Schneider Electric Snap-Action Double Contact Block, 2NO/1CO - Harmony XAC Series - XESD1291 Make or break connections in your switches or relays using this double contact block from Schneider Electric. It operates via two NO (normally open) and a CO (change over) state, so the contacts are activated when open. Thanks to a dual-spring return mechanism, the unit automatically returns to its normally open state after activation, so there's no need for resetting. The front-mounting unit is simple to install in your equipment and offers convenient access. It features a 10A cartridge fuse, so you can be sure of protection against short circuits. Features & Benefits • Quick installation by integral screw-mount terminals
• Vibration resistance of 15gn and shock resistance to 100gn, for use in heavy industrial environments
• 1,000,000 performance hours ensures long service life Applications • Manufacturing installations
• Construction vehicles
• Motor protection circuits How does the snap-action mechanism of this contact block function? The snap-action mechanism ensures there's a rapid transfer from the first normally open contact to the second via the change-over contact. This helps maintain contact reliability by guaranteeing a smooth movement from one state to another.