Description

The TDK-Lambda DRB120-24-3-A0 is a reliable, compact DIN rail power supply delivering 24VDC at 5A (120W) from a wide-range three-phase AC input. Designed for industrial control panels, building automation, and machine systems, this unit offers high efficiency, robust protections, and long service life even in demanding environments.

The supply accepts a wide 3-phase input range of 350–575VAC (50/60Hz), making it ideal for global installations. It features boost mode capability, providing up to 174W peak output for 600 seconds—ideal for load-intensive equipment or start-up surges. A tightly regulated output voltage (adjustable from 22.5 to 28.5VDC) ensures stable power delivery to sensitive devices.

With screw-type terminals, an integrated DC-OK relay contact, and remote inhibit input, the DRB120-24-3-A0 supports comprehensive control and system monitoring. Built-in protections include constant current overload handling, overvoltage shutdown, and thermal derating safeguards. The unit is convection-cooled and rated for continuous operation up to +70°C with no derating required below +55°C.

Tested to IEC, UL, and CSA safety standards and featuring CE and UKCA compliance, this model provides industrial-grade reliability in a compact 55mm-wide package—optimised for space-constrained panels and automation enclosures.

Features and Benefits – TDK-Lambda DRB120-24-3-A0

• 24VDC Output at 5A Continuous (120W):
  Supplies stable, regulated DC power suitable for PLCs, control circuits, industrial sensors, relays, and HMI devices.
• Boost Mode Output – 7.2A (174W) for 600 Seconds:
  Handles high inrush currents or load surges without voltage drop—ideal for inductive loads or devices with start-up demand.
• Wide 3-Phase AC Input Range (350–575VAC):
  Designed for global industrial systems, removing the need for voltage selection or step-down transformers.
• High Efficiency (≥91.2%):
  Reduces power loss and internal heating, extending component life and supporting compact cabinet designs without forced air cooling.
• Constant Current Overload Protection:
  Maintains output control during overload conditions, automatically entering hiccup mode to protect connected equipment.
• Remote Inhibit Control:
  Supports external shut-off via automation or safety systems, enhancing integration and operational control.
• DC-OK Relay Contact:
  Enables real-time system monitoring by providing a dry contact signal when output voltage is within specification.
• Adjustable Output Voltage (22.5 – 28.5VDC):
  Offers flexibility for voltage-sensitive loads or to offset cable voltage drops in large systems.
• Wide Operating Temperature Range (-25°C to +70°C):
  Reliable in harsh industrial environments, with no derating required below +55°C and convection-cooled for silent operation.
• Compact DIN Rail Housing (55mm Width):
  Saves valuable enclosure space and easily mounts to standard TS35/7.5 or TS35/15 DIN rails.
• International Certifications:
  Compliant with IEC/EN/UL/CSA 61010-1 and 62368-1, and carries CE and UKCA markings for global acceptance.
• IP20 Enclosure Rating:
  Finger-safe and suitable for protected industrial panel environments, ensuring easy and safe installation.