Allen-Bradley 1756-PA75R Redundant Power Supply

The Allen-Bradley 1756-PA75R Redundant Power Supply is a ControlLogix AC power module designed for the 1756 chassis backplane and intended for use in redundant configurations to boost system availability. It accepts 85–265 VAC input (120/240 VAC, 50/60 Hz) and delivers up to 75 W of backplane power, with a rated input power of 115 VA. Its compact footprint is 6.9 in high by 5.7 in wide by 5.4 in deep (17.5 x 14.5 x 13.7 cm) and it weighs about 3.2 lb, with hold-up time of 2 cycles at 60 Hz (and 50 Hz), and an inrush current up to 20 A. Operating temperature range is 0–60 °C, and isolation between input and backplane is 250 V continuous. The unit provides annunciator power from 240 V AC 50/60 Hz or 240 V DC up to 50 mA (resistive load); catalog numbers include 1756-PA75R and PA75RK for kit-based redundant installations.