12.5A–20A | 7.5kW | 415V | 3-Pole | D.O.L Starter
The SIEMENS 3TW42901AB78 is a high-capacity motor protection circuit breaker designed for motors up to 7.5kW. Optimized for Direct-On-Line (D.O.L) starter applications, it offers reliable protection against overload and short circuits in 415V 3-phase systems.
Adjustable current range: 12.5A to 20A
Supports motor power up to 7.5kW
Rated operating voltage: 415V AC
3-pole design ensures full-phase protection
Ideal for D.O.L (Direct-On-Line) starter circuits
Built-in overload and short-circuit protection
Compact, durable construction for panel mounting
Fully compliant with IEC safety and quality standards