Technical Overview

The PCMAS75S24-GE is a high-performance, primary switched-mode power supply (SMPS) engineered by General Electric for mission-critical industrial environments. This module is specifically designed to provide ultra-stable 24V DC power to sensitive automation components, control logic, and field instrumentation. A standout feature of the PCMAS75S24-GE is its vacuum-encapsulated construction, which shields internal electronics from dust, moisture, and high-vibration stresses typical of plant floor installations. With an efficiency rating exceeding 89%, it minimizes thermal dissipation, allowing for a compact, fanless chassis-mount design that excels in space-constrained control cabinets.

Detailed Technical Specifications

The following parameters define the electrical performance and environmental tolerances of the PCMAS75S24-GE:

• Manufacturer: GE (General Electric)

• Module Type: Primary Switched Power Supply

• Total Power Output: 75W (Continuous)

• Regulated Output Voltage: 24V DC

• Rated Output Current: 3.125A (Standard 3A nominal)

• Conversion Efficiency: ≥ 89% at full load

• Universal AC Input Range: 90–264V AC (47–63 Hz)

• Extended DC Input Range: 100–353V DC

• Protection Circuitry: Integrated Short-Circuit, Overload, and Overvoltage protection

• Construction: Rugged vacuum-encapsulated housing for superior MTBF

• Cooling: Natural convection (No moving parts)

• Mounting Configuration: Chassis mounting (Screw terminals)

• Physical Dimensions: 166 mm x 85 mm x 35 mm

• Unit Weight: 720g (1.58 lbs)

Industrial Reliability and Safety Features

The PCMAS75S24-GE is built for global deployment, featuring a wide-range input stage that handles fluctuating power grids without requiring manual tap changes. Its encapsulated design not only improves heat conduction but also provides an additional layer of safety by preventing accidental contact with high-voltage internal components. The module's short-circuit protection is self-resetting; once the fault condition is removed, the power supply automatically resumes normal 24V output, reducing downtime in automated production lines.

Technical FAQ

Can the PCMAS75S24-GE be powered by a DC source? Yes. While primarily used with AC mains, the internal bridge rectifier and switching stage are rated for DC input between 100V and 353V DC, making it suitable for backup battery systems or specialized DC microgrids.

What are the benefits of vacuum encapsulation for this module? Vacuum encapsulation removes air pockets within the unit, which significantly enhances dielectric strength and heat dissipation. It also protects the transformer and capacitors from corrosive gases or high-humidity environments found in chemical processing or offshore applications.

Does this power supply require external cooling fans? No. Thanks to its high efficiency (≥89%), the PCMAS75S24-GE generates very little waste heat. It is designed for natural convection cooling, provided there is adequate clearance around the chassis for airflow.

SEO Title

GE PCMAS75S24-GE | 24V DC 75W Primary Switched Power Supply

Product Type

Primary Switched Power Supply

Product Tags

PCMAS Series, Power Supply, 24VDC Module, GE Industrial, Switched Mode Power, 75W PSU, Chassis Mount PSU

SEO Meta Description

GE PCMAS75S24-GE Power Supply. 75W output, 24V DC at 3A. Features vacuum encapsulation & 89% efficiency. High-reliability GE industrial power in stock.