What the order code resolves to
The ABB 1SBL156001R2122 sits in the Electrical Contactors sub-category under Contactors and Starters, which itself lives under the broader Circuit Breakers, Fuses & Protection tree — the same panel-side class used for switching motor and resistive loads in control assemblies. The listing carries no current, coil voltage, pole count, or frame figure on this page, so any fit call against a specific load profile has to come from the device's own nameplate data and not from this catalog line.