Switching specs and contact arrangement
With 1 A continuous current at 110 V AC 50 Hz and four changeover contacts (4 C/O), the Schneider RHN421F handles typical pilot-duty loads in motor starter and PLC output isolation circuits.
Control voltage margins and drop-out
The coil operates reliably between 0.8 and 1.1 times the rated control voltage per IEC 60255, and drop-out occurs between 0.15 and 0.5 Uc — a wide margin that prevents nuisance drop-out on sagging supplies.
Durability and switching rate
Rated for 20 million mechanical cycles and a maximum operating rate of 6 cycles per minute, the RHN421F suits applications with frequent switching like conveyor interlocks or cycling timers.
Compact footprint and environment
Measuring just 33 x 43 x 54 mm with IP20 finger-safe terminals and a -40 °C minimum operating temperature, this relay fits tight enclosures and cold environments without derating.