The Allen-Bradley 1769-PB4 is a Compact I/O power supply. This module is part of the 1769 Compact I/O product family that operates when supplied with an external supply voltage of 19.2-31.2 VDC with nominal supply voltage of 24VDC. This power supply module delivers the appropriate current drawn by modules installed to its left and right side. Up to Eight (8) modules may be installed on both sides of this power supply.

The 1769-PB4 has a current capacity of 4.0 A at 5VDC and 2.0 A at 24VDC. It is capable of withstanding a maximum inrush current of 30 A with isolation voltage rating of 75V (continuous), reinforced insulation type (IEC Class 1 grounding required) Routine tested at 1697V DC for 1 s, DC power input to system.

The 1769-PB4 has power consumption of 100 VA @ 24V DC and Power dissipation of 14.5 W @ 60° C (140° F). This power supply is provided with internal fuse which could be a Wickmann 19193-6.3A or Littelfuse 021706.3MXP.

The 1769-PB4 has physical dimension of 118 (H) x 70 (W) x 87 (D) mm (4.65 x 2.76 x 3.43 in.) with approximate weight of 630 g (1.39 lb). This power supply module follows the recommended installation of the CompactLogix product family as this power supply module is installed directly to the enclosure subpanel or using a standard DIN rail. When terminating signal and incoming wires to this power supply, recommended wire size is 14 AWG (2.5 mm2 ) solid copper wire with insulation rating of 90 °C (194 °F) or higher, with maximum insulation thickness of 1.2 mm (3/64 in.).

The entire power supply measures (4.65 x 2.76 x 3.43inches and weighs approximately 630 grams or 1.39 pounds. The 1769-PB4 has built-in fuse which can be a Wickmann 19193-6.3A or Littelfuse 021706.3MXP. This power supply has an open-type enclosure. The input voltage range of this power supply is 19.2 to 31.2 Volts DC and its nominal input voltage is 24 Volts DC. The power consumption is 100 VA at 24 Volts DC and the maximum inrush current is 30 Amps at 31.2 Volts DC. The 1769-PB4 has a continuous isolation voltage of 75 Volts from DC power input to the system and a maximum power dissipation of 14.5 Watts at 60 degrees Celsius. This power supply has the following radiated RF immunity: 10 V/m with 1 kHz sine-wave 80% AM from 80 to 2000 MHz, 10 V/m with 200 Hertz 50% Pulse 100% AM at 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz, and 10 V/m with 1 kHz sine-wave 80% AM from 2000 to 2700 MHz. It also has an EFT/B immunity of +/-2 kV at 5 kHz on DC power ports. The 1769-PB4 has a maximum operating altitude of 2000 meters or 6562 feet. Its operating temperature ranges from 0 to 60 degrees Celsius and its non-operating temperature ranges from -40 to 85 degrees Celsius. It also has a non-condensing relative humidity of 5 to 95% and an operating vibration of 5 g at 10 to 500 Hertz. Its operating shock is 20 g when using a DIN rail mount and 30G when using a panel mount, while its non-operating shock is 30G with a DIN rail mount and 40G with a panel mount.