CLA - AC Current Level Relay

CLA - AC Current Level Relay

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Application: Current Level relay for monitoring an AC current. 

Description: The CLA# family of supply monitoring relay is designed as a dual level current monitoring relay. It is intended for monitoring either single phase or balanced 3 phase ac loads for both under and over-current conditions.  

Alternatives: 1. For a single selection of either under-current or over-current see the JAP1 range. 2. For a 3 phase under & over-current monitoring relay see the JAP3 range.  




Selection:

For the product to suit your application please see the selection chart below or contact sales:
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Product Ref Control SupplyU/C Trip LevelTrip Delay Timeabout trip delay timeRelay ContactsCurrent RatingEnclosure Typeabout enclosure typesLatch / ResetO/C Trip Level
CLA1337add to basket24Vdc10-100%1 - 10 sec1 pole C/O5A ac9NO
CLA3337add to basket24VdcNO1 - 10 sec1 pole C/O5A ac910-100%
CLA4337add to basket24VdcNO0.1 sec1 pole C/O5A ac910-100%


Trip Delay Timer
Where fitted the ‘Trip Delay Timer’ will inhibit the output contacts from releasing immediately a fault is detected.
The trip delay time is adjustable up to either 10 or 30 seconds depending on the model and will be either a ‘Standard’ delay or a ‘True’ delay type.
The 'Standard' delay type will require around 50% nominal supply voltage to be maintained for its operation, in the case of a total loss of power the unit
will trip with a minimal delay of approximately 0.5 seconds. This type of timer will allow the unit to ride through a short term voltage dip but not a total
power loss.
The 'True' delay timer is not dependent on the supply voltage for its operation. The timing function will be available in the case of either a partial or total
supply failure. This type of timer will allow the unit to ride through either a short term voltage dip or a total loss of power lasting up to 30 seconds.
Power On Delay Timer
Where fitted, the ‘Power On Delay Timer’ will delay the output contacts from energising immediately the supply voltage is applied to the unit for a period
of up to 30 seconds.
The supply voltage will have to satisfy the conditions set by the supply monitoring relay for a healthy supply continuously for the ‘Power On Delay’ timing
period before the output contacts will energise.
If the unit detects a fault and releases the output contacts the supply voltage will once again have to satisfy the requirements of a healthy supply continuously
for the ‘Power On Delay’ timing period before the output contacts will re-energise.