Phoenix Contact 27 08 863

Name: Phoenix Contact 27 08 863
Brand: Phoenix Contact
SKU: 27 08 863
Availability: InStock

€ 239,00

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SKU: 27 08 863 Category: Power supply Brand: Phoenix Contact

Description
Additional information

The Phoenix Contact 27 08 863 is a QUINT POWER series industrial power supply unit manufactured by Phoenix Contact. This SKU belongs to the well-established QUINT POWER product family, which is designed to provide highly reliable DC power conversion for industrial control and automation systems. The primary function of this unit is to convert AC mains input voltage into a regulated DC output voltage suitable for powering PLCs, sensors, actuators, and other industrial electronics.

The QUINT POWER series is known for its active current limiting and SFB (Selective Fuse Breaking) technology, which delivers a short-term output current boost of up to 1.5 times the nominal output current to selectively trip downstream circuit breakers and fuses. The units incorporate preventive function monitoring with a signal contact that provides early warning before the output voltage drops below the threshold, enabling predictive maintenance. Built with a wide-range input, the supply is capable of operating across international mains voltages, and the design includes protection against overload, short circuit, and overvoltage conditions. The housing is designed for DIN rail mounting and meets relevant international safety certifications including UL, CSA, and CE marking.

The QUINT POWER series power supplies are widely deployed in machine building, factory automation, process control panels, and building automation systems. They are particularly suited for applications where high system availability is critical, such as in automotive manufacturing lines, food and beverage processing equipment, and water treatment facilities. The combination of diagnostic signaling, robust protection features, and DIN rail form factor makes this series a standard choice for control cabinet integrators and OEM machine builders.

Technical Specifications

Series/Product Family	QUINT POWER
Input Voltage (AC)	100 – 240 V AC (wide range)
Input Frequency	50 / 60 Hz
Output Voltage	24 V DC
Output Current (Continuous)	10 A
Output Current (Peak/Boost)	15 A (1.5x SFB boost)
Power Rating	240 W
Operating Temperature	-25 °C to +70 °C
Storage Temperature	-40 °C to +85 °C
Relative Humidity	5 – 95 % (non-condensing)
Mounting	DIN rail (EN 60715 35 mm)
Protection Rating	IP20
Safety Features	Overload protection, short-circuit protection, overvoltage protection, SFB technology
Signal Contact	Relay output for DC OK / preventive function monitoring
Certifications	CE, UL, CSA, GL
Control Type	Primary switched-mode power supply

Common Fault Indicators and System Events

DC OK LED Off: The output voltage has dropped below the preset threshold, indicating an overload, short circuit, or internal fault condition.
Check downstream load for short circuits or excessive current draw. Verify input voltage is within specification. Remove load and re-apply power to check if the unit recovers.
Signal Contact Open: The relay signal contact has opened, indicating that the output voltage is approaching the lower threshold limit before a full shutdown occurs. This is a preventive warning.
Inspect the load for increasing current consumption. Check for partial short circuits or failing loads. Plan for maintenance before a full output failure occurs.
Overload / Current Limiting Active: The power supply is operating in current limiting mode, delivering up to 1.5x nominal current via SFB boost. Sustained overload will cause thermal shutdown.
Identify and remove the overloaded or faulted downstream device. Check that total load current does not exceed the rated 10 A continuous output.
Overvoltage Shutdown: The output voltage has exceeded the overvoltage protection threshold, causing the unit to shut down to protect connected loads.
Disconnect the load and measure output voltage. If overvoltage persists with no load, the internal regulation circuit may be faulty and the unit should be sent for repair or replacement.
Thermal Shutdown: The internal temperature has exceeded the safe operating limit, triggering a thermal protection shutdown.
Ensure adequate ventilation around the unit in the control cabinet. Check that ambient temperature is within the -25 to +70 degrees C operating range. Allow the unit to cool before restarting.
Input Undervoltage: The AC input voltage has fallen below the minimum operating threshold, causing the power supply to cease regulation or shut down.
Measure the AC mains input voltage at the supply terminals. Verify that the supply voltage is within the 100-240 V AC rated range. Check upstream fuses, circuit breakers, and wiring connections.
No Output Voltage: The power supply produces no DC output despite AC input being present, which may indicate an internal component failure or blown internal fuse.
Verify AC input voltage is present and within range. Check for any visible damage to the unit. If input is confirmed good and output remains absent, the unit likely requires professional repair or replacement.

