Power Distributor-Switching

Ideal Use Cases

The RDL ST-PD5U is intended for systems that need to distribute 24 Vdc power from a switching supply to several destinations. It provides up to five power distribution points, making it suitable when multiple 24 Vdc loads share one source. The combined load across the five outputs must not exceed 2 A. This defined arrangement is useful when a system requires dc power distribution, voltage-presence indication, and a visible fault condition if excessive load current causes an output to become inactive.

Why Choose This Model

The ST-PD5U combines dc power distribution, soft-start operation from a switching supply, voltage indication, and reverse-voltage protection. Its input/output rating is 24 Vdc at 2 A, and it is specifically intended for use with a current-limited switching supply. Two front-panel indicators communicate operating status. The POWER LED indicates power presence, while the FAULT LED identifies an inactive output condition caused by excessive load current. Together, they provide clearly defined power and fault indications based on the unit’s documented operating conditions.

Installation and Integration

Plan the ST-PD5U around a current-limited 24 Vdc switching supply. The recommended power supply is the PS-24V3 for international applications or the PS-24V3A for the USA. Loads can be connected across as many as five distribution points, but the total load current for all outputs must remain at or below 2 A. The specified ambient operating range is 0°C to 50°C. Available integration resources include a PDF specification sheet, an engineering functional-block CAD file, and end and front panel diagrams in American DXF format. These documents provide the listed reference materials for system and panel planning.

Performance Highlights

• Distributes 24 Vdc power from a switching supply.
• Provides up to five power distribution points.
• Supports a maximum combined load current of 2 A.
• Offers soft-start operation from the switching supply.
• Includes a POWER LED for voltage-presence indication.
• Includes a FAULT LED that indicates an output is inactive because of excessive load current.
• Provides reverse-voltage protection.
• Operates in ambient temperatures from 0°C to 50°C.

The electrical rating and output limit apply to the complete distribution arrangement: adding more connected outputs does not increase the available 2 A total load capacity.

What Makes It Different

The ST-PD5U is more than a set of five dc distribution points because its documented feature set also includes soft-start behavior, two specific status indications, and reverse-voltage protection. The FAULT LED has a defined purpose rather than serving as a general warning: it indicates that an output is inactive due to excessive load current. The explicit five-output configuration and 2 A aggregate limit also make it possible to compare the unit directly with a system’s planned number of loads and combined current requirement.

Final Assessment

The RDL ST-PD5U is a focused choice for distributing 24 Vdc power to as many as five points from a current-limited switching supply. Selection should be based on three documented requirements: a 24 Vdc system, a total load no greater than 2 A, and an ambient operating environment between 0°C and 50°C. Within those limits, the unit provides soft-start operation, POWER and FAULT status LEDs, and reverse-voltage protection. It ships in a cardboard box measuring 2 x 2 x 4 inches, with a listed shipping weight of 0.21 pounds and WEEE weight of 0.16 pounds.