An electronic trip mechanism makes these circuit breakers fast, precise, and consistent. They continuously monitor current and trip at a precise value compared to the much wider current range in traditional thermal-magnetic breakers. They're good for protecting devices that could be easily damaged by overcurrent such as sensors, HMIs, and controllers. Because they trip electronically, they don't require the bulky housing necessary for thermal trip mechanisms, so they take up less space in your control cabinet. They also eliminate the need for accessories, such as shunt trips, because they can be remotely monitored and controlled. For at the source troubleshooting, they have an indicator light and on/off/reset button for each circuit. To make sure your equipment is receiving the correct voltage, these breakers will also trip when the supply voltage goes under or over a set value.

Fixed-current breakers come set to trip at a specific current. This prevents accidental or unauthorized changes to when they’ll trip. Adjustable-current breakers let you choose the current at which they’ll trip. As your operation changes, you can adjust when these breakers will trip rather than replacing the entire breaker. Breakers with digital input/outputs send and receive signals, so you can remotely check the status of your breaker, reset it, and turn it on and off.

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