Motor protection circuit breaker – what it does and how it differs from a thermal overload relay

What it is

The motor protection circuit breaker combines overload and short-circuit protection, specifically tailored for motors.

Difference from a thermal relay

A simple thermal relay mainly protects against prolonged overcurrent, while a motor protection circuit breaker also offers short-circuit protection.

What to check

• Nominal motor current.
• Setting range.
• Breaking capacity.

Important

The setting is based on the motor's data and the specific application.