Technical Specifications / Parameters Parameter Specification Manufacturer Type Code SH203-NA ARVP Brand / Series ABB System PRO M compact® (Modified/Variant with Accessory) Device Type Miniature Circuit Breaker (MCB) with Integrated Auxiliary Contact Number of Poles 3-Pole (3P) Rated Current (In) Not specified in code; must be selected (e.g., 16A, 20A, 25A, 32A, etc.). The "SH203" base supports a range. Rated Operational Voltage (Ue) 400V AC (3-phase) Tripping Characteristic Not explicitly stated. Typically C Curve for general three-phase loads (motors, heaters, distribution), but must be verified. Rated Breaking Capacity (Icn) HIGH. The "-NA" suffix strongly indicates a High Breaking Capacity (HBC) version, likely 10 kA or 15 kA, exceeding the standard 6kA of the base SH series. Auxiliary Function (ARVP) Integrated Auxiliary Switch/Alarm Contact. • "ARVP" is a specific ABB accessory code. It commonly refers to a single-pole, changeover (SPDT) auxiliary contact with a specific switching logic (e.g., "trip-indicating" or "remote signaling"). • Function: Provides a dry contact (NO/NC) that changes state based on the breaker's position (ON/OFF) or trip status. Used for remote indication, PLC interlocking, or alarm circuits. Auxiliary Contact Rating Typically low-current signal rating (e.g., 6A / 250V AC). Standards Compliance IEC/EN 60898-1, and likely additional certifications for the accessory. Terminal Type Cage Clamp Terminal for main poles and auxiliary wires. Mounting DIN Rail Mounting (35mm rail). Module Width 54 mm (3 Poles) + additional width for the integrated accessory module. Primary Functions Overload Protection, Short-Circuit Protection, Remote Status Signaling.