Description
AC 200-220V power supply module for the GLOFA GM4 PLC family, delivering 5VDC and 24VDC for enhanced system powering.
The Polar Energy Assessment:
The GM4-PA2A is a standard power supply module for GM4 series PLCs, accepting 200-220VAC input and outputting dual 5VDC supplies (4A for I/O, 1A for peripherals) along with 24VDC at 0.7A. It installs in the base unit to power the entire rack, with overload protection and LED indicators for status. Designed for global 220V environments, it supports GM4 expansion topologies up to multiple bases.
Pros
- Optimized for 220VAC regions with efficient conversion and low ripple.
- Sufficient output for medium expansions (up to 12+ modules).
- Integrated diagnostics via status LEDs for quick troubleshooting.
Limitations
- Not compatible with 110VAC without step-up transformer.
- Similar capacity to PA1A; may need PA2C for higher sensor loads.
Typical use cases
European/Asian factory automation panels, powering GM4 systems with remote I/O, machine controls in 220V industrial zones, scalable OEM enclosures.

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