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Siemens 3RB1900-0B-1 — Overload Relays

Siemens 3RB1900-0B-1 Overload Panel, Lifecycle Current

MPN3RB1900-0B-1

Siemens 3RB1900-0B-1 overload panel, lifecycle stage current, for motor protection and overload monitoring in industrial control panels.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Product details

Integration Note

It interfaces with a contactor to form a motor starter, and its trip class and current range must match the motor full-load amps and starting characteristics. Verify the specific current setting range and trip class from the full datasheet before committing the BOM line.

Frequently asked questions

What is 3RB1900-0B-1 used for?

The 3RB1900-0B-1 is an overload panel used for motor overload protection in industrial control panels, typically as part of a motor starter assembly with a contactor.

Who supplies 3RB1900-0B-1 and how is it quoted?

The 3RB1900-0B-1 is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time.

MPN
3RB1900-0B-1