Industrial TB350 50A 3-Pole 240 V Circuit Breaker Potential Transformer

The Industrial TB350 is a rugged 50 A, 3-pole circuit breaker designed for demanding 240 V three-phase power systems. Built for industrial environments, it provides reliable overcurrent protection while ensuring all phases disconnect simultaneously for safe, clean power shutdowns in critical equipment, motors, and control circuits.

Why the TB350 stands out

Designed to meet the needs of modern power distribution, this TB350 unit combines robust electrical protection with compatibility for protective relay and metering setups thanks to its potential transformer integration concept. It’s not just about breaking the circuit—it’s about accurate sensing, safer operation, and smoother energy management in busy facilities.

Key specifications you’ll rely on

• Current rating: 50 A
• Poles: 3
• Voltage rating: 240 V
• Configuration: Three-phase protection with the ability to connect to a potential transformer for measurement and relay input

Ideal use cases

• Three-phase motor circuits (pumps, conveyors, compressors) in manufacturing and processing plants
• Industrial power distribution panels requiring reliable, fast-acting overcurrent protection
• Systems that benefit from integrated voltage/current sensing through a potential transformer for protective relays and energy meters

What problems it solves

• Prevents equipment damage from short circuits and sustained overloads by cutting power across all phases
• Enhances safety in distribution panels by ensuring complete phase isolation during trips
• Facilitates precise monitoring and protection schemes when paired with a potential transformer

Installation and maintenance at a glance

• Install by qualified electricians following local codes and standards for 240 V three-phase systems
• Conductor sizing and protective wiring should align with 50 A rating and panel specifications
• Periodic inspection of terminals and trip performance helps maintain reliable protection over time

Why choose this TB350 • A practical, purpose-built choice

In environments where uptime matters, this 50 A, 3-pole 240 V breaker delivers dependable protection with the added benefit of potential transformer compatibility for enhanced monitoring. It’s a concrete step beyond basic breakers, offering concrete advantages in fault detection, energy management, and safety for industrial power systems.