Drexma Relay/ Power Module USG-4000 for Electric Radiant Floor Heating, with Class A GFCI, Multi Voltage, For 120 – 240 V Heating Cables, For Use with Programmable Touchscreen Smart WiFi Thermostat

Product Features:

• Drexma power module relay is specifically engineered to extend the power output capacity of compatible floor heating thermostats, working exclusively with UCG, UDG, and UTN thermostat models for consistent and reliable heating performance.
• This expansion power module for electric radiant floor heating supports 120V and 240V heating cables, heating wires, and underfloor heating mats, making it suitable for large-area heated floor installations in residential and commercial spaces.
• Designed with a built-in Class A GFCI, the floor heat power unit provides enhanced electrical safety, protection against ground faults, and a single-point temperature control for an entire radiant floor heating system.
• The power module is fully controlled by the main thermostat, allowing the electric floor heating system to efficiently warm the subfloor and floor covering using a heating cable, heat mat, or floor heating membrane.
• An excellent solution for creating a large heated tile floor system, this expansion unit allows homeowners and installers to increase total heating load, enabling complete electric floor heating coverage that provides long-lasting comfort and energy-efficient operation.
• Ideal for tile, stone, vinyl, laminate, and engineered flooring applications, the Drexma power relay ensures compatibility with modern heated floor designs, floor sensors, and various underlayment systems.
• The unit features a user-friendly design that simplifies wiring and installation, making it suitable for new construction and renovation projects requiring additional heating zones or extended power output.

Product Description:

The Drexma USG-4000 Power Module is a high-performance expansion unit designed for use with Drexma UCG, UDG, and UTN thermostats in electric radiant floor heating systems. Engineered to extend the thermostat’s power output by an additional 15 amps, this module allows installers to create large-area heated floor systems using 120V or 240V floor heating cables, floor warming mats, and heating membranes. Equipped with a built-in Class A GFCI, the USG-4000 ensures enhanced electrical protection and maintains a single, centralized temperature control point throughout the entire heated floor system.

Perfect for ceramic tile, porcelain tile, stone flooring, vinyl plank, laminate floors, and engineered surfaces, the Drexma USG-4000 supports a wide range of floor coverings and underfloor heating applications. By connecting this power module to a compatible heated floor thermostat, users can significantly increase total heating load capacity, making it ideal for larger rooms, open-concept areas, basements, and multi-zone installations. The expansion module provides dependable control and efficient heat distribution through heating wiring, warming cable, or heat mats.

Designed with installer convenience in mind, the module features intuitive wiring terminals, seamless thermostat communication, and compatibility with existing floor temperature sensors. It is an excellent solution for renovations, upgrades, and new-build electric radiant heating projects where additional amperage capacity is required. Rated up to 15 amps, the relay is recommended to be used at no more than 80 percent of maximum load for long life and reliable performance. When combined with the main thermostat, this expansion relay enables a highly energy-efficient heated flooring system that delivers optimal comfort, stable operation, and extended heating coverage across large indoor spaces.