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Enclosure dimensions

Electronic measuring and monitoring relays - 14922 True r.m.s.*

XM420 enclosure (dimensions in mm) Screw mounting (dimensions in mm)
3.0 Device safety – down to the last detail • Continuous self monitoring, automatic alarm • No unauthorized access to the device – due to password protection and sealable transparent cover• Protective separation in accordance with IEC 61140 / DIN EN 61140 / VDE 0140 (measuring circuit / alarm circuit) Flexible indication– ideal for all requirements • Two separately adjustable alarm relays with one changeover contact each• Gold-plated relay contacts allow reliable switching of small currents (> 1 mA)• Fault memory can be deactivated, N/O operation or N/C operation selectable• A choice of measuring functions, different settings possible, can be deactivated XM421H enclosure (dimensions in mm) Screw mounting (dimensions in mm) Optimum adaptation – suits any particular application • Wide setting ranges and universal measuring inputs (AC/DC)• Variable start-up delay, response delay and delay on release times• Versions available for use installations subject to severe conditions
* True r.m.s.: (root mean square) value measurement Main catalogue part 3 – 06.2007 / Electronic measuring and monitoring relays 9