WVM Series - Voltage Monitor

Littelfuse Voltage Monitoring Relays
The WVM Series provides protection against premature equipment (motor) failure caused by voltage faults on the 3-phase line. The WVM’s microcontroller design provides reliable protection even if regenerated voltages are present. It combines dependable fault sensing with a 10 fault memory and a 6 LED status display. Part instrument, part control, the WVM protects your equipment when you’re not there and displays what happened when you return. The WVM is fully adjustable and includes time delays to prevent nuisance tripping and improve system operation. Time delays include a 0.25 to 30s adjustable trip delay, an adjustable 0.25 to 64m (in 3 ranges) restart delay, plus a unique 3 to 15s true random start delay. The random start delay prevents voltage sags caused by simultaneous restarting of numerous motor loads after a power outage.


See datasheet for operation details.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)Compare
WVM011AL500 to 600VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM611AH200 to 240VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM611AL200 to 240VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM611RL200 to 240VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM811AH355 to 425VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM811RL355 to 425VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911AH400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911AL400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911AL-60400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911AN400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911RH400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911RL400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)
WVM911RN-60400 to 480VACIsolated SPDTScrew terminals with captive wire clamps for up to #12 AWG (3.2mm2) wireSuface mount with 2 or 4 #8 (M4 x 0.7) screws6.90 x 4.40 x 2.40 in. (175.3 x 111.8 x 61.0mm)≅25oz (709g)