Cleveland Controls DDP-106-299X Switch

The Cleveland Controls DDP-106-299X is a professional-grade air flow switch engineered for precision monitoring in commercial and industrial HVAC systems. This differential pressure switch features a dual-switching design with two independently adjustable SPDT snap-acting switches mounted on a single foot bracket. This configuration allows technicians to establish an adjustable "dead band" for complex control circuits requiring distinct high and low actuation points. Built with Cycolac T4500 thermoplastic and a durable silicone diaphragm, the DDP-106-299X is designed for proving air flow or sensing pressure differentials in energy management applications. It operates reliably within a temperature range of -40°F to 176°F and supports an electrical rating of 15A non-inductive at 277 VAC. The unit includes three 1/4" OD sample line connections—one common high-pressure inlet and two separate low-pressure inlets—facilitating versatile installation for positive, negative, or differential pressure sensing without the need for additional bulky hardware.

• Independent Adjustability: Dual SPDT switches allow for precise, separate calibration of two different set points on a single device.
• High Compatibility: Integral compression ferrule and nut fittings accept 1/4" OD rigid or semi-rigid copper, aluminum, or plastic tubing.
• Rugged Construction: Plated housings and a robust mounting bracket ensure stability in high-vibration environments.
• Versatile Application: Ideal for monitoring filter status, fan operation, and air flow proving in sophisticated energy management systems.
• Technical Reliability: UL and CSA listed with a mechanical life exceeding 100,000 cycles at maximum rated load.

How do I mount the DDP-106-299X for accurate sensing?
To achieve the lowest specified set point, always mount the switch with the diaphragms in a vertical plane. Avoid installing the device with sample line connections facing upward to prevent moisture or debris accumulation.

Can this switch be used for both positive and negative pressure?
Yes. For positive pressure, connect to the "H" inlet and leave the "L" inlet open to the atmosphere. For negative pressure, connect the sample line to the "L" inlet while keeping "H" open.

What is the electrical capacity of the snap switches?
Each switch is rated for 300 VA pilot duty at 115 to 277 VAC, or 15 Amps non-inductive, providing sufficient capacity for most industrial control circuits.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.