The ABB CE4K1‑10R‑02 is a compact emergency stop pushbutton designed for use in industrial control panels and machinery safety circuits. It features a mushroom‑head actuator with a key‑release reset, making it ideal for emergency stop functions that require a positive manual reset after operation. The unit is non‑illuminated and housed in a rugged enclosure suitable for demanding environments. The device includes two normally closed (NC) contacts for reliable interruption of control circuits when activated, and it mounts in a standard 22 mm panel hole for ease of installation.