The Carrier HH12ZB250 Limit Switch is a critical safety component designed for high-temperature monitoring in HVAC furnace plenums and heat exchanger compartments

Enhanced System Reliability: Foundational for maintaining proportional control in large-scale steam and water HVAC systems

This replacement piece is built for technicians who prioritize factory-standard performance and safety when performing routine maintenance or complete system overhauls

While the electrical specs may match other systems

BASO K16BT-18 Thermocouple The Carrier HH12ZB250 Limit SwitchThe BASO K16BT 18 is a heavy duty, 18 inch Husky high performance thermocouple engineered for intensive use in standing pilot ignition systems. As a veteran grade component, it delivers a precise 25 35 mV open circuit range, ensuring reliable millivolt output for commercial and residential gas valves. This model is technically identical to the BASO K16BT 18H and features an 11 32 32 male nut connector for secure thread in thermocouple installation.