Harmony 3-phase control relays provide continuous monitoring of three-phase networks: phase loss, phase sequence, asymmetry, overvoltage, and undervoltage. Compact (17.5 to 35 mm), they are easily mounted on DIN rails and are suitable for industrial applications such as motors, pumps, elevators, and generators.

Some models incorporate NFC technology for secure configuration via smartphone. Diagnostic LEDs and front-panel settings simplify commissioning and maintenance.

Available with 1 or 2 contacts (up to 8 A), these relays offer reliable, precise protection suitable for demanding environments.

Harmony 3-phase control relays provide continuous monitoring of three-phase networks: phase loss, phase sequence, asymmetry, overvoltage, and undervoltage. Compact (17.5 to 35 mm), they are easily mounted on DIN rails and are suitable for industrial applications such as motors, pumps, elevators, and generators.

Some models incorporate NFC technology for secure configuration via smartphone. Diagnostic LEDs and front-panel settings simplify commissioning and maintenance.

Available with 1 or 2 contacts (up to 8 A), these relays offer reliable, precise protection suitable for demanding environments.

The Harmony voltage monitoring relay provides continuous monitoring of electrical networks, whether single-phase or three-phase.

With an extended measurement range of up to 500 V AC/DC depending on the model, it effectively detects anomalies such as overvoltage, undervoltage, phase loss, or phase reversal.

Its relay outputs (1 or 2 changeover contacts depending on the reference) allow for rapid response in the event of a fault, while its adjustable time delays facilitate adaptation to the specific needs of each installation. Its multi-voltage power supply (24 to 240 V AC/DC) ensures simple and universal integration.

In addition to its technical performance, this relay offers numerous advantages. It guarantees increased safety by quickly detecting any dangerous voltage variations and contributes to equipment preservation by reducing wear and breakdowns related to electrical faults.

Versatile, it is compatible with a wide range of machines and systems. Its ability to reduce unplanned shutdowns ensures service continuity, and its modular format with simple adjustments allows for quick and efficient installation.

The Schneider Electric Harmony frequency control relay provides precise and continuous monitoring of electrical frequency to protect your installations from dangerous fluctuations. With an adjustable operating range of 40 to 70 Hz, it quickly detects underfrequency or overfrequency situations. Thanks to its adjustable thresholds and adjustable time delay from 0.1 to 10 seconds, it easily adapts to the specific requirements of each application.

This relay features two changeover contacts for reliable tripping and direct integration into your control circuits. Its multi-voltage power supply of 120 to 277 V AC makes it versatile, while its compact 35 mm size and DIN rail mounting ensure rapid installation. Status LEDs facilitate diagnostics, and the robust design meets international safety and performance standards.

The Harmony RM35-S speed monitoring relay from Schneider Electric is designed to ensure precise monitoring of rotational speeds in your industrial applications. Capable of detecting both overspeed and underspeed situations, it works with a wide range of sensors: 3-wire PNP or NPN models, Namur sensors, 0–30 V voltage signals, or dry contacts.

Its universal power supply range of 24 to 240 V AC/DC facilitates its integration into various electrical environments, while its compact 35 mm size allows for simple DIN rail mounting. It features a robust changeover (C/O) contact capable of handling up to 5 A and offers adjustable time delays for tripping tailored to your needs (from 0.6 to 60 s).

Built to last, it guarantees mechanical reliability of up to 30 million cycles and electrical endurance of 100,000 cycles. Equipped with diagnostic LED indicators and a sealable cover to secure settings, this relay also benefits from the Green Premium ecological label, demonstrating its low environmental impact.

The Harmony temperature control relay is designed to provide reliable thermal monitoring and protect your equipment from critical temperature variations. Compact and modular, it easily mounts on a DIN rail and integrates into any type of installation.

Available in versions:

• 1 changeover contact (1 FO)
• 2 changeover contacts (2 N/O)

It provides immediate circuit monitoring if the programmed thresholds are exceeded. Its multi-voltage power supply (24 to 240 V AC/DC) ensures maximum compatibility with different electrical environments. Threshold adjustment is simple using the front-panel controls, while the status LEDs provide quick diagnostics. Green Premium certified, this relay meets environmental standards by reducing its carbon footprint and being exempt from hazardous substances.

The Schneider Electric Harmony Pump Relay is a compact and reliable control device designed to monitor and protect your pumping systems. It operates over a wide voltage range of 208 to 480 V AC, offering optimal compatibility with most three-phase installations.

Equipped with a changeover contact (1 CO) capable of handling up to 5 A, it guarantees safe and durable control. Its 35 mm modular format allows for quick installation on DIN rails, with simple wiring and accessible settings. Designed to Schneider Electric quality standards, it benefits from Green Premium certification, guaranteeing an environmentally friendly and sustainable product.

The Schneider Electric Harmony Liquid Level Relay is designed to accurately monitor conductive liquids, ensuring the proper operation and safety of your installations. Compatible with a wide power supply range of 24 to 240 V AC/DC, it detects the level via resistive probes and features three electrode inputs for reliable measurement.

Its two robust changeover contacts (capacity up to 5 A) ensure reliable control, while the adjustable time delay from 0.1 to 5 seconds offers great flexibility of use. Compact (35 mm wide) and modular, it is easily mounted on a DIN rail, with settings accessible from the front and status LEDs for rapid diagnostics. Certified Green Premium and compliant with international standards, this relay combines performance, durability, and environmental friendliness.