สินค้าหมดชั่วคราว (Temporarily out of stock) ไม่พร้อมจำหน่าย
The Siemens Digital monitoring relay, speed monitoring from 0.1 to 2200 rpm overshoot and undershoot, 24 to 240 V AC/DC supply voltage at 50 to 60 Hz DC and AC without galvanic isolation to measuring circuit ON-delay time 1 to 900 seconds, tripping delay time 0.