The ABB TMP3SB4R is a modular main breaker module designed for metering applications, offering a reliable 400 Amp capacity. This unit supports both single-phase, 3-wire 120/240V AC setups and 3-phase, 4-wire 208Y/120V AC systems, making it versatile enough for a variety of electrical configurations. It features a 100 kA interrupting rating and comes with the breaker included, ready to handle serious load demands. The TMP3SB4R accommodates line and load lugs with wiring options from 3 x 3/0 AWG up to 500 MCM, and it provides flexibility with either top or bottom feed connections. If you’re looking to beef up your power distribution setup, this breaker module is a solid choice. This product is available through BSP Automation, ensuring you have trusted access to quality industrial components.