What the buyer is sourcing
The ABB 1SAZ211401R1038 is a solid state overload relay sitting in the protection category alongside circuit breakers and fuses, and its listing carries a Class 20 trip designation — the slower trip curve typically paired with standard-duty motor loads where a moderate inrush is expected before the relay settles to its running current.
Where this part belongs on a panel
In the panel-builder's mental map, this device sits downstream of the contactor and upstream of the motor — its job is to watch running current via the integrated CTs and trip the contactor coil when the heat-build-up model crosses the Class 20 threshold, so the contactor handles the actual breaking duty and the relay handles the decision. ABB's solid-state overload line is designed to mount directly beneath the matching contactor frame and accept the same line and load conductors, which is what keeps the swap path short when the device itself is what failed and not the contactor above it.
Sourcing posture
The ABB brand mark is present on this order code with no production-status entry recorded, so active manufacture versus last-time-buy status cannot be asserted from the available record. The working posture is to quote this exact part to order against an RFQ and let the supply side confirm the channel at the time of the buy.