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 Square D > On-line Catalog > Products > Relays and Timers > Current Measurement Relays
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Current Measurement Relays

RM4JA


Power Supply Circuit Specifications
Type of Relay
RM4JA01
RM4JA31 and RM4JA32
Rated Supply
Voltage (Un)
Vac 50/60 Hz
24 Vac  
110–130 Vac  
220–240 Vac  
24–240 Vac  
110–130 Vac  
220–240 Vac  
380–415 Vac  
Vdc
. . .  
. . .  
. . .  
24–240 Vdc  
. . .  
. . .  
. . .  
Average
Consumption at Un
Vac
2 VA  
1.9–3.3 VA  
2.7–3.5 VA  
1.5–3.3 VA  
1.9–3.3 VA  
2.7–3.4 VA  
2.7–3 VA  
Vdc
. . .  
. . .  
. . .  
1.2 W  
. . .  
. . .  
. . .  


Output Relay and Operating Specifications
Type of Relay
RM4JA01
RM4JA31 and RM4JA32
Number of C/O Contacts SPDT
1
2
Output Relay State
Energized when:
current measured > threshold setting
Energized when:
current measured > threshold setting (">" function)
current measured < threshold setting ("<" function)
Setting Accuracy of the
Switching Threshold
As % of the full scale value: ± 5 %
Switching Threshold Drift
0.06 % per degree centigrade, depending on the permissible ambient temperature
0.5 %, within the supply voltage range (0.85–1.1 Un)
Hysteresis (adjustable)
5–30 % of the current threshold setting
Setting Accuracy of the Time Delay
As % of the full scale value: ± 10 %
Time Delay Drift
. . .
0.07 % per degree centigrade, depending on temperature
0.5 %, within the supply voltage range (0.85–1.1 Un)
Measuring Cycle
80 ms
Approvals/Standards
Conforming to Standards
IEC 60255-6 EN 60255-6
Temperature Ratings
Storage
-40° F to 185° F (-40° C to 85° C)
Operational
-4° F to 149° F (-20° C to 65° C)
Supply Voltage Range
-15 to +10% rated of supply voltage


Measuring Input Specifications
Internal Input Resistance and Permissible Overload Depending on the Current Measurement Ranges
Type of Relay
RM4JA01 and RM4JA31
RM4JA32
Measurement Range 50-60 Hz Vac and Vdc
3–30 mA
10–100 mA
0.1–1 A
0.3–1.5 A
1–5 A
3–15 A
Internal Input Resistance Ri
33 Ω
10 Ω
1 Ω
0.06 Ω
0.02 Ω
0.006 Ω
Permissible Continuous Overload
0.05 A
0.15 A
1.5 A
2 A
7 A
20 A
Permissible Non Repetitive Overload for t 3 s
0.2 A
0.5 A
5 A
10 A
15 A
100 A


Current Measurement Relays: Overcurrent Detection
Time Delay
Current to be Measured
Depending on Connection
VAC or VDC
Width
IN
Width
mm
Output Relay
Supply Voltage
50/60 Hz
Catalog Number
Price
None
3–30 mA
10–100 mA
0.1–1 A
0.89  
22.5  
1 C/O SPDT  
24 Vac
$279.  
110–130 Vac
279.  
220–240 Vac
279.  


Current Measurement Relays: Overcurrent or Undercurrent Detection
Adjustable Time Delay
Current to be Measured
Depending on Connection
VAC or VDC
Width
IN
Width
mm
Output Relay
Supply Voltage
50/60 Hz
Catalog Number
Price
0.05–30 s
3–30 mA
10–100 mA
0.1–1 A
0.89  
22.5  
2 C/O DPDT  
24–240 Vac/dc
$362.  
110–130 Vac
311.  
220–240 Vac
311.  
380–415 Vac
311.  
0.3–1.5 A
1–5 A
3–15 A
1.77  
45  
2 C/O DPDT  
24–240 Vac/dc
362.  
110–130 Vac
311.  
220–240 Vac
311.  
380–415 Vac
311.  

For addtional information, reference Catalog #8430CT0001R6/02.



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