{"product_id":"siemens-3rr2242-2fw30-current-monitoring-relay","title":"Siemens 3RR2242-2FW30 Current Monitoring Relay","description":"\u003cdiv\u003e\u003cp\u003eSiemens 3RR2242-2FW30 is a SIRIUS current monitoring relay that mounts on a 3RT2 contactor (size S0) to provide digitally adjustable monitoring of current and phase status for multi‑phase loads. It supports 4–40 A apparent\/current monitoring over a 20–400 Hz supply window and runs from 24–240 V AC\/DC, delivering one change‑over contact plus one semiconductor output for alarm and warning; separate settings for warning and alarm thresholds, with optional fault buffering, let you tailor protection to your application. The unit detects current overshoot\/undershoot, phase failure, cable break, and phase sequence faults, with ON‑delay 0–99 s, spurious peak suppression 0–30 s, and a fault pause of 0–300 min to manage nuisance trips. Electrical ratings include insulation up to 690 V and surge resistance up to 6 kV, with IP20 protection and rugged DIN‑rail mounting suitable for control cabinets; mechanical specs list shock resistance around 15 g\/11 ms and vibration resistance around 10 g. As part of the 3RR2 family, it can plug into Siemens SIRIUS 3RT2 assemblies or operate as a standalone monitoring device for the entire driven process, offering precise current monitoring and reliable fault signaling through its distinct alarm and warning outputs.\u003c\/p\u003e\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"New","offer_id":46268102082794,"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-3rr2242-2fw30-current-monitoring-relay","provider":"GTG Hardware","version":"1.0","type":"link"}