Cleveland Controls DDP-109-436 Air Pressure Sensing Switch, Dual Setpoint, 120-277Vac

Description

Cleveland Controls DDP-109-436 Air Pressure Sensing Switch

The Cleveland Controls DDP-109-436 is a dual-setpoint air pressure sensing switch engineered for precise differential pressure monitoring in HVAC and building automation applications. With a wide sensing range and dual contact-change setpoints, this switch delivers reliable performance across a broad range of air handling and duct pressure control scenarios.

Key Features

• Dual differential pressure setpoints for both increasing and decreasing pressure events
• Wide sensing range: .05″ ± .02″ to 2″ w.c.
• Changes contacts on decreasing pressure at .20″ w.c. ± .02″ w.c.
• Changes contacts on increasing pressure at 1.35″ w.c. ± .05″ w.c.
• Broad voltage compatibility: 120V–277Vac
• Maximum pressure rating: 1/2 PSI
• Ideal for air handling units, duct pressure monitoring, and fan proving applications

Specifications

• SKU: DDP-109-436
• Brand: Cleveland Controls
• Sensing Range: .05″ ± .02″ to 2″ w.c.
• Decreasing Pressure Setpoint: .20″ w.c. ± .02″ w.c.
• Increasing Pressure Setpoint: 1.35″ w.c. ± .05″ w.c.
• Supply Voltage: 120V–277Vac
• Maximum Pressure: 1/2 PSI

Application

The DDP-109-436 is well-suited for commercial and industrial HVAC systems requiring dual-threshold air pressure monitoring. Its dual setpoint design allows the switch to respond independently to both rising and falling pressure conditions, making it an excellent choice for fan proving, filter monitoring, and airflow verification in air handling units and ductwork systems.