The Guide - MEM Technical Support

Circuit Breaker Data

Memshield 2 ACB

Type of Device
Rated Voltage
Frequency
Short Circuit Category = Air Circuit Breaker (MCCB)
= 1000 Volts AC
= 50 Hertz
= Refer to ACB Catalogue

Maximum Earth Loop Impedance Zs (OHMS):
In (A)	Socket Outlet Circuits (0.4 secs)		Fixed Appliance Circuits (5 secs)
In (A)	S/C set to min.	S/C set to max.	S/C set to min.	S/C set to max.
80	3.000	0.300	3.000	0.300
160	1.500	0.150	1.500	0.150
250	0.960	0.096	0.960	0.096
320	0.750	0.075	0.750	0.075
500	0.480	0.048	0.480	0.048
630	0.380	0.038	0.380	0.038
1000	0.240	0.024	0.240	0.024
1250	0.192	0.0192	0.192	0.0192
1600	0.150	0.015	0.150	0.015
2000	0.120	0.012	0.120	0.012
2500	0.096	0.0096	0.096	0.0096
3200	0.075	0.0075	0.075	0.0075
4000	0.060	0.006	0.060	0.006

Disconnection Time/Current Data S/C Set to Min:
Disconnection Time (s)	60.00	10.00	5.00	1.00	0.40	0.10
In (A)	Disconnection Current (A)
80	80.00	80.00	80.00	80.00	80.00	80.00
160	160.00	160.00	160.00	160.00	160.00	160.00
250	250.00	250.00	250.00	250.00	250.00	250.00
320	320.00	320.00	320.00	320.00	320.00	320.00
500	500.00	500.00	500.00	500.00	500.00	500.00
630	630.00	630.00	630.00	630.00	630.00	630.00
1000	1000.00	1000.00	1000.00	1000.00	1000.00	1000.00
1250	1250.00	1250.00	1250.00	1250.00	1250.00	1250.00
1600	1600.00	1600.00	1600.00	1600.00	1600.00	1600.00
2000	2000.00	2000.00	2000.00	2000.00	2000.00	2000.00
2500	2500.00	2500.00	2500.00	2500.00	2500.00	2500.00
3200	3200.00	3200.00	3200.00	3200.00	3200.00	3200.00
4000	4000.00	4000.00	4000.00	4000.00	4000.00	4000.00

Disconnection Time/Current Data S/C Set to Max:
Disconnection Time (s)	60.00	10.00	5.00	1.00	0.40	0.10
In (A)	Disconnection Current (A)
80	204.00	480.00	800.00	800.00	800.00	800.00
160	408.00	960.00	1600.00	1600.00	1600.00	1600.00
250	674.00	1500.00	2500.00	2500.00	2500.00	2500.00
320	816.00	1920.00	3200.00	3200.00	3200.00	3200.00
500	1275.00	3000.00	5000.00	5000.00	5000.00	5000.00
630	1605.00	3780.00	6300.00	6300.00	6300.00	6300.00
1000	2550.00	6000.00	10000.00	10000.00	10000.00	10000.00
1250	3188.00	7500.00	12500.00	12500.00	12500.00	12500.00
1600	4080.00	9600.00	16000.00	16000.00	16000.00	16000.00
2000	5100.00	12000.00	20000.00	20000.00	20000.00	20000.00
2500	6375.00	15000.00	25000.00	25000.00	25000.00	25000.00
3200	8160.00	19200.00	32000.00	32000.00	32000.00	32000.00
4000	10200.00	24000.00	40000.00	40000.00	40000.00	40000.00

Maximum Let Through Energy:
Prospective Short Circuit (kA)	0.1	0.2	0.5	1.0	2.0	5.0	10.0	20.0	35.0	40.0	50.0	65.0	85.0
In (A)	I²t (A² sec)
630	800	-	20000	8000	-	2000000	8000000	30000000	100000000	-	-	-	-
1250	-	3000	-	8000	-	2000000	8000000	30000000	-	120000000	-	320000000	-
1600	-	3000	-	8000	-	2000000	8000000	30000000	-	120000000	-	320000000	-
2000	-	3000	-	8000	-	2000000	8000000	30000000	-	120000000	-	320000000	-
2500	-	3000	-	8000	-	2000000	8000000	30000000	-	120000000	-	320000000	-
3200	-	-	-	-	300000	2000000	8000000	30000000	-	120000000	200000000	-	600000000
4000	-	-	-	-	300000	2000000	8000000	30000000	-	120000000	200000000	-	600000000

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