional electrical installation recommended

Product Benefits

Restores Automated Equipment Control

A failed relay can prevent a pump or auxiliary circuit from turning on or off when commanded. Replacing the relay helps restore scheduled and manual equipment control through the automation system.

Genuine OEM Compatibility

The Pentair 520106 is designed to match compatible Pentair control-panel mounting positions, circuit-board relay connections and equipment wiring configurations.

Supports High-Power Equipment Loads

The relay is rated at 20 amps and is commonly identified as a 3 HP automation relay. The actual allowable load depends on equipment voltage, motor specifications, circuit protection and applicable electrical codes.

Cost-Effective System Repair

Replace the failed relay without purchasing a complete automation load center, power center or control system.

Specifications

The UPC associated with Pentair part number 520106 is 788379644550.

Compatibility

Designed for compatible installations within the following Pentair automation families:

• Pentair IntelliTouch pool and spa control systems
• Pentair EasyTouch pool and spa control systems
• Select Pentair EasyTouch PL4 and PSL4 systems
• Select Pentair IntelliCenter control systems and legacy upgrade configurations

Compatibility depends on the control-system model, enclosure configuration, relay position, connected equipment and electrical load.

Before ordering, confirm:

• Existing relay part number is 520106
• System uses the same relay mounting configuration
• Automation board accepts the attached two-wire control connector
• Connected equipment does not exceed the relay rating
• Circuit voltage and motor load meet the equipment requirements
• Circuit breaker and conductor sizes are appropriate for the connected load

Do not select the relay based only on physical appearance. Pentair offers different relays for heaters, two-speed pumps and other specialized applications.

Common Applications

The Pentair 520106 may be used to switch approved equipment such as:

• Compatible single-speed pool pumps
• Compatible single-speed spa pumps
• Booster pumps
• Water-feature pumps
• Air blowers
• Approved lighting circuits
• Other auxiliary equipment within the relay’s electrical rating

Equipment compatibility must be confirmed using the equipment nameplate, automation-system wiring diagram and applicable electrical requirements.

Variable-speed pumps are generally controlled through a dedicated communication connection and may require continuous power rather than routine relay switching. Follow the pump and automation manufacturer’s wiring instructions.

Package Includes

• One Pentair 520106 OEM relay assembly
• Attached low-voltage automation control lead and connector

Not Included

• Automation load center or power center
• IntelliTouch, EasyTouch or IntelliCenter circuit board
• Circuit breaker
• Field wiring
• Additional wire connectors
• Two-speed pump relay
• Heater relay repair kit
• Connected pool or spa equipment
• Installation labor

Signs the Relay May Need Replacement

Replacement may be required when:

• Connected equipment does not turn on
• Equipment remains on after the automation system turns it off
• The relay clicks but does not energize the equipment
• The relay buzzes or chatters during operation
• Relay terminals or wiring show heat discoloration
• Contacts are burned, pitted or stuck
• The relay operates intermittently
• The control system displays the command correctly, but the equipment does not respond
• Testing confirms that the automation signal is present but the relay is not switching properly

Similar symptoms can also be caused by a tripped circuit breaker, damaged wiring, failed equipment motor, defective automation board or incorrect programming. The complete circuit should be tested before replacing the relay.

Installation Information

Installation involves both low-voltage control wiring and potentially lethal line-voltage electrical connections. Service should be performed by a qualified electrician or experienced pool-automation technician.

General installation procedure:

1. Turn off power to the automation system at the main circuit breaker.
2. Confirm that all power sources entering the load or power center are disconnected.
3. Verify the absence of voltage with an appropriate testing instrument.
4. Photograph and label the existing relay wiring before disconnecting it.
5. Disconnect the line, load and low-voltage control connections.
6. Remove the failed relay from the mounting position.
7. Install the replacement relay in the correct location.
8. Reconnect the conductors according to the automation and equipment wiring diagrams.
9. Connect the relay control lead to the correct filter-pump or auxiliary socket.
10. Inspect all terminals for secure connections and damaged conductors.
11. Reinstall all protective panels before restoring power.
12. Test manual and scheduled operation through the automation system.

Pentair specifies that automation-system electrical work must follow applicable national, Canadian and local electrical codes. The connected equipment must have suitable circuit protection, grounding and bonding, and the total controlled load must not exceed the relay rating.

Important Electrical Safety Information

• Disconnect all electrical power before opening the automation enclosure.
• Do not assume the circuit is de-energized because the equipment is turned off at the control panel.
• Verify voltage with a properly rated meter.
• Use copper conductors sized for the connected load and circuit protection.
• Replace damaged or heat-discolored wiring and terminals.
• Do not exceed the relay’s current or horsepower rating.
• Do not use the relay as a substitute for a circuit breaker or motor-overload device.
• Reinstall the high-voltage protective panel before operating the system.
• Follow the wiring diagrams for the automation system and connected equipment.

Incorrect installation can cause electrical shock, fire, equipment damage, serious injury or death.

Frequently Asked Questions

Is this a genuine Pentair relay?

Yes. Part number 520106 is a genuine Pentair OEM automation relay kit.

What is the relay’s current rating?

Pentair lists the 520106 as a 20-amp relay kit.

Why is it called a 3 HP relay?

The relay is commonly marketed for compatible motor loads up to 3 HP. Actual compatibility depends on the motor voltage, full-load current, starting characteristics and electrical installation.

Does it fit IntelliTouch systems?

Yes. The relay is listed as a replacement part for compatible Pentair IntelliTouch automation systems.

Does it fit EasyTouch systems?

Yes. Pentair lists the 520106 relay kit for compatible EasyTouch systems, including select PL4 and PSL4 configurations.

Does it fit IntelliCenter systems?

It is used in select IntelliCenter load-center and upgrade installations that accept the same relay assembly. Confirm the existing relay part number and system wiring before ordering.

Can it control a single-speed pool pump?

Yes, provided the pump’s voltage, horsepower and electrical load fall within the relay and automation-system ratings.

Can it be used for a variable-speed pump?

Variable-speed pumps are normally supplied with continuous power and controlled through a communication cable. Follow the pump and automation-system instructions rather than assuming the pump should be switched through this relay.

Is this the two-speed pump relay?

No. Pentair uses a different relay assembly for compatible two-speed pump applications.

Is this the heater relay?

No. A low-voltage heater-control relay or heater relay repair kit is a different component. Confirm the required part number before purchasing.

Is the circuit breaker included?

No. This listing includes the relay assembly only.

Does the relay include its control-board connector?

The relay assembly includes an attached low-voltage control lead used to connect it to the appropriate relay socket on a compatible automation board.

Can a homeowner install this relay?

Because installation involves high-voltage circuits, professional installation by a qualified electrician or pool-automation technician is strongly recommended.