International Environmental 70665406 Relay

The International Environmental 70665406 Relay is an OEM replacement part engineered for high-reliability switching in fan coil units and industrial HVACR systems. As a DPDT (Double Pole Double Throw) relay, it provides a versatile solution for controlling two separate circuits with a single 24V AC coil signal. This heavy-duty component features normally open (N/O) contacts rated at 30A and normally closed (N/C) contacts rated at 3A, making it ideal for motor control, resistive heating elements, and safety interlock applications where handling diverse amperage loads is critical. Its rugged construction ensures stable performance during high-frequency cycles, maintaining electrical continuity in demanding environments.

Veteran technicians rely on the International Environmental 70665406 for its precise fit and technical compatibility with IEC fan coil models, including the CBF series. Whether managing blower speeds or isolating control circuits, the 24V switching relay offers the fast response time needed to protect sensitive electronic components. By utilizing genuine OEM HVAC parts, contractors ensure the system operates within its original design parameters, avoiding the voltage drop or arcing issues often associated with low-quality aftermarket alternatives.

• High-Amperage Capacity: Industrial-grade 30A N/O contacts are built to handle heavy inductive loads such as blower motors and compressors.
• Versatile DPDT Logic: The Double Pole Double Throw configuration allows for simultaneous switching of two independent circuits, perfect for complex HVAC sequencing.
• Reliable 24V Control: Engineered to operate on standard 24VAC control voltage, ensuring seamless integration with existing low-voltage thermostats and controllers.
• Compact and Durable: Designed for easy mounting in tight control cabinets, the 70665406 relay withstands the thermal stress of continuous operation.

• What are the primary applications for this 24V DPDT relay? This relay is commonly used in fan coil units to switch between high and low blower speeds or to energize auxiliary electric heat strips.
• Can this relay replace a standard SPDT relay? Yes, the DPDT 70665406 can be used in place of an SPDT relay by utilizing only one set of poles, provided the amperage ratings and coil voltage match.
• How do I troubleshoot if the relay is stuck? Use a multimeter to check the continuity across the normally closed (N/C) and normally open (N/O) terminals when the 24V coil is both energized and de-energized; any deviation from 0.0 ohms or an open line (OL) in the wrong state indicates a failure.

This item is not eligible for free shipping.

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.