Key Benefits Engineered for High-Pressure: UL recognized to 700 psi at 250°F

When your service call involves a noisy HVAC unit or damaged safety grilles

When diagnosing HVAC communication errors or control circuit faults

Constructed from high-grade EPDM rubber and reinforced with high-tensile synthetic cords

If your original application uses a different bracket

Siemens Industrial Controls 3RH2921-1DA20 Switch R-407A Key Benefits Engineered for High-Pressure:The 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