Siemens Industrial Controls 3RH1921-1EA11 Switch L99H008 refer to the standard ND

refer to the standard ND series specifications

ensuring compliance with ASHRAE 90

000V arc for consistent ignition in industrial boilers and furnaces

always use a wet rag or heat-sink paste to protect the internal components and diaphragm from heat damage

Can this be used in a totally enclosed application

Siemens Industrial Controls 3RH1921-1EA11 Switch L99H008 refer to the standard NDThe Siemens 3RH1921 1EA11 is a side mounted auxiliary contact block designed for the seamless expansion of SIRIUS 3RT1 contactors and 3RH1 contactor relays. Engineered for industrial motor control applications, this 2 pole auxiliary switch provides a 1NO 1NC contact configuration (1 Normally Open and 1 Normally Closed), allowing for instantaneous signaling and interlocking within your control circuit. This module is compatible with SIRIUS frame sizes