KMC Controls RCC-1503 Relay

The KMC Controls RCC-1503 is a professional-grade adjustable reversing relay designed for pneumatic control systems requiring a 9 psi crossover point. As an in-line pneumatic relay, it is engineered to provide a reversed proportional output signal based on a source input, making it essential for HVAC reverse acting control sequences. The unit features a factory-calibrated 9 psig (62 kPa) input/output crossover, ensuring precision in pneumatic signal reversal for heating and cooling transitions.

Constructed from UL 94 HB flame-retardant plastic, this high-capacity relay supports a maximum supply pressure of 30 psig and delivers a substantial air capacity of 1728 scim at 20 psi. Contractors can utilize the integrated bias adjustment feature to retard or advance the output by +/- 15 psig (103 kPa), allowing for field-level tuning of sequence timing. Designed for high-reliability industrial environments, the RCC-1503 requires clean, dry control air to maintain pneumatic logic integrity and optimize component longevity in complex air-handling applications.

• Precise Signal Reversal: Specifically calibrated for 9 psi crossover applications to ensure accurate reverse acting control signals.
• Field Adjustability: Integrated bias adjustment allows for a +/- 15 psi range to fine-tune output responses for specific system requirements.
• High Air Capacity: Capable of delivering 1728 scim @ 20 psi, supporting rapid actuator response times in large-scale pneumatic loops.
• Space-Saving In-Line Design: Lightweight 3.5 oz construction permits direct in-line mounting without the need for additional support brackets.
• Industrial Durability: Flame-retardant ABS housing with 3/16" nipples compatible with standard 1/4" OD polyethylene tubing.

• What is the primary function of a 9# crossover relay? It reverses a proportional signal so that as input pressure increases, output pressure decreases, crossing over at exactly 9 psi.
• Can this relay be mounted in any orientation? Yes, the RCC-1503 is not position-sensitive, making it ideal for tight retrofit spaces within control panels.
• How is the bias adjusted on the RCC-1503? A manual adjustment knob on the device allows technicians to shift the output pressure relative to the input for sequencing multiple devices.

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.