Resideo AT140A1018 Transformer

Transformer, 120v/208v/240v Primary to 27v Secondary, 40va, Foot Mounted, Plate Mounted on 2"x4" or 4"x4" Outlet Box, Includes Metal End Bells

AT140A1018 is the direct replacement for 50363

Resideo AT140A1018 Transformer – 120V/208V/240V to 27V | 40VA | Foot & Plate Mounted | UL Listed

Power your 24Vac circuits reliably with the Resideo AT140A1018 Transformer, a high-performance general-purpose transformer designed for HVAC and electrical applications. With multiple primary voltage options (120V, 208V, 240V) and a 27V secondary output at 40VA, this transformer offers maximum flexibility and dependable performance in residential and commercial environments.

Key Features:

• Versatile Voltage Input: Supports 120V, 208V, or 240V primary voltage to 27V secondary output at 40 VA.

• Multiple Mounting Options: Foot mounted, plate mounted on 2"x4" or 4"x4" outlet box, clamp mounted via knockout, or panel mounted for easy installation.

• Durable Construction: Includes metal end bells for added protection and durability.

• Quick & Easy Wiring: Color-coded lead wires for primary connections and screw terminals for secure secondary connections.

• Complies with Industry Standards: UL 1585 listed and CSA certified; meets NEC Class 2 requirements.

Specifications:

• Dimensions: 3-3/16 in. H x 2-3/8 in. W x 3-1/8 in. D (81mm x 60mm x 79mm)

• Temperature Range: -20°F to +105°F (-29°C to +41°C)

• Frequency: 60 Hz

• Primary Connections: 9 in. (229 mm) lead wires

• Secondary Connections: (2) screw terminals

• Certification: UL Listed (File # E14881), CSA Certified

Whether you're replacing an existing unit or installing a new system, the Resideo AT140A1018 offers trusted performance, ease of installation, and compliance with safety standards. Ideal for thermostats, zone valves, and other 24V control systems.