Siemens Industrial Controls 3RA2934-2B Interlock 318518-761 If your specific appliance requires

If your specific appliance requires a blower lead-time or combustion chamber clearing prior to ignition

High-Torque Performance: Engineered for 24V AC/DC systems to provide dependable on/off control in high-demand hydronic loops

providing flexibility for tight mechanical room installations

is a heavy-duty single pressure switch designed specifically for refrigeration and air conditioning systems

the thermal element can withstand a maximum temperature of 471°F

Siemens Industrial Controls 3RA2934-2B Interlock 318518-761 If your specific appliance requiresThe Siemens 3RA2934 2B mechanical interlock is a critical safety component for field assembled reversing contactor combinations. Designed to integrate seamlessly within the SIRIUS modular system, this side mount unit provides a physical lockout between two power contactors. It serves as a secondary failsafe, ensuring that both contactors cannot be engaged simultaneously, which prevents catastrophic phase to phase short circuits in motor control