The Lennox 43G59 Fuse Block is a high-grade 3-pole electrical safety component designed for heavy-duty HVACR applications

or 12A49 vent limiting device

Its robust control board sub-assembly architecture ensures high-fidelity signal processing

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this is a terminal board used for physical wire connections and signal distribution

Cleveland Controls DDP-106-380 Sensing Switch 320735-701 The Lennox 43G59 Fuse BlockThe Cleveland Controls DDP 106 380 Sensing Switch is a heavy duty, industrial grade Dual Air Pressure Sensing Switch engineered for precise proving in high demand HVAC and energy management systems. This versatile component features two independently adjustable SPDT snap acting switches mounted on a single foot bracket, allowing technicians to establish a customized "deadband" for complex control circuits. With an operating range of 0. 05" to 2. 0" w.