1606-XLP50PE Allen-Bradley power supply New In Stock

The 1606-XLP50PE is an Allen-Bradley power supply that belongs to the bulletin 1606 of compact Power Supply. This power supply features compatibility with AC and DC voltage supply such as 100 to 240VAC and 85 to 375 VDC. This power supply has a hold-up time of >171 ms at 230V AC and >17 ms at 100V AC. It has a rated efficiency of 88.5% with Mean Time Before Failure (MTBF) of 600, 000 Hours.

Compared to the XLE series power supply, the XLP compact switched mode power supply which features DC-OK output that is used to indicate the operating status of the device via a contact output which may be used to connect to a relay, pilot light or any indicating device. The signal is activated at during normal operation and deactivated when errors are detected such as overload, overheating and short circuit.

It also has an integrated Thermal Alarm output that provides warning before and while overtemperature is active. Use this output to trigger indicating or sounding devices or interface to an input module of a PLC to monitor the state of the power supply.

The Current monitor output is an integral monitoring circuit to measure the output current that is proportional to the output current of the power supply unit.

This power supply is also equipped with Current Balance capability where load sharing may be implemented when units are connected in parallel.

Key Features:

• Compact form factor: Space-saving housing suitable for dense control panels.
• Flexible input range: Accepts 100–240VAC or 85–375VDC for global compatibility.
• Adjustable DC output: Supports 24–28VDC to match varied device requirements.
• DC-OK signal: Provides status indication for system monitoring and diagnostics.
• Thermal alarm output: Warns of temperature-related conditions before shutdown.
• Current monitor output: Supplies proportional output current feedback for diagnostics.
• Parallel operation: Current balance capability allows load sharing across units.
• Hazardous location approval: Rated for Class I, Division 2 installations.

The 1606-XLP50E delivers the reliability and precision required for industrial control systems and compact automation equipment.

Technical Specifications

Decoding the Catalog Number: XLP50PE vs XLP50E

Understanding Bulletin 1606 catalog number suffixes prevents the most common ordering mistake in this product family.

All 1606-XLP catalog numbers begin with the series identifier (XLP = compact switched-mode), followed by the power rating (50 = 50W), followed by one or two output voltage letters (E = 24V DC output), and finally a modifier suffix if applicable.

The base model, 1606-XLP50E, provides a clean 24–28V DC output with LED status indication and short-circuit/overtemperature protection. It is a fully capable industrial power supply for the majority of panel applications where the controller monitors the 24V rail through its own input logic.

The 1606-XLP50PE adds three hardware signal outputs that go beyond visual indication:

• The P modifier indicates the presence of the DC-OK relay contact, the Thermal Alarm output, and the Current Monitor output.

These outputs are wired to external devices — typically to a discrete input on the system PLC, to a pilot lamp on the panel door, or to a safety relay — and provide machine-level awareness of power supply health without requiring the PLC to infer supply status from indirect symptoms like module faults.

When the DC-OK contact opens, the PLC knows the power supply has entered a fault condition even if the controller itself is still running on bus capacitance. The Thermal Alarm output fires before the supply reaches its thermal cutout temperature, giving the system time to execute a controlled shutdown rather than a sudden loss of power. The Current Monitor output delivers a voltage proportional to the supply's output current, enabling current trending in the PLC historian — a useful early-warning indicator for load increases that precede component failures.

The DC-OK Output: How It Works and Why It Matters

The DC-OK relay contact is a normally-open dry contact that closes during normal power supply operation and opens — de-energising — when the supply detects any of its protection conditions: output overload, output short circuit, overtemperature, or insufficient output voltage.

This fail-safe (de-energise-to-fault) architecture is important. If the power supply fails completely and loses its own internal supply voltage, the contact opens automatically — there is no state where a failed power supply holds the DC-OK contact closed, falsely indicating a healthy condition. The output is wired to a 24V DC discrete input on the PLC or safety controller, and the PLC ladder logic maps this input to an alarm tag.

Practical wiring: the contact output terminals on the 1606-XLP50PE are separate from the power terminals and operate as a passive dry contact — no additional power supply is needed for the contact circuit, as the contact simply switches whatever circuit it is placed in. Maximum contact ratings must be observed when selecting the connected load (a pilot lamp, relay coil, or PLC input module, not a motor or solenoid directly).

For safety system applications, the DC-OK output can be wired to a safety relay's monitoring input to trigger a Category 0 or Category 1 stop when power supply health is lost. This is a common architecture in machinery with GuardLogix or Safety Relay-based safety systems where loss of 24V DC is classified as a safety-relevant failure.

The 1606-XLP50PE is approved for installation in Hazardous Location application with Class 1 Division 2 rating. The 1606-XLP50E power supply is an Allen-Bradley 1606-XLP compact switched-mode power supply that features a rated output wattage of 50 Watts. The compact switched-mode power supply comes with an output current of 2.1 Amps and with minimal heat generation. 

The power supply has a compact size and is suitable for use in applications with minimal installation space. The 1606-XLP50E power supply features global certifications that indicate that the power supply meets several international safety standards. The 1606-XLP50E power supply is a cost-effective industrial solution that is commonly used for low-power industrial applications. The rated efficiency stands at 80 to 90% and the power supply unit provides an option for screw or spring clamping. The 1606-XLP50E power supply features an ambient operating temperature range of -10 to 70 degrees Celsius. It also comes with an ambient storage temperature range of -40 to 85 degrees Celsius and it weighs only 240 grams.

This 1606-XLP switched-mode power supply features status LED indicators that allow for easy monitoring of the drive’s operating status. The LED indicators also provide critical diagnosis status reports. The 1606-XLP50E power supply provides a high level of performance and it is a reliable and compact power supply. This power supply is designed for single-phase application.

It has top of the line efficiency and it is a standard Allen-Bradley power supply that is built to save space while minimizing operating expenses. Therefore, it is an ideal industrial power supply that provides unique capabilities at a relatively low cost.