What the ratings mean for fit
The 1SBL137501R1300 AF09-22-00-13: The 25 A rating on a 4-pole frame means this contactor handles moderate motor loads (up to 4 kW at 400 V) or resistive heating banks within that current envelope. The 230 V ac coil is standard for European control circuits; verify your control transformer taps match before panel integration. The 2NO + 2NC auxiliary contacts give you one spare feedback pair after wiring the main contactor hold-in — useful for status indication back to a PLC input card.