Penn Controls A19ABA-40C Line Voltage Mechanical Thermostat

Product Description

The PENN CONTROLS A19ABA-40C is a single-stage, line voltage mechanical thermostat designed for precise temperature control across a wide range of HVAC and refrigeration applications. It uses a liquid-filled sensing element that is environmentally friendly and maintains a constant differential throughout the entire operating range. Rated for 120 to 277 VAC, this control is built for reliability in demanding commercial and industrial environments. Its compact alloy steel enclosure keeps the unit protected while fitting into tight equipment spaces. HVAC technicians and controls specialists are the typical installers of this device.

The A19ABA-40C is suited for single-stage temperature control in commercial HVAC systems, refrigeration equipment, and industrial process applications requiring line voltage switching. Its wide temperature range capability and choice of sensing element styles make it adaptable to a variety of system configurations. The fixed or adjustable differential option gives technicians flexibility when setting up control sequences for unit coolers, condensing units, or air handling equipment.

Key Features

• Single-stage temperature control with liquid-filled sensing element
• Wide temperature ranges available to suit varied application requirements
• Constant differential maintained throughout the entire operating range
• Fixed or adjustable differential options for flexible setpoint control
• Compact alloy steel enclosure for durable, space-efficient installation
• Variety of sensing element styles available for different mounting configurations

Compatibility

Designed as an OEM-style replacement or direct-install line voltage mechanical thermostat for single-stage temperature control applications operating on 120 to 277 VAC systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or controls specialist familiar with line voltage wiring practices and applicable NEC requirements. Disconnect and lock out all power to the circuit before removing the existing control or making any wiring connections. Verify the supply voltage matches the rated 120 to 277 VAC range before energizing. Mount the sensing element according to the manufacturer's guidelines for the specific sensing style used to ensure accurate temperature response.