Part Number: B400550FGRR Manufacturer: Mors Part Series: B40055 B400 550 FG 1 RR. Instantaneous Relay, 550 VDC, Keying FG. RR = special spec for pick up & drop out values & higher coil to contacts insulation. This relay has reinforced insulation to achieve dielectric withstand of 3900Vac 50Hz 1 min. Pick-up voltag Available to Order Quantity × 1 Item added to your Quotation Basket B400550FGRR Mors Your Quotation Basket Items: 2