Siemens 3RB3026-1QE0 Electrical Overload Relay

Siemens 3RB3026-1QE0 electronic overload relay provides motor protection for three‑phase drives with a rated current range of 6 to 25 A and is designed for mounting on Siemens S0‑size contactors. As part of the SIRIUS 3RB family, it delivers precise electronic overload sensing with a Class 10E trip class and supports manual‑automatic reset modes for flexible restart control. It uses spring‑type terminals for both the main circuit and the auxiliary circuit, simplifying wiring in control panels and ensuring secure connections. The relay includes a single normally open and a single normally closed auxiliary contact for signaling and interlocking with control circuits. Standby power consumption is low, specified at a typical 1.7 W, helping minimize heat in compact enclosures. Electrical ratings extend to insulation up to 690 V and withstand surge events up to 6 kV, aligning with common industrial three‑phase systems. This 3RB3026-1QE0 variant is one of several 3RB30x overload relays, distinguished by its current range and the accompanying NO/NC auxiliary contact, and it is commonly offered by Siemens through Industry Mall and distributor networks for upgrades or new installations.