SICK 6053943 ES21-SA14F1 Emergency Stop Button

The SICK ES21-SA14F1 (6053943) is a surface-mount emergency stop switch from the ES21 safety command device family, designed for industrial safety circuits with a rotary-release actuator and a 22 mm mounting cutout. It provides two normally closed (NC) and one normally open (NO) contacts, with obstruction protection and a clearly labeled EMERGENCY STOP for unambiguous operation in machine controls. Electrical ratings include 3 A at 250 V AC or 2 A at 24 V DC, Ui 600 V, switching voltage ≥5 V DC, and switching current ≥1 mA, with a B10d life of 2.5 × 10^5 cycles, suitable for AC-15/DC-13 usage per EN 60947-5-1. Field wiring uses two M20 cable glands for conductors up to 2.5 mm²; enclosure is IP65 rated, and the device is a complete ES21 safety switch with surface-mount installation and rotary release action.