ABB Circuit Breaker - SN201 - 2CSS255101R0164

Curve C breakers are designed to handle moderate inrush currents, typically for circuits with inductive loads like small motors or transformers. They trip between 5 to 10 times the rated current.

The SN201-C16 is primarily designed for AC applications. For DC circuits, specific DC-rated circuit breakers are recommended to ensure proper protection and performance.

This model, SN201-C16, has a breaking capacity of 10 kA, meaning it can safely interrupt a fault current of up to 10,000 Amperes.

The CPI is integrated into the rocker switch. When the switch is in the 'ON' position, the contact is closed. When in the 'OFF' position, the contact is open. The indicator provides a clear visual cue of the breaker's status.

The SN201 is part of the ABB S200 range and is compatible with most S200 accessories, such as auxiliary switches (e.g., for remote signaling) and shunt/undervoltage releases.

The SN201 measures 69mm in length, 18mm in width, and 85mm in depth. It is designed for standard 35mm DIN rail mounting.

Check for overloaded circuits. Ensure the connected load does not exceed the 16A rating. Verify that the Curve C rating is appropriate for the connected equipment's inrush current. Inspect wiring for loose connections.

Identify and eliminate the fault condition that caused the trip (short circuit or overload). If the fault is cleared and the breaker still won't reset, it may be damaged and require replacement.

Ensure the DIN rail is correctly installed and is a standard 35mm width. Check that the breaker's mounting clip is not obstructed or damaged. Apply firm, even pressure to engage the clip.

Use a properly sized insulated screwdriver. Ensure the wire is fully inserted into the terminal and that no stray strands are preventing a secure grip. Retighten screws firmly.