The EBERLE PLS 511 S01 is a compact three-phase monitoring relay engineered to protect motors and critical loads by verifying correct phase sequence and detecting phase loss and asymmetry in industrial power distribution. Ideal for motor control centers, HVAC systems, pumps, and conveyors, it helps prevent unplanned downtime and equipment damage in demanding electrical environments.

Built for DIN-rail control panels, the PLS 511 S01 continuously supervises the three-phase supply at 50/60 Hz and actuates a robust relay output for interlocking, shutdown, or alarm signaling. With proven EBERLE build quality, clear status indication, and secure screw-terminal wiring, it supports fast commissioning and reliable long-term operation in switchboards and process installations.

Choose the EBERLE PLS 511 S01 when you need dependable phase monitoring with low total cost of ownership; it combines reliable performance with expert customer support and includes a 1-year warranty to underpin your project delivery and maintenance planning.

• Brand: Eberle
• Series: PLS
• Model: PLS 511 S01
• Monitoring function: Phase sequence, phase loss, asymmetry
• Supply/Monitoring voltage: 3x400 VAC, 50/60 Hz
• Output type: Relay, 1 changeover (SPDT)
• Protection rating: IP20
• Connection type: Screw terminals