MS-03

The EAPL MS-03 is a compact, high-performance phase sequence and failure monitoring relay designed to protect three-phase equipment from incorrect phase rotation, phase loss, or voltage imbalance. It ensures that motors and other three-phase loads operate safely and efficiently by continuously monitoring the supply conditions and isolating the circuit during abnormal situations. Reliable, accurate, and easy to install, the MS-03 is ideal for industrial and commercial control systems.

Key Features:

• Continuously monitors phase sequence, phase failure, and voltage imbalance in three-phase systems.

• Protects motors and equipment from damage caused by reverse phase rotation or missing phase supply.

• LED indicators provide clear status display for normal and fault conditions.

• Compact DIN-rail or panel-mount design for easy integration into control panels.

• Fast response time for immediate protection against phase irregularities.

• Adjustable voltage sensitivity (in select variants) for flexible system compatibility.

• Wide operating voltage range: typically 415 V AC, 3-phase, 50 Hz.

• Output relay suitable for direct control of contactors and trip circuits.

Applications:

• Three-phase motor protection in pumps, compressors, fans, and conveyors.

• Control panels, MCCs, and distribution boards.

• Industrial automation systems requiring phase monitoring and protection.

• HVAC systems and process plants where reliable phase sequencing is essential.