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Single phase CURRENT SENSING relays are offered in the following formats:

 

 

These CURRENT MONITORS can be used to detect either over or under current conditions. When the current is greater than the rating of the model chosen, one of our standard or split core current transformers (CT) can be used in conjunction with the relay. Select a window size which will accommodate the size of the conductor which will pass through it. Then select the primary amperage based on the nominal current flowing through the conductor. If the load being monitored draws 60 amps at 240vac, the CT should be rated 60 amps with a secondary of 5 amps. The same CT can be used for a motor load of 60 amps at 600 vac. Our CT's can withstand the six to ten times starting current drawn by a motor load so you don't have to oversize them. They'll also work equally well at all voltages up to 1000vac. For voltages exceeding this value, use one of our medium voltage models.

 
               
45000
m3
solar b
Model No
Function Over Current Under Current Over Current Over/Under Function Under Current Over Current
Time Delay (from fault) 0.1-3S 0.2-10S 0.2-10S 100mS or 1S ~1S ~1S
Time Delay (on energization) 0.1-10S (on delay) - - - - -
Hysteresis 5-50% ~5% ~5% 2% or 10% of set level ~1% ~1%
Latch User Selectable No No Switch Selectable No No
Output SPDT Relay DPDT Relay DPDT Relay SPDT Relay SPDT Relay SPDT Relay
Output Rating 10A @ 250VAC 6A @ 250VAC 6A @ 250VAC 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC
Supply Voltage Un 24, 110, 230VAC 110, 230, 400VAC 110, 2320, 400VAC 18-240VAC, 12-240VDC 12, 48VAC/DC, 24VDC 12, 48VAC/DC, 24VDC
- - - - 24, 110, 220/240VAC 24, 110, 220/240VAC
Integral Transformer Yes Yes Yes Yes 110, 220/240V only 110, 220/240V only
Monitoring Range

Y2: 5-100mA AC/DC

Y3: 50mA-1A AC/DC

Y4: 500mA-10A AC/DC

0-80% of 5A (In) 40-120% of 5A (In)

Switch Selectable

1. 20mA to 500mA, AC/DC

2. 200mA to 5A AC/DC

4-20mA DC

0.35-5A AC

0.5-7.5 DC

4-20mA DC

0.35-5A AC

0.5-7.5 DC

ACCESSORIES - - - -