Interface Card Eaton INDRELAY-MS Internal Serial

The Eaton INDRELAY-MS Internal Serial interface card provides communication through volt-free relays and offers a Thunderbolt host interface with a serial output for wired connectivity. It is compatible with a range of Eaton UPS models including 5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS and 93PS Marine. The compact card (66 mm × 132 mm × 132 mm) is intended for integration where relay-based signalling and serial communication are required.

Advantages

The interface card delivers volt-free relay contacts for safe, isolated signalling and includes a serial output alongside a Thunderbolt host interface for reliable wired connections. Its compatibility with multiple Eaton UPS series simplifies installation in existing systems and the small form factor makes it suitable for constrained mounting spaces.

Suitable for

• Remote monitoring and control of Eaton UPS units
• Integration into rack or cabinet environments requiring relay signalling
• Applications needing both serial communication and isolated relay outputs

Key specifications

• Manufacturer: Eaton
• Model: INDRELAY-MS
• Connectivity technology: Wired
• Host interface: Thunderbolt
• Output: Volt-free relays and serial interface
• Compatible with: Eaton 5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS, 93PS Marine
• Dimensions (W×D×H): 66 mm × 132 mm × 132 mm
• Weight: 0.1 kg
• Colour: Multicolour

How to use

Install the INDRELAY-MS card into the designated slot of a compatible Eaton UPS according to the UPS service manual. Connect the Thunderbolt host interface and serial output to the monitoring or control equipment using appropriate wired cables. Wire the volt-free relay contacts to external signalling or control circuits as required, respecting polarity and isolation guidelines provided by Eaton.

Recommendations

Follow Eaton installation and safety instructions when fitting the card. Verify compatibility with your specific UPS model before installation and use shielded cables for serial connections in electrically noisy environments to ensure reliable communication.