The HW1B-X4R is a 22mm IEC-style emergency stop pushbutton featuring a ø40mm head with pushlock key reset mechanism and plastic bezel construction. This non-illuminated E-stop switch is designed for operator-only control without contact blocks, providing tamperproof operation that complies with EN60947-5-5 and EN418 standards, as well as SEMI S2 requirements. The unit incorporates slow make double break self-cleaning contacts with finger-safe IP20 protection as standard, and is available in red color only. With worldwide approvals including CE, UL, CSA, CCC (Chinese), and TÜV certification, the HW1B-X4R is suitable for emergency stop stations and safety-critical applications across industrial control systems globally. The pushlock key reset design ensures secure operation and prevents accidental resets, making it ideal for high-reliability safety applications.