Functional Devices RIB01P30-NONC Relay 340155-7026 its specific 35-degree pitch is

its specific 35-degree pitch is engineered for Reznor airflow requirements

Key Benefits for Technicians Direct OEM Compatibility: Verified replacement for HC21ZE121 and HC21ZE121A models

the A19ADB-31 is engineered for electrical compatibility across standard HVACR power configurations

making it suitable for standard duct environments

you may need the "A" (Low Height) chassis variant

Functional Devices RIB01P30-NONC Relay 340155-7026 its specific 35-degree pitch isThe Functional Devices RIB01P30 NONC Relay is a heavy duty, field proven solution for contractors managing high current HVACR and industrial automation loads. This 30A DPST relay features a dual pole configuration with one Normally Open (NO) and one Normally Closed (NC) contact set, providing versatile switching logic for energy management and fire safety systems. Housed in a NEMA 1 plenum rated enclosure, it is engineered for surface, nipple, or