Technical Parameters Parameter Specification Series / Product Type ABB CR-M Series / 2-Pole Auxiliary Contact Block (Snap-on) Order Code CR-M230AC4 Contact Configuration 2 Normally Open (NO) (Two independent, single-pole, normally open contacts). Contact Material Fine silver alloy, suitable for reliable low to medium current switching. Rated Operational Current (Ie) 4 A (at the rated voltage, see below) Utilization Category AC-15: Control of electromagnetic loads (e.g., contactor, relay coils). DC-13: May also be rated for DC loads, but the "AC4" suffix emphasizes AC rating. Rated Thermal Current (Ith) 10 A Switching Capacity At 230V AC: 4 A (for AC-15) At 24V DC: 4 A (for DC-13, if applicable) Rated Insulation Voltage (Ui) 690V AC / 750V DC Mechanical Life Typically 10 million operations or more. Electrical Life At rated load (AC-15): Typically 300,000 operations. Connection Screw terminals for each contact. Terminals are typically marked as A1/A2 for one contact and 13/14 (or similar) for the other. Mounting Snap-on attachment to the rear of compatible CR-M series actuator heads. Multiple contact blocks can be stacked together. Safety Feature Contacts are typically not positively guided (force-guided). For safety-related applications requiring forced contact separation, a different block (e.g., CR-MX series with "D" code) must be selected. Standards Compliance IEC/EN 60947-1, IEC/EN 60947-5-1 Ambient Temperature -25°C to +70°C (Operation) Protection Degree (IP Rating) IP40 (as part of the assembled device in an enclosure)