The SEL 3505 is the newest, and low-end version of the RTAC. It supports Modbus, DNP3, IEC 61950, and GOOSE…
Category Archives: SEL
SEL 3555 RTAC
The SEL 3555 on the high end of the RTAC family. It’s an RTU supporting Modbus, DNP3, IEC 61950, and…
SEL-451 Recloser
Most common recloser used for transmission-connected PV solar sites. Everything it does, it does well. It’s fast responding protection equipment…
SEL 651R Recloser
This is the most common recloser used for distribution-connected PV solar sites. Everything it does, it does well. It’s fast…
SEL-751 A
The SEL-751 A is a device for feeder protection for industrial utility applications. It uses Modbus, DNP, IEC, as well…
SEL-551
Similar to 501, the SEL 551 also provides a recloser relay, mostly for utility applications. It uses Modbus and IEC…
SEL-501
The SEL-501 is an overcurrent protection relay, often referred to as a universal overcurrent relay. This device can protect two…
SEL-701
SEL-701 is a motor protection relay. We often find the SEL-701 in more industrial applications, and some utility applications at…
SEL-700G
The 700G is a generator protection relay mostly used in emergency power supply system applications. This device supports Modbus and…
SEL-3530
Real time automation controller, also known as RTAC, is popular in substation applications and industrial control applications. It provides similar…
