Description
AC 200-220V high-capacity power supply module for the GLOFA GM4 PLC family, with combined 5VDC output for demanding loads.
The Polar Energy Assessment:
The GM4-PA2C is an enhanced power supply for GM4 PLCs, converting 200-220VAC to a unified 5VDC at 3A plus 24VDC at 0.5A, suitable for systems with heavy peripheral or sensor demands. It mounts in the base unit, providing robust power distribution with short-circuit protection. Compared to PA2A, it consolidates 5VDC rails for simpler wiring in larger setups, compliant with GM4 standards.
Pros
- Higher efficiency for unified 5VDC in noise-sensitive applications.
- Supports more peripherals with 3A at 5VDC.
- Compact design with overcurrent safeguards.
Limitations
- Single 5VDC rail may require external isolation for mixed I/O/peripherals.
- Slightly lower total 5V capacity than PA2A’s dual-rail setup.
Typical use cases
- High-load GM4 expansions with multiple comms modules, sensor-heavy process control, international panels needing versatile 220V power, upgrades from basic supplies.

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