The 3RB1262-0LG11: The 200...820 A range covers large-frame motors — think 90 kW to 400 kW at 400 V. The Class 5...30 adjustment lets you dial the trip curve to match the motor's thermal damage curve; Class 10 is the default for standard induction motors, Class 20 for high-inertia loads like fans or centrifuges. Size S10/S12 means it mounts on the SIRIUS S10 or S12 contactor or individually on a busbar system — the main circuit is busbar-connected, not screw-clamp, so panel layout needs to account for busbar runs.
Siemens 3RB1262-0LG11 Overload Relay, 200-820A, Discontinued
MPN3RB1262-0LG11
Siemens SIRIUS 3RB1262-0LG11 overload relay, 200...820 A, size S10/S12, Class 5...30, discontinued product.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Product details
Frequently asked questions
Where can I buy 3RB1262-0LG11 and get a price?
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ with your quantity and target lead time. No stock count or firm price is published because the supply is lot-dependent.
What is the closest alternative to 3RB1262-0LG11 in the SIRIUS family?
Siemens has moved the SIRIUS 3RB line through several revisions. The direct functional replacement is typically the 3RB30 or 3RB31 series for the same size S10/S12 frame, but pin-compatibility and busbar arrangement must be verified against the existing panel layout — the mounting footprint and busbar connection pattern changed between generations. No single order code is a drop-in without checking the mechanical interface.
MPN
3RB1262-0LG11