The new EMD-BL compact monitoring relays from Phoenix Contact monitor current, voltage, and phase sequence efficiently and reliably. In the space-saving installation housing and equipped with the Push-in quick connection technology, the devices allow for quick, tool-free wiring. They are particularly suitable for simple monitoring tasks from series production through to building installations.

The product family includes four types of devices: For single-phase networks, there is also a voltage monitoring relay with measurement ranges up to 24 V AC/DC and 230 V AC, in addition to the current monitoring relays for alternative currents up to 10 A. In three-phase networks, an additional voltage monitoring relay detects AC voltages up to 400 V/230 V AC with adjustable measurement ranges. A phase monitoring relay indicates errors in the phase sequence, phase failure, and asymmetries in networks up to 480 V AC/277 V AC.

All parameters, such as monitoring areas and tripping delay, can be easily adjusted using the rotary switch located at the front. Moreover, the highly readable LEDs provide for quick on-site analysis. Besides the quick connection technology, the versions with voltage supply from the measuring circuit are particularly easy to install.

Summary: The space-saving installation housing and the easy installation make the compact EMD-BL monitoring relay an ideal choice.