{"product_id":"siemens-6ep1961-3ba21-sitop-pse202u-redundancy-module","title":"Siemens 6EP1961-3BA21 SITOP PSE202U 24V\/40A Redundancy Module","description":"\u003cp\u003eThe Siemens 6EP1961-3BA21 is a SITOP PSE202U redundancy module that decouples two 24 V DC SITOP power supplies, each contributing up to 20 A, to a combined 40 A output. It signals status through relay contacts and front LEDs, reaches 96.6% efficiency, and mounts on a 35 mm DIN rail in an IP20 enclosure measuring 70 x 125 x 120 mm.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6EP1961-3BA21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSITOP PSE202U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRedundancy module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V DC, range 24-28.8 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V DC (Vin minus approx. 0.5 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current (rated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 A, max. aggregate current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e96.6%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Loss (typ.)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e34 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNo-Load Power Loss (max)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStatus Signal Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIsolated relay contact, 8 A \/ 240 V AC, 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGalvanic Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSELV \/ ES1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Class IP\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmbient Temperature (operation)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-25 °C to +60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMTBF at 40 °C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 471 654 h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN rail EN 60715 35x7.5\/15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70 x 125 x 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eCertifications \u0026amp; Standards\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCE\u003c\/li\u003e\n\u003cli\u003eEAC\u003c\/li\u003e\n\u003cli\u003eABS\u003c\/li\u003e\n\u003cli\u003eDNV\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eThis redundancy module accepts two independent 24 V DC feeds and isolates them from each other so a fault or maintenance shutdown on one supply does not pull down the other - pair it with two SITOP power supplies each sized to carry the full 40 A load alone for true N+1 redundancy, not two units each rated for half the load. The isolated relay contact reports loss of either input below the 20-25 V adjustable threshold, giving a hard-wired signal for a PLC or alarm panel independent of any fieldbus. At 96.6% efficiency and a 6.47 million hour MTBF at 40 °C, the module itself is not the weak point in a redundant supply chain.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eUsed to combine two SITOP 24 V DC power supplies into a redundant 40 A DC bus for PLC racks, remote I\/O, and other loads where a single power-supply failure must not interrupt control power.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960763965723,"sku":"6EP1961-3BA21","price":151.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6ep1961-3ba21-sitop-pse202u-redundancy-module.png?v=1789679393","url":"https:\/\/stoklink.com\/products\/siemens-6ep1961-3ba21-sitop-pse202u-redundancy-module","provider":"Stoklink","version":"1.0","type":"link"}