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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. |
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| 45 Series DIN Rail Mtg |
H.78 W.45 D.99(mm)
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| Model No |
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| 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 |
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| M Series DIN Rail & Surface Mtg |
H.89 W.17.5 D.59(mm)
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| Model No |
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| Function |
Under & Over Voltage |
Battery Voltage Alarm |
DC Under Voltage |
Under Voltage Timed |
Multi Function |
DC Under & Over Voltage |
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(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 |
- |
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Under adjustment: 75-95% of Un |
- |
- |
- |
2. 10 to 265VAC/DC |
- |
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Over adjustment: 105-125% of Un |
- |
- |
- |
Switch Selectable |
- |
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| B1 Series 11 Pin Plug-In |
H.80 W.40 D.92 (mm)
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| Model No |
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Accessories |
| Function |
Under Voltage |
Over Voltage |
Under & Over Voltage |
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| Time Delay (from fault) |
~1S |
~1S |
0.1-10S |
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| Hysteresis |
~1% |
~1% |
< 2% |
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| Latch |
No |
No |
No |
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| Output |
SPDT Relay |
SPDT Relay |
SPDT Relay |
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| Output Rating |
8A @ 250VAC |
8A @ 250VAC |
10A @ 250VAC |
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| Supply Voltage Un |
12, 48VAC/DC, 24VDC |
12, 48VAC/DC, 24VDC |
24, 115, 230VAC |
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24, 110, 220/240VAC |
24, 110, 220/240VAC |
- |
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| Integral Transformer |
110, 220/240V only |
110, 220/240V only |
Yes |
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| Monitoring Range |
3.5-50V or 5-70VDC |
3.5-50V or 5-70VDC |
Under: 83-98% of Un |
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35-500VAC or 50-700VDC |
35-500VAC or 50-700VDC |
Over: 102-117% of Un |
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| 70 Series DIN Rail & Surface Mtg |
H.70 W.100 D.114(mm)
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| Model No |
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| 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 |
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Over trip 100-125% of Un |
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