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Single phase VOLTAGE sensing relays are offered in the following versions:

 

 

VOLTAGE MONITORS are used in AC and DC circuits. Many of our single phase monitors can be used in either.

Some can be used to monitor voltages up to 600vac; but Potential Transformers (PT's) can be used to step the voltage down without compromising performance for those models that might correspond to the features you're looking for but are limited to sensing lower voltages. We also offer medium voltage PT's to 15 kV.

 
45 Series   DIN Rail Mtg

45ser

H.78 W.45 D.99(mm)

Model No
Function Over Voltage Under & Over Voltage Over Voltage Under Voltage
Time Delay (from fault) 0.1-3S 0.1-10S ~200mS ~200mS
Hysteresis 5-50% < 2% 1-15% 1-15%
Latch User Selectable No No No
Output SPDT Relay SPDT Relay DPDT Relay DPDT Relay
Output Rating 10A @ 250VAC 10A @ 250VAC 8A @ 250VAC 8A @ 250VAC
Supply Voltage Un 24, 110, 230VAC 24/115/230VAC (selectable) 110, 230VAC 110, 230VAC
Integral Transformer Yes Yes Yes Yes
Monitoring Range

Y2: 0.5-10VAC/DC

Y3: 3-60VAC/DC

Y4: 30-600VAC/DC

Under trip 87-110% of Un

Over trip 90-113% of Un

100-125% of Un 75-100% of Un
M Series   DIN Rail & Surface Mtg

m1

H.89 W.17.5 D.59(mm)

Model No
M1TVR
Function Under & Over Voltage Battery Voltage Alarm DC Under Voltage Under Voltage Timed Multi Function DC Under & Over Voltage
(Single phase) - - (Delayed Restart) Voltage -
Time Delay (from fault) 0.2 - 10S (adjustable) 1-30S - 100mS 100mS or 1S -
(No delay if supply is <70% of Un) - - - - -
Hysteresis ~2% of trip level ~5% - ~2% 2% or 10% of set level -
Latch No No - - Switch Selectable -
Output SPDT Relay SPDT Relay SPDT Relay SPDT Relay SPDT Relay 2xDPNO Relay
Output Rating 8A @ 250VAC (AC1) 8A @ 250VAC - - 8A @ 250VAC -
Supply Voltage Un 24, 110, 115, 220, 230, 240V AC 12 to 24VDC 24, 48 VDC 220VAC 18-240VAC, 12-240VDC 24, 48VDC
Integral Transformer No No - - Yes -
Monitoring Range 70 - 130% of Un 75-125% of Un - - 1. 1 to 26.5VAC/DC -
Under adjustment: 75-95% of Un - - - 2. 10 to 265VAC/DC -
Over adjustment: 105-125% of Un - - - Switch Selectable -
B1 Series   11 Pin Plug-In

B1

H.80 W.40 D.92 (mm)

Model No
Function Under Voltage Over Voltage Under & Over Voltage
PF
Time Delay (from fault) ~1S ~1S 0.1-10S
Hysteresis ~1% ~1% < 2%
Latch No No No
Output SPDT Relay SPDT Relay SPDT Relay
Output Rating 8A @ 250VAC 8A @ 250VAC 10A @ 250VAC
Supply Voltage Un 12, 48VAC/DC, 24VDC 12, 48VAC/DC, 24VDC 24, 115, 230VAC
24, 110, 220/240VAC 24, 110, 220/240VAC -
Integral Transformer 110, 220/240V only 110, 220/240V only Yes
Monitoring Range 3.5-50V or 5-70VDC 3.5-50V or 5-70VDC Under: 83-98% of Un
35-500VAC or 50-700VDC 35-500VAC or 50-700VDC Over: 102-117% of Un
70 Series   DIN Rail & Surface Mtg

70

H.70 W.100 D.114(mm)

Model No
Function Under & Over Voltage
Time Delay (from fault) 200mS
Hysteresis 1-15%
Latch No
Output 2 x DPDT Relays
Output Rating 8A @ 250VAC
Supply Voltage Un 110, 230VAC
Integral Transformer Yes
Monitoring Range Under trip 75-100% of Un
Over trip 100-125% of Un