Part identification and lifecycle status
The 3RT1025-1AG20-ZX95: Mounting is via screw and snap-on onto a 35 mm standard mounting rail per DIN EN 50022, which is the standard DIN-rail profile for panel integration. The envelope dimensions are 45 mm width, 85 mm height, and 91 mm depth, fitting the S0 footprint.
Motor switching ratings and coordination
For AC-2 duty (slip-ring motor starting) at 400 V, the contactor is rated at 7.5 kW. The AC-4 rating (inching/plugging duty) at 400 V is 15.5 A. These are the load-bearing figures for motor switching applications; the AC-12 maximum operating current of 10 A covers resistive loads. Type 2 coordination (for reduced downstream damage under fault) requires a gL/gG fuse rated at 25 A. Type 1 coordination (allowable contactor destruction) permits a 63 A gL/gG fuse. For audit purposes, the coordination type must be specified in the panel design documentation.
Termination and environmental limits
Main current circuit terminals are screw-type, accepting solid conductors of 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). Stranded conductors accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), and max 2x 10 mm². AWG equivalents for main contacts are 2x (16 to 12), 2x (14 to 10), and 1x 8. Operating temperature range during operation is -25 to +60 °C. Maximum operating altitude is 2,000 m. Degree of pollution is 3 (conductive pollution, typical for industrial control panels). Front protection is IP20; terminal protection is IP00, meaning the terminals require enclosure within the panel.
Coil operating range and auxiliary contact ratings
The coil operating range at 50 Hz is 0.8 to 1.1 times rated voltage; at 60 Hz it is 0.85 to 1.1 times rated voltage. Rated control supply voltage is 110 V at both 50 Hz and 60 Hz. Auxiliary contact ratings at 24 V are 10 A, at 60 V are 2 A, at 110 V are 1 A, at 220 V are 0.3 A, at 230 V are 6 A, and at 400 V are 3 A. The contactor has zero instantaneous auxiliary contacts. Mechanical service life is typically 10,000,000 operating cycles.