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The Siemens 3TH2031-0BB4 is a 4-pole contactor relay designed for industrial control applications. It features 3 normally open (NO) and 1 normally closed (NC) contacts, operating on a 24 VDC control voltage. The device complies with EN 50011 standards and is equipped with screw terminals for secure connections. Suitable for DIN rail or panel mounting, it supports a maximum operating current of 4A at 230V AC. The relay operates within an ambient temperature range of -25°C to +55°C and offers IP20 protection on the front. Please note that this product has been discontinued as of June 1, 2023, and the recommended successor is the SIRIUS 3RH21 series.
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