SR489-P5-HI-A20

About the SR489-P5-HI-A20

SR489-P5-HI-A20 is a generator management relay that is manufactured by GE Multilin for the 489 series. This relay has 5 A phase CT secondaries. The HI control power is 90-300 VDC and 70265 VAC at 48-62 Hz. The analog outputs on this relay are 4 to 20 mA. This relay has a basic display. When the relay is energized, the relay contacts are unsafe to touch. It is the customer’s responsibility to ensure proper insulation levels if the output relay contacts are required for low voltage accessible applications. The fuse current rating is 2.5 A. The fuse type is 5x20mm HRC SLO-BLO Littelfuse, and the fuse model is 215-02.5.

The order code for this series tells the user a few details about the part. The 489 indicates the series that this part comes from. The next two digits are the phase current inputs, which are either P1 (1 A phase CT secondaries) or P5 (5 A phase CT secondaries). The next two digits are the control power, which are either LO (20-60 VDC and 20-48 VAC at 48-62 Hz) or HI (90-300 VDC and 70-265 VAC at 48-62 Hz). The next two or three digits are the analog outputs, which are either A1 (0 to 1 mA analog outputs) or A20 (4 to 20 mA analog outputs). The next digit is the display, which is either blank (basic display), E (enhanced display with a larger LCD), or T (enhanced display with Ethernet 10Base-T). The next digit is the harsh environment protection, wherein H is the chemical environment conformal coating.