The 61-8490.12 is a snap-action switching element designed for low-voltage switching applications with dual contact configurations (1 NC / 2 NO). It features a self-cleaning, double-break snap-action switching system with a contact opening width of 2 mm × 0.5 mm, rated for 150 V AC/DC at 5 A with a switching rating of 125 VAC at 2.5 A (AC-15 service category) and 250 VDC at 0.15 A (DC-13 service category). The device has a rated operational voltage of 250 VAC/DC, a rated impulse withstand voltage of 4 kV, and an electrical lifetime of at least 50,000 cycles at 250 VAC and 2 A. It operates reliably across a temperature range of -25°C to +55°C and features silver contacts with plug-in terminals (2.8 × 0.5 mm), making it suitable for industrial control panels, automation equipment, and human-machine interface applications requiring robust switching performance.