The Siemens 6ES7194-2AA00-0AA0 is a field-wireable M8 male plug designed for 24 V DC power supply connections in SIMATIC ET 200AL distributed I/O systems. With 4-pole screw terminal termination and a straight 180° cable outlet, it accepts conductors from 0.14 mm² to 0.5 mm² (AWG 26–20) with cable diameters of 4–5.5 mm. The plastic housing provides IP65/IP67 protection for direct on-machine installation. This is the male counterpart to the 6ES7194-2AC00-0AA0 female socket — both are typically needed when building ET 200AL power daisy-chain wiring.

How does this plastic plug differ from the metal shielded variant (2AB00)?

The 6ES7194-2AB00-0AA0 is the metal-housing, electromagnetically shielded version of this plug. Both are 4-pole male M8 connectors with screw terminals and identical electrical ratings. The key differences: the 2AB00 uses a nickel-plated die-cast zinc housing with integrated shielding connected to the cable screen, weighs 25 g (vs 15 g for this plastic version), and is rated for operating temperatures up to +80 °C instead of +85 °C. Choose the metal variant when the installation is near sources of electromagnetic interference — VFDs, contactors, or welding equipment. For standard 24 V DC power distribution in electrically quiet environments, this plastic version is the lighter and more cost-effective choice.

What is the mating connector for this plug?

This plug (2AA00) mates directly with the 6ES7194-2AC00-0AA0 female socket. Together they form a complete M8 field-wireable connection pair for ET 200AL power lines. The plug also mates with the M8 female receptacles built into ET 200AL interface modules and I/O modules.

Frequently Asked Questions

Can I use this connector for signal wiring instead of power?

While mechanically compatible with any M8 4-pole receptacle, this connector is designed and pinned for ET 200AL 24 V DC power distribution. For PROFINET bus connections within the ET 200AL system, Siemens provides separate green-coded M8 bus connectors with different internal construction (shielded twisted-pair). Always follow the ET 200AL color-coding convention: green for bus, gray/black for power.

What tools do I need for field assembly?

The screw terminals require only a small flat-head screwdriver (2.5 mm blade width recommended). No special crimp tools or insertion tools are needed, making this connector fully field-serviceable without proprietary tooling.