Power Module Relay with GFCI

Power Module Relay with GFCI

$175.00 USD
$175.00 USD $175.00 USD
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Upgrade your electric floor heating system with confidence. The USG-4000 Power Module Relay with built-in GFCI is the perfect solution for expanding large radiant heated floors in bathrooms, kitchens, and living spaces. Whether you're adding more square footage or powering an additional radiant heat floor cable, this compact module boosts your system's output by 15 amps—giving you the flexibility to scale your floor radiant heat setup with ease. Designed for seamless integration with your existing thermostat, it supports safe, efficient operation of your electric underfloor heating system, including high-demand areas like a heated bathroom floor or multi-room radiant heat flooring projects.
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Tags: heating, radiant, thermostat,
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Description Features Specification Product Literature Related Product FAQs Reviews

Description

Perfect for expanding your electric floor heating system, this Power Module Relay with built‑in Class A GFCI increases output by 15 A per module—ideal for large-area electric underfloor heating installations. It creates seamless control across radiant heated floors, whether you are outfitting a heated bathroom floor or extending existing radiant heat flooring zones with radiant heat floor cable or mats.

Features

  • Designed to support extended radiant heated floors beyond the capacity of a single thermostat
  • Enables larger floor radiant heat systems without extra thermostats
  • Compatible with electric underfloor heating cables, mats, and radiant heated floor kits
  • c‑UL‑us listed and safe for heated bathroom floor applications thanks to Class A GFCI
  • Screw terminals facilitate safe and easy installation
  • Fits single-gang (2-inch box). Double-gang (4-inch box) is recommended for more room to work with multiple mats

Heated Area Information

Specification

Rated Voltage (Supply): Dual voltage (120 V, 208 V, 240 V)
Load (Output Relay):
  • 15 A maximum (resistive load)
  • Increase load capacity by 15 A per module
Maximum Power Load:
  • 1,800 Watts at 120 V
  • 3,120 Watts at 208 V
  • 3,600 Watts at 240 V
Floor sensor: NTC 10 Kohm
Floor limit range: +41 to +104°F (+5 to +40°C)
Amb. Temp. range: +32 to +104°F (0 to +40°C)
GFCI: Class A (5 mA trip level)
Approvals: c-UL-us Listed and certified for wet locations

Literature

Installation Manual

Product Sheet

Data Sheet

FAQs

What are the differences between the Programmable Touch Thermostat LED Wi-Fi and the Programmable Standard Thermostat?

The Programmable Touch Thermostat features a sleek, low profile design, an LED screen, Wi-Fi, app-based access for control of your radiant floor heating anywhere. Integrated voice control is included and ready to work with Amazon Alexa or Google Assistant. You can also create custom schedules for multiple weeks at a time. In addition, the LED thermostat comes with a 15-foot NTC sensor for precise temperature regulation and can operate on 120V/208V/240V power supplies.

Is connecting the Programmable Touch Thermostat LED Wi-Fi to my radiant heat system difficult?

No. The thermostat’s included app makes installation a breeze. The app will guide you through each step of installation and assure correct installation and operation throughout the life of your floor heating system.

What programmable modes does the thermostat feature?

The Programmable Standard Thermostat includes both operational and safety modes for flexible, reliable control. It offers three operational modes—ambient controlled, floor controlled, or ambient only—allowing you to customize how the temperature is monitored. For added protection and convenience, it also features anti-freeze, open-window detection, floor protection, vacation mode, and a child lock to prevent tampering by curious kids. All modes are simple to navigate on the thermostat’s bright 3.5" color touch screen.

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