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3 Phase Relays

45PUVR-4W Three Phase Relay / Under Voltage

45PUVR-4W Three Phase Relay / Under Voltage

VOLTAGE and CURRENT monitoring of three phase systems to insure that these do not exceed or drop below critical values is paramount for keeping machinery running at correct speed and problem free.

 

MODELS AND SIZES:

45PUVR
45PUVR-4W

 

FEATURES:

Monitors own 3-phase supply
Phase failure / loss
Neutral loss (45puvr-4w )
Adjustable trip level (under voltage )
Hysteresis – adjustable
Output relay 8a (x 2)
DIN rail mounting


45PSR Three Phase Relay / Phase Sequence

45PSR Three Phase Relay / Phase Sequence

PHASE SEQUENCE is important for the correct rotation of the motor. Incorrect phase sequence can lead to machinery being damaged and perhaps serious injury to personnel.

 

MODELS AND SIZES:

45PSR

 

FEATURES:

Incorrect phase sequence / rotation
Phase failure / loss
Output relay 8a
DIN rail mounting


45085-4W Three Phase Relay – Under-over Voltage

45085-4W Three Phase Relay – Under-over Voltage / Time Delay / 4-Wire

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

45085-4W

FEATURES:

Detects under or over voltage condition
Separate adjustment for upper level and lower level
Selectable nominal voltage
Adjustable delay for each level
Output relay 8a (x 2)
Supply / relay indication
DIN rail mounting


45081 Three Phase Relay / Sequence

45081 Three Phase Relay / Sequence / Failure / Under Voltage

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

MODELS AND SIZES:

45081

 

FEATURES:

Incorrect phase sequence / rotation
Phase failure / loss
Under voltage
Delay from fault – adjustable


M3PRT-600 Three Phase Relay

M3PRT-600 Three Phase Relay – Sequence/Failure/Under Voltage/Time Delay – 600 VAc

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M3PRT-600

 

FEATURES:

MONITORS OWN SUPPLY AND DETECTS AN UNDER VOLTAGE CON DITION ON ONE OR MORE PH ASES
DETECTS INCORRECT PHASE SEQUENCE, PHASE LOSS AND NEUTRAL LOSS ( 4-WIRE ONLY – M3PRT/4W)
ADJUSTMENT FOR UNDER VOLTAGE TRIP LEVEL AND FOR TIME DELAY (FROM AN UNDER VOLTAG E CONDITION )
DIN RAIL OR SURFACE MOUNTING


M3PRT-2 – Three Phase Relay

M3PRT-2  Three Phase Relay – Sequence/Failure/Under Voltage/Time Delay

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M3PRT-2
M3PRT-2-4W

 

FEATURES:

Monitors own supply and detects an under voltage condition on one or more phases
Measures phase to phase voltage or phase to neutral (m3prt/2-4w)
Detects incorrect phase sequence, phase loss and neutral loss (m3prt/2-4w)
Adjustment for under voltage trip level & time delay (from an under voltage condition)
Del indication for supply and relay status
DIN rail or direct mounting


M3PRT Three Phase Relay – Sequence/Failure/Under and Over

M3PRT Three Phase Relay – Sequence/Failure/Under and Over Voltage/Time Delay

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M3PRT

 

FEATURES:

Incorrect phase sequence / rotation
Phase failure / loss
Under voltage – adjustable trip level
Delay from fault – adjustable
DIN rail or direct mounting


M3PPI Three Phase Relay

M3PPI Three Phase Relay – Sequence/Failure Indicator

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M3PPI

 

FEATURES:

Incorrect phase sequence / rotation
Phase failure / loss
DIN rail or direct mounting


M3PA3 & M3PA-4W Three Phase Relay

M3PA3 & M3PA-4W Three Phase Relay – Phase Asymmetry/Failure

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M3PA3
M3PA-4W

 

FEATURES:

Phase asymmetry
Adjustable trip level (asymmetry )
Incorrect phase sequence / rotation
Phase failure / loss
Neutral loss (m3pa-4w )
Output relay 8a (250v)
Supply & relay indication
11 pin plug-in version (model b1pa)
DIN rail or direct mounting


M1PRT-4W – Three Phase Relay

Three Phase Relay – Sequence/Failure/Under and over Voltage/Time Delay

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M1PRT
M1PRT-4W

 

FEATURES:

Monitors own supply and detects an under voltage condition on one or more phases
Detects incorrect phase sequence, phase and neutral loss (4-wire only m1prt/4w)
Adjustment for under voltage trip level
Adjustment for time delay (from an under voltage condition)
SPDT relay output 8a
LED indication for supply and relay status
DIN rail or direct mounting
DPDT relay output & high voltage versions


M3PRC Three Phase Relay – Failure/Under

M3PRC Three Phase Relay – Failure/Under and Over Voltage/Time Delay

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M3PRC
M3PRC-4W

 

FEATURES:

Phase failure / loss
Neutral loss (m3prc-4w)
Under voltage – adjustable trip level
Over voltage – adjustable trip level
Delay from fault – adjustable
DIN rail or direct mounting


M1PR Three Phase Relay – Phase Sequence

M1PR Three Phase Relay – Phase Sequence

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

M1PR

 

FEATURES:

Incorrect phase sequence / rotation
Phase failure / loss (closed circuit)
DIN rail or direct mounting


70PCVR-4W Three Phase Relay

70PCVR-4W Three Phase Relay / Under and over Voltage / 4 Wire

VOLTAGE and CURRENT monitoring of three phase systems to insure that these do not exceed or drop below critical values is paramount for keeping machinery running at correct speed and problem free.

 

MODELS AND SIZES:

70PCVR
70PCVR-4W

 

FEATURES:

Detects under or over voltage condition
Separate adjustment for upper level and lower level
Hysteresis adjustable
Output relay 8a (x2)
Supply / relay indication
DIN rail mounting


45095 Three Phase Relay

45095 Three Phase Relay – Phase Asymmetry/Failure

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it’s important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

 

MODELS AND SIZES:

45095

 

FEATURES:

Incorrect phase angle – adjustable
Phase failure / loss
Incorrect phase sequence / rotation
DIN rail mounting


45POVR & 45POVR-4W - Control Relay

45POVR & 45POVR-4W – Control Relay – Over Voltage

45POVR & 45POVR-4W Control Relay – Over Voltage

Many of our three phase VOLTAGE MONITORS also have phase loss, imbalance, and sequence detection. However, for a complete list of what are more commonly called PHASE MONITORS, please refer to that particular section.

MODELS AND SIZES:

45POVR
45POVR-4W

FEATURES:

Monitors own 3-phase supply
Phase failure / loss
Neutral loss (45P ovr -4w)
Adjustable trip level (over voltage)
Output relay 81 (x2)
Din rail mounting