Bachmann|NT255 00013251-00| Power Supply Module
Description
The Bachmann NT255 is a high-efficiency power supply module designed to deliver stable and isolated power to CPUs and backplane modules in industrial automation systems.
Features
- Wide input voltage range with electronic reverse polarity protection
- Provides multiple output voltages for CPU and system modules
- High output power with peak load capability
- Integrated monitoring and diagnostics
- Durable design with heat dissipation and shock resistance
Technical Specifications
Input
- Voltage range: 18 V DC to 34 V DC
- Peak input voltage: +40 V for <1 s/min
- Max. power consumption: 68 W
- Reverse polarity protection: Electronic
- Starting current limitation: Up to 8 A after 5 ms
- Fuse: SMD fuse, 7 A (device defect)
- Input monitoring: Yes, for powerfail detection
Output
- Continuous output power: 45 W
- Peak output power: 55 W
- Output voltages:
- +5 V / 6 A (8 A peak)
- +15 V / 0.5 A
- -15 V / 0.5 A
- Power-fail bypass: 18 ms
- Power-fail message delay: After 3 ms
Monitoring & Indication
- State indicators: LEDs for Power, Error, Ready
- Powerfail signal: Processable by application program
- Galvanic isolation: 500 V (input/system), 100 V (input/ground)
Environmental Conditions
- Operating temperature: -30 °C to +60 °C
- Storage temperature: -40 °C to +85 °C
- Relative humidity: 5 % to 95 % (noncondensing)
- Pollution degree (IEC 60664-1): 2
Bachmann|NT255 00013251-00| Power Supply Module



Bachmann|NT255 00013251-00| Power Supply Module
Description
The Bachmann NT255 is a high-efficiency power supply module designed to deliver stable and isolated power to CPUs and backplane modules in industrial automation systems.
Features
- Wide input voltage range with electronic reverse polarity protection
- Provides multiple output voltages for CPU and system modules
- High output power with peak load capability
- Integrated monitoring and diagnostics
- Durable design with heat dissipation and shock resistance
Technical Specifications
Input
- Voltage range: 18 V DC to 34 V DC
- Peak input voltage: +40 V for <1 s/min
- Max. power consumption: 68 W
- Reverse polarity protection: Electronic
- Starting current limitation: Up to 8 A after 5 ms
- Fuse: SMD fuse, 7 A (device defect)
- Input monitoring: Yes, for powerfail detection
Output
- Continuous output power: 45 W
- Peak output power: 55 W
- Output voltages:
- +5 V / 6 A (8 A peak)
- +15 V / 0.5 A
- -15 V / 0.5 A
- Power-fail bypass: 18 ms
- Power-fail message delay: After 3 ms
Monitoring & Indication
- State indicators: LEDs for Power, Error, Ready
- Powerfail signal: Processable by application program
- Galvanic isolation: 500 V (input/system), 100 V (input/ground)
Environmental Conditions
- Operating temperature: -30 °C to +60 °C
- Storage temperature: -40 °C to +85 °C
- Relative humidity: 5 % to 95 % (noncondensing)
- Pollution degree (IEC 60664-1): 2