ASPYRE® SCR Power Controllers

Watlow’s new ASPYRE SCR power controller family is flexible and scalable, and available with a variety of options allowing one platform to be re-used across a wide range of applications, which can help save time and money. ASPYRE models available include sizes from 35 to 700 amps.

This power controller family features multiple advanced microprocessor-based firing and control mode algorithms. Combined with diagnostics and several communications options the product enables equipment and factory automation.

Controller firing modes include zero cross, burst firing, single cycle, delayed triggering and phase angle. These smart algorithms enable the product to easily control a wide base of heater loads including Nichrome®, moly, silicon carbide, tungsten quartz and infrared lamps and transformer-coupled loads. ASPYRE offers a comprehensive list of modular options that deliver space and labor savings including controlled legs (1, 2 or 3), semiconductor fusing, load current measurement, amperage size and user interface.

Contact your local sales office or distributor for availability in your region.

Selecting a Firmware Release

Refer to “Updating the Firmware” section of your product’s user manual.

-If your firmware version is below 1.14.0, contact technical support.

-If your firmware version is between 1.14.0 – 1.25.0 use version 1.53.0

-If your firmware version is >= 1.26.0 use the following table to determine what version to load:


35A – 40A

60A – 210A

≥ 300A or 690V Line/Load Voltage

1 Leg




2 Leg




3 Leg




Related Documentation

Visual Designer™ Request A Quote Locate a Sales Office Download Software

Latest Version: 1.1.1 (March 22, 2019)

To download the installation file:

  1. Click "Download Software"
  2. Save the installation file on your desktop.
  3. When the download is complete, close your browser and any other applications.
  4. Double-click the installation program and follow the on-screen instructions.

Minimum System Requirements:

Microprocessor: 1 gigahertz (GHz) or faster 32-bit or 64-bit

Memory: 1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)

Disk Space: 250 megabytes (MB)

Video: 1400 x 1050 or higher

Operating System: Microsoft® Windows® 10, 8.1 or 7

Port for controller communications: USB 1.0 or EIA-485 half duplex (2-wire) 


Use of ASPYRE Configurator software is subject to the end-user license agreement displayed upon installation.

Microsoft® is a registered trademark of Microsoft Corporation.
Windows® is a registered trademark of Microsoft Corporation.