{"product_id":"siemens-3ra1921-1b-connecting-module","title":"Siemens 3RA1921-1B Connecting Module","description":"\u003cdiv\u003e\u003cp\u003eThe Siemens 3RA1921-1B Connecting Module is a dedicated link module (El. A. Mech.) that electrically and mechanically links 3RV1.2 circuit-breakers with 3RT1.2 DC actuators for synchronized multi‑unit operation. Designed for DC actuation, it is typically sold in packs of 10 pieces (1 PE = 10 items). As the official Siemens part 3RA1921-1B, it supports link functionality within 3RV1.2\/3RT1.2 configurations, with size designations for the circuit-breaker and contactor listed as S0.\u003c\/p\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"New","offer_id":46268087730410,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-017.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/siemens-3ra1921-1b-connecting-module","provider":"GTG Hardware","version":"1.0","type":"link"}