Eaton / Cutler-Hammer FAZ-D30/3-RT Miniature Circuit Breaker

The "D" indicates a D-curve trip characteristic. D-curve breakers have a magnetic trip point of 10 to 20 times the rated current, making them ideal for high-inductive applications with significant inrush currents, such as motors, transformers, and power supplies.

The "RT" suffix indicates this breaker is equipped with ring-tongue terminals rather than standard box lugs. This provides a highly secure connection often required in demanding industrial, transportation, or semiconductor applications.

Because of its high magnetic trip point, it is typically used for 3-phase industrial control panels, motor control circuits, power supplies, and external HACR (heating, air conditioning, and refrigeration) equipment that experience high startup inrush currents.

This miniature circuit breaker snaps directly onto a standard 35mm DIN rail. It is designed with captive screws that cannot be lost during installation, streamlining the wiring process for panel builders.

Yes, this breaker supports reverse feeding. Power can be supplied to either the line or load side terminals without affecting the device's performance or protection capabilities.

Yes, it features a current-limiting design that interrupts fault currents within one half-cycle. This fast short-circuit interruption reduces peak let-through energy, offering superior protection for downstream circuit components.

Yes, it features a color-coded indicator that provides immediate visual confirmation of the device status. It displays green for OFF and red for ON, ensuring clear isolation function visibility.

No, the FAZ-D30/3-RT features a trip-free design. The breaker will trip and interrupt the circuit during an overcurrent or short-circuit event even if the operating handle is physically held in the ON position.

Yes, Eaton and Cutler-Hammer are the same brand. This breaker is a direct replacement for older Cutler-Hammer FAZ-D30/3-RT models installed in existing DIN rail panels.