Mean Well Switching Power Supply - PCD Series 20-25W AC Dimmable Constant Current Driver - A-Type - 1050mA - 16-24 VDC
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Overview
- Work with leading edge and trailing edge dimmers
- 100-120 VAC Input Range
- Fully isolated plastic case
- Built-in constant current limiting circuit
- Protections: Short circuit / Overload / Over temperature
- Class 2 power supply
- Class II power supply - no FG
- Built-in active PFC function
- Cooling by free air convection
- 100% full load burn-in test
- High reliability
- 3 year warranty
PCD-25 Specification Sheet 
Class II
Class II power supplies must follow the International Electrotechnical Commission IEC 61439-1 design. This code details that Class II power supplies must have two layers of insulation between the user and the internal current-carrying components to protect the user from electrical shock. The initial layer is "basic" insulation. The second double layer is a reinforcement layer that eliminates the need for a protective earth connection (earthing) or a ground connection since the power supply is grounded within the product's casing.
Class 2
Class 2 power supplies must meet the National Electric Code (NEC) and Underwriters Laboratories (UL 1310) standards for wiring requirements and power limitations of AC/DC power supplies to minimize shock or fire risks. All Class 2 power supplies must meet the NEC overcurrent protection and wiring sizing regulations. They must be constructed with ‘In-Wall’ rated wiring for permanent installation inside walls or floors, where they may be surrounded by insulation. These wiring requirements help prevent cracking or melting of the wire, which could cause a fire hazard. These power supplies must have a maximum power capacity of 100 VA and cannot exceed a 30 VAC or 60 VDC output, minimizing the risk of electric shock or overheating from excessive currents.
Specifications
| Brand | Mean Well |
|---|---|
| Built-in PFC Function | Yes |
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Certifications/Compliance
Certifications/Compliance
Standards and certifications comprise a vast number of companies and compliances that serve specific purposes—primarily addressing safety, environmental impact, energy efficiency, and sanitation. They are divided into categories for each product type and certification type to allow for very specific qualifications related to each product. When this system is being used as intended, it gives consumers, installers, suppliers, and anyone else who may be involved confidence that the product is safe and will work well in their application. UL and ETL certifications relate to safety and installation and are the most common for power supplies. |
Class 2, Class II, FCC, UL Recognized |
| Dimmable | Yes |
|
Dimming Control
Dimming Control
TRIAC Dimming: This is the most commonly recognized dimming type, with TRIAC Dimmers found in most Home Centers and hardware stores. TRIAC (TRIode for Alternating Current) dimmers operate by modifying the voltage waveform, reducing the amount of power input to the device being controlled. Reducing the input power will result in a corresponding reduction in a power supply's output voltage/current or a decrease in the lumen output of a light fixture. TRIAC dimmers come in two variations: Forward Phase and Reverse Phase
0-10V Dimming: This type of dimming control is most commonly found in commercial applications. It works by varying a voltage from 0 to 10 VDC on dedicated dimming wires. The output of a power supply or light fixture is proportional to the voltage applied. Pulse-Width Modulation (PWM) Dimming: This dimming control adjusts output by rapidly turning the output on and off at a fixed frequency. The proportion of on-time to total time sets the dimming percentage. Potentiometer Dimming: Potentiometer dimming varies the output using a variable resistor, or potentiometer, to set the dimming level. |
TRIAC (ELV), TRIAC (MLV), TRIAC (MLV+ELV) |
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Environmental Rating
Environmental Rating
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Non-weatherproof, Suitable for Damp Locations |
| Input Frequency Range | 47 - 63 Hz |
| Input Connection Type | Pigtail |
| Input Voltage | 100-120 VAC |
|
IP Rating
IP Rating
|
IP30 |
| Multi-Tap | No |
| Number of Outputs | 1 |
| Output Connection Type | Pigtail |
| Output Current | 1050 mA |
|
Output Power
Output Power
A power supply's power consumption is measured in watts and refers to the maximum amount of power it is capable of delivering. For best results, choose a power supply that offers a minimum of 20% wattage overhead for your application. Wattage overhead ensures that your project will function correctly, extends the life of the power supply, and offers greater design flexibility by allowing for project expansion. |
25 Watts |
| Output Voltage | 16-24 VDC |
| Warranty | 3 Year |
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