Uploaded July 2025 | Updated September 2026, 2 weeks ago
Learn about the innovative White-Rodgers SureSwitch contactor by Copeland (Model 49M11-843) and why it's a game-changer for HVAC technicians! This multi-voltage contactor can work with 24V, 120V, 208V, or 240V systems using a unique design that powers the coil from line voltage while using the control signal just as a "call" to energize. This eliminates voltage drop issues from long wire runs or undersized control cables that can cause chatter in traditional contactors. Perfect for air conditioning, refrigeration, and pool heat pump applications. Available at quality HVAC wholesalers.
Learn about the innovative White-Rodgers SureSwitch contactor by Copeland (Model 49M11-843) and why it's a game-changer for HVAC technicians! This multi-voltage contactor can work with 24V, 120V, 208V, or 240V systems using a unique design that powers the coil from line voltage while using the control signal just as a "call" to energize. This eliminates voltage drop issues from long wire runs or undersized control cables that can cause chatter in traditional contactors. Perfect for air conditioning, refrigeration, and pool heat pump applications. Available at quality HVAC wholesalers.
