Here are the parameters of Allen - Bradley 1734 - EP24DC/B: Module Type: Expansion power supply Nominal Input Voltage: 24V DC Input Voltage Range: 10 - 28.8V DC Field Power Requirements: Max 400 mA @ 24V DC (+20% = 28.8V DC max) Inrush Current: 6 A for 10 ms Point Bus Output Current: 1 A @ 5V DC (10 - 19.2V input, horizontal mounting); 1.3 A @ 5V DC (19.2 - 28.8V input, horizontal mounting); 1 A @ 5V DC (10 - 28.8V input, vertical mounting) Field Power Supply Voltage Range: 10 - 28.8V DC Field Power Supply Current: Max 10 A Power Consumption: Max 9.8 W @ 28.8V DC Power Dissipation: Max 3.0 W @ 28.8V DC Thermal Dissipation: Max 10.0 Btu/hr @ 28.8V DC Isolation Voltage: 50V continuous, tested at 2600V DC for 60s Interruption Protection: Maintains output voltage for 10 ms @ 10V with max load Operating Temperature: -20 °C to +55 °C Storage Temperature: -40 °C to +85 °C Relative Humidity: 5 - 95% non - condensing Vibration Resistance: 5 g @ 10 - 500 Hz Shock Resistance: 30 g (operating), 50 g (non - operating) Pollution Degree: 2 Overvoltage Category: II Altitude: Up to 2000 meters without derating Enclosure Type: Open - style Mounting: Din - rail Dimensions: 7.62 cm × 2.54 cm × 13.34 cm Weight: 0.2 kg