ABB OTS403 Over Temperature Switch

ABB OTS403 Terminal Shroud is a gray plastic long-terminal accessory designed for use with the ABB OT400 three-pole, non-fusible disconnect switches. It encloses the terminal area for all three poles, giving a tidy, protected wiring path and helping reduce exposure to live conductors during installation and servicing. Marketed specifically for the OT400 family, the OTS403 appears in distributor catalogs as the Terminal Shroud for 3-Pole OT400 devices, underscoring its role as an integrated accessory rather than a standalone switch. By extending the terminal coverage, the OTS403 supports safer wiring practices in control panels and process enclosures, and it complements the standard OT400 wiring harness and mounting arrangements. Available through multiple electronics and electrical distributors, this part is referenced under ABB’s OT400 accessory lineup and is commonly issued with or compatible alongside the OT400 non-fusible disconnect switch assemblies.