Downloads
Manufacturer information
ABB has worked in the energy industry for over 130 years, supplying electrification and automation technology to power transmission and distribution networks, industrial energy systems and renewables. Its low-voltage portfolio covers current transformers, protection and switching devices and EV charging infrastructure, chosen for measurement accuracy, long service life and full IEC compliance.
Product description
The ABB OTC125G3-4BS (1SCA162750R1001) is a 4-pole manual change-over switch from the OT Plus switch-disconnector series, rated 125A at AC-21A/AC-22A (415V and 690V) for switching between two supply sources — typically grid and generator or grid and backup. It's a base-mounted, DIN-rail mountable unit with a front-operated, direct-mounted knob handle that is padlockable, and a shaft that can be extended for external operation. It uses inbuilt screw terminals (up to 70mm² Cu) and accepts up to 2 NO + 2 NC auxiliary contacts, with a switchable fourth pole (simultaneous or late-break/early-make). Rated to 800V insulation with 25kA conditional short-circuit current (80A fuse), 8kV impulse withstand, and Front IP20 protection, it complies with IEC60947-3. Made in Finland.