Bachmann | NT250 | Regulated DC Power Supply Module

Overview

The Bachmann NT250 is a high-reliability DC power supply module engineered to deliver stable and regulated voltage for industrial control and automation systems. Designed for consistent performance in demanding environments, it ensures uninterrupted operation of controllers, communication units, and I/O modules within Bachmann’s automation architecture. Its compact and efficient design makes it ideal for both centralized and distributed power configurations.

Key Features

• Model Number: NT250

• Manufacturer: Bachmann Electronic GmbH

• Type: Regulated DC Power Supply Module

• Power Output: Multi-voltage output for powering multiple components simultaneously

• Electrical Isolation: Galvanic isolation between input, output, and bus circuits for enhanced system safety

• Design: Compact module with efficient thermal management for continuous operation

Technical Specifications

• Input Voltage Range: 38–58 VDC

• Peak Input Voltage: Up to +60 V (for <1 second per minute)

• Inrush Current: Maximum 7 A, settling within 0.5 seconds

• Output Voltages:

• +5 VDC at 6.0 A

• +15 VDC at 0.5 A

• -15 VDC at 0.5 A

• Total Output Power: 42 W

• Galvanic Isolation:

• 500 V between input and bus

• 100 V between input and ground

• Reverse Polarity Protection: Integrated protection for input terminals

Environmental Conditions

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -40°C to +85°C

• Relative Humidity (Operation): 5–95%, non-condensing

• Relative Humidity (Storage): 5–95%, non-condensing

• Cooling: Convection-cooled for maintenance-free operation

Performance and Design

The NT250 ensures consistent DC voltage supply to sensitive automation components, reducing power fluctuations and preventing system faults. With its galvanic isolation and built-in protection features, the module supports long-term stability and reliability, even under electrical noise and voltage surge conditions. The multi-voltage output makes it suitable for mixed-signal systems that require separate supply lines for analog, digital, and control circuitry.

Applications

The Bachmann NT250 is used across a wide range of industrial control and automation systems, including:

• PLC and I/O power distribution in process control systems

• Machine automation power supply backplanes

• Energy, marine, and transport sector control cabinets

• Powering instrumentation and measurement devices

FAQ

Q1: What is the total output capacity of the NT250?
A1: The module delivers a total of 42 W distributed across +5 V, +15 V, and -15 V outputs.

Q2: Does the NT250 provide input isolation?
A2: Yes, it features galvanic isolation of 500 V between input and bus, and 100 V between input and ground.

Q3: Can the NT250 handle temporary voltage surges?
A3: It can tolerate peak voltages of up to +60 VDC for less than one second per minute.

Q4: What kind of cooling does the NT250 use?
A4: It is designed for convection cooling, ensuring maintenance-free operation.