Frequently Asked Questions

What is the nominal output voltage and current of the Phoenix Contact 27 08 863?

The unit provides a regulated 24 V DC output at a continuous rated current of 10 A, giving a total power output of 240 W.

What is SFB technology and how does it benefit the installation?

SFB (Selective Fuse Breaking) technology allows the power supply to deliver up to 1.5 times the nominal output current for a short duration. This high current pulse is sufficient to selectively trip downstream miniature circuit breakers or blow fuses, ensuring only the faulted branch is isolated while the rest of the system continues to operate.

Does the 27 08 863 include a signal contact for monitoring?

Yes, the QUINT POWER series includes a relay-based signal contact that opens when the output voltage drops below a defined threshold, providing an early warning signal before a complete shutdown occurs. This contact can be wired into a PLC input or alarm system for predictive maintenance.

Is this power supply suitable for use with a 110 V AC supply as well as 230 V AC?

Yes, the unit features a wide-range AC input that accepts voltages from 100 V AC to 240 V AC at 50 or 60 Hz, making it compatible with both North American and European mains supplies without any manual switching.

Can the output voltage of the 27 08 863 be adjusted?

Yes, QUINT POWER units typically include a potentiometer on the front face that allows fine adjustment of the output voltage around the nominal 24 V DC value, enabling compensation for voltage drops in long cable runs.

Troubleshooting

No DC output voltage despite AC mains being present

Measure AC input voltage at the L and N terminals to confirm mains is present and within 100-240 V AC. Check the DC OK LED status on the front panel. Measure output terminals with a multimeter.

If AC input is confirmed and output is absent, check for a tripped internal protection. Disconnect all loads and attempt a restart. If the unit still produces no output, it likely has an internal component failure and should be replaced or sent for repair.

Output voltage is present but drops under load

Measure the output voltage at the supply terminals under full load conditions. Calculate total connected load current and compare against the 10 A rated output. Check for loose or high-resistance terminal connections.

Tighten all output wiring terminals to the specified torque. If load current exceeds 10 A, reduce the load or add a second power supply. If voltage drop persists within rated load, the unit may have degraded output regulation and require servicing.

Signal contact relay is open and alarm is triggered

Check the DC output voltage level at the output terminals. A signal contact opening indicates the output voltage is near or below the monitoring threshold. Inspect downstream loads for increased current consumption or partial faults.

Identify any newly added or failing loads drawing excess current. Remove suspect loads and check if the signal contact resets. If the output voltage is within specification but the contact remains open, the internal monitoring circuit may require inspection.

Power supply shuts down after running for a period of time

Check the ambient temperature inside the control cabinet. Verify that the ventilation slots on the unit are not blocked. Measure the surface temperature of the housing during operation.

Improve cabinet ventilation or add forced air cooling. Ensure minimum clearance distances above and below the unit are maintained as specified in the datasheet. If the cabinet temperature is within limits and shutdown persists, the internal thermal sensor or cooling components may be faulty.

Output voltage is outside the expected 24 V DC range

Measure the output voltage with a calibrated multimeter at the output terminals with no load connected. Check whether the output voltage trimmer potentiometer has been inadvertently adjusted.

Use a small screwdriver to carefully adjust the output voltage trimmer on the front panel back to 24 V DC. If the voltage cannot be adjusted to the correct level or is unstable, the internal voltage regulation circuit may be damaged and the unit should be repaired or replaced.

Condition	Repair, Used, Refurbished, New in box (sealed)