Resideo - Honeywell Home AT40A1139

AT40A1139 transformer from Resideo Honeywell Home delivers a reliable 40 VA power solution, stepping down from 240V AC to 24V AC for panel-mount control applications. This compact, panel-mount transformer is designed to fit installations where a dedicated low-voltage supply is required, providing a stable secondary voltage for compatible control circuits. Engineered to meet standard electrical panel practices, it simplifies wiring and maintenance.

With a panel-mount form factor, the AT40A1139 keeps wiring organized inside equipment enclosures and supports straightforward integration into standard control panels. The 240V input and 24V output are ideal for supplying the secondary circuits used in many low-voltage systems, helping installers meet space and efficiency goals. It features standard terminals for easy hook-up and reliable connection.

Designed for dependable operation in everyday settings, this transformer combines a practical size with robust performance, making it a versatile choice for residential and light commercial applications that demand reliable 24V power from a 240V source. Its compact footprint fits tight panel spaces while delivering steady voltage for critical control tasks.

• Power rating: 40 VA
• Input: 240V AC
• Output: 24V AC
• Mounting: panel-mount
• Brand alignment: Resideo / Honeywell Home