Black Box DIN Rail Power Supply, 40 Watts, 48 VDC

Engineered for rugged industrial environments, this Black Box DIN rail power supply delivers dependable, clean 48 VDC power with a robust 40-watt rating. Its universal input—85-264 VAC—simplifies global installations by accommodating widely used AC voltages, reducing the need for multiple adapters or transformers. For DC-powered systems, an optional input range of 120-370 VDC is supported (note: not certified for DC input), offering extra flexibility for modern automation setups and edge devices that rely on DC supply rails. The unit shines in factory automation, machine building, and control panel applications where space is at a premium and reliability is non-negotiable. A wide operating temperature range of -4 to +158°F handles cold starts in unheated enclosures and hot, congested panels under load. Finger-safe terminals minimize wiring hazards, while built-in protections guard against short circuits, overloads, and over-voltage events—reducing downtime and extending equipment life. With cUL and CE approvals, this power supply is trusted in safety-focused environments, making it an ideal backbone for industrial devices, sensors, controllers, relays, and edge computing hardware integrated into heavy-duty edge applications.

• Universal input 85-264 VAC: Accepts global power standards, simplifying global deployments and reducing inventory complexity for international projects.
• DC input compatibility (not certified for DC input): Supports 120-370 VDC as an input option, expanding compatibility for DC-powered systems and renewable-energy installations.
• Robust protection suite: Short-circuit, overload, and over-voltage protection safeguard both the power supply and attached devices, helping to minimize unplanned downtime.
• Finger-safe terminals and compact DIN rail design: Safe wiring with a space-saving form factor that mounts neatly in standard control cabinets for tidy, reliable installations.
• 40 W, 48 VDC output for industrial control: Delivers reliable power to controllers, sensors, relays, HMI panels, and other DIN rail devices essential to industrial automation at the edge.

Technical Details of Black Box DIN Rail Power Supply, 40 Watts, 48 VDC

• Output voltage: 48 V DC
• Power rating: 40 W (continuous)
• Input voltage: 85-264 VAC (universal); 120-370 VDC (not certified)
• Operating temperature: -4 to +158 °F (-20 to +70 °C)
• Protection features: Short circuit, overload, and over-voltage protection
• Terminals: Finger-safe design for safe wiring
• Certifications: cUL listed and CE marked
• Mounting: DIN rail compatibility for streamlined panel installation
• Applications: Ideal for powering heavy-duty edge devices, industrial controllers, sensors, pumps, relays, and automation modules

How to Install Black Box DIN Rail Power Supply

• Turn off the main power and verify the circuit is de-energized before wiring to ensure safe installation.
• Mount the power supply securely on a standard DIN rail inside a control cabinet, ensuring it is seated properly and unable to vibrate or dislodge.
• Connect the input wires to the L (live) and N (neutral) terminals. If grounding is required by local codes, attach the protective earth ground to the provided terminal.
• Attach the DC output to the load: connect the positive output to the device’s positive rail and the negative output to the device’s negative rail, ensuring correct polarity to prevent damage.
• Tighten all terminal screws to the recommended torque, avoiding loose connections that can generate heat, arcing, or intermittent operation.
• Close any enclosure covers and secure any knockouts or cable glands to maintain safety and keep dust and debris out of the terminals.
• Power on the system and perform a cautious, low-load start-up test to confirm that the 48 VDC output is stable and within expected tolerance.
• Monitor the unit during initial operation and verify that short-circuit, overload, and over-voltage protections engage properly during fault scenarios; document the installation for future maintenance.

Frequently asked questions

• Q: What input voltage does the supply accept? A: It accepts 85-264 VAC (universal input). It can also accept 120-370 VDC as an input option, though this DC input is not certified.
• Q: What is the output voltage and power rating? A: The unit provides 48 V DC at up to 40 W, suitable for powering industrial devices such as controllers, sensors, relays, and HMI panels.
• Q: What protections are built in? A: It includes protection against short circuits, overload, and over-voltage to shield both the power supply and connected equipment.
• Q: What approvals does it carry? A: The product is cUL listed and CE approved, indicating compliance with safety and performance standards.
• Q: What is the operating temperature range? A: It operates from -4 to +158 °F (-20 to +70 °C), enabling reliable performance in harsh environments.
• Q: Is it DIN rail mountable? A: Yes, the compact form factor is designed for easy DIN rail mounting in standard control cabinets.
• Q: How do I verify safe installation? A: After installation, verify proper wiring, secure connections, check voltage output under load, and confirm that protective features respond correctly during fault conditions.