MARS 43313 Cycling Switch

The MARS 43313 Manual Reset Cycling Switch is a heavy-duty HVAC pressure control designed for precise condenser fan management in R-410A systems and other high-pressure applications. Engineered with a 410 PSI open on rise setpoint, this SPST switch provides critical high-limit protection by interrupting the circuit when system pressures exceed safe operational thresholds. The manual reset feature ensures that technicians can investigate the root cause of high-pressure events before the system resumes operation, preventing repetitive cycling and potential compressor damage. Built for direct tubing mounting, it features a 1/4 inch female flare SAE connection with a built-in deflator for easy installation. The tamper-proof construction and UL/CSA recognition make it a reliable choice for commercial and residential refrigeration fan cycling. Rated for 6 amps at 24-240V, the MARS 43313 integrates seamlessly into diverse control circuits, offering a robust solution for maintaining stable head pressure in low ambient conditions.

• Field Reliability: High-pressure 410 PSI cut-out designed specifically for the demands of R-410A refrigeration and air conditioning systems.
• Enhanced Protection: Manual reset cycling switch logic prevents automatic restarts, forcing a professional diagnostic check after high-pressure trips.
• Streamlined Installation: Direct mounting via a 1/4" SAE female flare requires no additional mounting brackets and includes 18-inch leads for flexible wiring.
• Rugged Build: Industrial tamper-proof construction ensures setpoints remain accurate and protected from environmental interference.

• What is the reset type for the MARS 43313? This is a manual reset switch; it will not close the circuit automatically once the pressure drops. A technician must manually depress the reset button.
• Is this switch compatible with R-410A? Yes, the 410 PSI open rating is specifically calibrated for the operating pressures typically found in high-pressure R-410A systems.
• Can this be used for low-pressure cut-outs? No, this is an "open on rise" switch intended for high-pressure fan cycling or safety limit applications.

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.