Weidmuller PRO PM 250W 12V 21A Power Supply

Technical Overview

Compact 250W 12V DC switch-mode power supply with 21A output, wide AC input, IP20, screw terminals.

Key Features

Compact dimensions: 215 mm depth, 115 mm width, 30 mm height.
Wide AC input voltage range from 90-264 V AC (rated 100-240 V AC).
High efficiency of 84% for optimized energy consumption.
Robust screw connection terminals for secure wiring.
IP20 protection degree suitable for protected industrial environments.
Operating temperature range from -20 °C to 70 °C.
Integrated overload protection (120%-180% Inominal) and short-circuit protection.

Technical Specification Matrix

Parameter	Value
Output Power	250 W
Rated Output Voltage	12 V DC
Rated Output Current	21 A
AC Input Voltage Range	90…264 V AC
Rated Input Voltage	100…240 V AC
Frequency Range AC	47…63 Hz
Efficiency	84%
Protection Degree	IP20
Operating Temperature	-20 °C…70 °C
Storage Temperature	-40 °C…85 °C
Connection System	Screw connection
Output Voltage Adjustable Range	10.8…13.2 V DC
Overload Protection	120%…180% Inominal, hiccup mode with automatic recovery
Short-circuit protection	Yes
Mains Failure Bridge-over Time	20 ms
Nominal Power Consumption	297.6 VA
Physical Weight (kg)	0.74
Dimensions L x W x H (cm)	21.5 x 11.5 x 3

Industrial Applications

1. Industrial Control Panel Power

This power supply is ideal for providing stable 12V DC power to critical components within industrial control cabinets, such as PLCs, HMI panels, and various sensors.

Problem Solved

Ensures a reliable and regulated power source for sensitive control equipment, with integrated overload and short-circuit protection to prevent system damage in fault conditions. Its compact 30mm height allows for efficient space utilization in crowded enclosures.

PLC powerHMI supplySensor powerControl cabinet integration12VDC regulationOverload protectionCompact footprintIP20

2. Enclosure LED Lighting Systems

Suitable for powering 12V DC LED lighting strips or modules installed inside industrial machinery enclosures or electrical panels, enhancing visibility for maintenance and inspection tasks.

Problem Solved

Delivers a consistent and efficient 12V DC power output for internal lighting, improving operational safety and ease of service. The IP20 rating is appropriate for protected environments, and the wide operating temperature range (-20°C to 70°C) handles typical industrial ambient conditions.

LED lightingEnclosure illumination12VDCIP20Maintenance lightingOperational temperature

3. Small Machine OEM Integration

Perfect for original equipment manufacturers (OEMs) integrating a reliable power source into compact machinery, such as dispensing systems, packaging equipment, or automated assembly cells, to drive 12V DC motors, relays, and actuators.

Problem Solved

Provides a robust 250W, 21A 12V DC supply adequate for various small machine functions. The screw connection terminals offer secure and vibration-resistant electrical connections, while the adjustable output voltage enables fine-tuning for specific component requirements.

OEM machinery12VDC motorsActuator powerRelay control250W outputScrew terminalsAdjustable voltage