Product details
Allen-Bradley 1756-PB72K DC Power Supply | ControlLogix Series
Detailed Technical Specifications
- Brand: Allen-Bradley (Rockwell Automation)
- Full Model Number: 1756-PB72K
- Series: ControlLogix
- Type: DC Input Power Supply
- Nominal Input Voltage: 24V DC
- Input Voltage Range: 18 – 32V DC
- Max Input Power: 95 Watts
- Rated Output Power: 75 Watts at 60°C (140°F)
- Output Current:
- 1.2V DC: 1.5 Amps
- 3.3V DC: 4 Amps
- 5.1V DC: 10 Amps
- 24V DC: 2.8 Amps
- Hold-up Time: 40 ms (at 24V DC)
- Inrush Current: 30 Amps max
- Isolation: 250V AC continuous
- Operating Temperature: 0 to 60°C (32 to 140°F)
- Storage Temperature: -40 to 85°C (-40 to 185°F)
- Humidity: 5-95% (non-condensing)
- Vibration Immunity: 5G (10-500 Hz)
- Shock Immunity: 30G (Operating), 50G (Non-Operating)
- EMC Immunity: Surge, RF, EFT/B
- Wire Size: 14 AWG (2.5 mm²) copper
- Torque: 0.8 N-m (7 lb-in)
- Weight: 2.5 lbs (1.1 kg)
- Dimensions: 5.5″ H x 4.4″ W x 5.7″ D
Installation & Compatibility
- Install in the left-side slot of the chassis.
- Works with 1756-A4, A7, A10, A13, A17 chassis (Series A, B, C).
- Use 90°C rated copper wire for connections.
- Ensure input power is within 18-32V DC range.
Shipping & Delivery
- Shipped fast via FedEx, UPS, or DHL.
- Package includes one 1756-PB72K power supply unit.
Frequently Asked Questions
- What is the minimum voltage for the 1756-PB72K?
- It will operate down to 18 Volts DC.
- Can I use this in a Series A chassis?
- Yes, it works with Series A, B, and C.
- Does it have reverse polarity protection?
- No, always check your wiring to avoid damage.
- What happens if the input voltage is too high?
- Do not exceed 32V DC. Overvoltage can damage the unit.
- Is the 75W output rating continuous?
- Yes, it provides 75W continuously at 60°C.










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