Product Description
Allen-Bradley 1768-PB3 CompactLogix L4x AC/DC Power Supply
Manufacturer: Allen-Bradley
Model/Part Number: 1768-PB3
Description: CompactLogix L4x AC/DC In Power Supply
Key Specifications
| Attribute | 1768-PA3 | 1768-PB3 |
|---|---|---|
| Input Voltage Range | 85…265V AC / 108…132V DC / 16.8...31.2V DC | 85…265V AC / 108…132V DC / 16.8...31.2V DC |
| Nominal Input Voltage | 120V/220V AC / 24V DC | 120V/220V AC / 24V DC |
| Input Frequency Range | 47…63 Hz | N/A |
| Input Power, Max | 120VA / 120W | 112W |
| Output Power, Max | 90W (24V DC to backplane: 3.5 A) | 90W (24V DC to backplane: 3.5 A) |
| Output Power, Min | 6W | 6W |
| Power Dissipation | 30W | 22W |
| Inrush Current, Max | 50 A @ 85…132V AC | 80 A @ 195…265V AC |
| Isolation Voltage | 250V Reinforced (input to system) | 250V Reinforced (input to system) |
| Internal Overcurrent Protection | Non-replaceable fuse | Non-replaceable fuse |
| Recommended External Overcurrent Protection | 4–6 A @ 28.5–36.7 A2S | 8–12 A @ 166–250 A2S |
| Weight | 0.98 kg (2.15 lb) | 1.01 kg (2.22 lb) |
| Dimensions (HxWxD) | 131.25 x 132.75 x 105.50 mm | 131.25 x 132.75 x 105.50 mm |
| Mounting | DIN rail or panel mount | DIN rail or panel mount |
| Wire Size (Input) | 14 AWG (2.5 mm²) | 14 AWG (2.5 mm²) |
| Wire Size (Output) | 14 AWG to 22 AWG | 14 AWG to 22 AWG |
| Conductor Screw Torque | 0.6 Nm (5 lb-in) | 0.6 Nm (5 lb-in) |
Output Specifications
-
Output #1: 24V DC to backplane
- Ride-through interval: 25 ms @ 90W
- Full power hold-up: 5 ms @ 90W
- Extended hold-up: 8–12 s @ 1.25 W
-
Output #2: 24V DC to front panel terminal block
- Voltage: 18…27.60V
-
Output Disable: Disable output during hold-up periods
Environmental Specifications
| Attribute | 1768-PA3 | 1768-PB3 |
|---|---|---|
| Operating Temperature | -40…+85°C (-40…185°F) | -40…+85°C (-40…185°F) |
| Non-operating Temperature | 0°C to 60°C (32°F to 140°F) | 0°C to 60°C (32°F to 140°F) |
| Relative Humidity | 5–95% non-condensing | 5–95% non-condensing |
| Vibration | IEC 60068-2-6 (5g @ 10…500 Hz) | IEC 60068-2-6 (5g @ 10…500 Hz) |
| Shock (Operating) | 30g | 30g |
| Shock (Non-operating) | 50g | 50g |
| Electromagnetic Immunity | IEC 61000-4-2 (6kV contact, 8kV air) | IEC 61000-4-2 (6kV contact, 8kV air) |
| Surge Immunity | IEC 61000-4-5 (±2 kV) | IEC 61000-4-5 (±2 kV) |
| ESD Immunity | IEC 61000-4-4 (±4kV) | IEC 61000-4-4 (±4kV) |
Certifications
- c-UL-us: UL Listed for industrial control equipment
-
CE Compliance:
- EMC Directive: EN 50082-2, EN 61000-6-2, EN 61000-6-4
- Low Voltage Directive (LVD): EN 61010-1