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including R404A and R507
the included CL2P-rated cable is specifically designed for use in plenum spaces
ensure the power is disconnected before removing the old coil
the CK-41F provides the necessary draft proving functionality required by code to prevent backdrafting and ensure proper flue gas evacuation in residential and light commercial atmospheric gas applications
the 331709-798 is the official direct replacement for 331709-772
Siemens Industrial Controls 3RH2921-1DA20 Switch R-22 including R404A and R507The Siemens SIRIUS 3RH2921 1DA20 is a high performance lateral auxiliary switch designed specifically for side mounting on size S0 and S2 contactors. This 2 pole block features a 2NO (Normally Open) contact configuration, providing reliable signaling and control circuit expansion for 3RT2 power contactors and 3RH2 contactor relays. Engineered for heavy duty industrial and HVACR environments, the 3RH2921 1DA20 utilizes secure screw terminals to ensure
