Functional Devices PSH40AB10 Enclosed Single 40VA 120V to 24VAC UL Class 2 Power Supply with 10A Main Breaker

The Functional Devices PSH40AB10 is an enclosed single-output, 40 VA Class 2 power supply designed to convert 120 VAC input to a safe 24 VAC output. Purpose-built for HVAC controls, building automation systems, and temperature control applications, this unit delivers reliable low-voltage power in a rugged metal enclosure suitable for both commercial and residential installations.

Key Features:

• 40 VA Split-Bobbin Transformer — Single transformer rated at 40 VA for efficient, low-noise power conversion
• 120 VAC to 24 VAC Output — Steps down standard line voltage to UL Class 2 low-voltage output
• UL Class 2 Listed — Meets UL Class 2 safety requirements for low-voltage power sources
• 10 Amp Main Breaker — Integrated circuit breaker on the input side for overload protection and easy on/off switching
• External Terminal Strip — Secondary output connections made via external terminal strip for clean, accessible wiring
• Red LED Output Indicator — Visual confirmation of active 24 VAC output at the Class 2 terminals
• Metal Enclosure — Durable steel housing with internal high-voltage wiring compartment to isolate line-voltage connections
• 120 VAC Convenience Outlet — Includes an auxiliary 120 VAC grounded outlet for powering additional equipment

The PSH40AB10 is part of Functional Devices' PSH Series of enclosed 24 VAC Class 2 power supplies, engineered for use in temperature control systems, industrial controls, and building automation. The alternate part number for this unit is PSH40ANB10.