The Guide - MEM Technical Support

Circuit Breaker Data

Memshield 2 L Frame

Type of Device
Rated Voltage
Frequency
Short Circuit Category = Moulded Case Circuit Breaker (MCCB)
= 690 Volts AC
= 50/60 Hertz
= Icu 50kA (415 Volts)

Maximum Earth Loop Impedance Zs (OHMS):
In (A)	Socket Outlet Circuits (0.4 secs)		Fixed Appliance Circuits (5 secs)
In (A)	Adjustable S/C set to min.	Adjustable S/C set to max.	Adjustable S/C set to min.	Adjustable S/C set to max.
400	0.120	0.060	0.120	0.060
630	0.076	0.038	0.076	0.038
800	0.060	0.030	0.060	0.030

Disconnection Time/Current Data Adjustable 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)
400	1500.00	2000.00	2000.00	2000.00	2000.00	2000.00
630	2800.00	3150.00	3150.00	3150.00	3150.00	3150.00
800	4000.00	4000.00	4000.00	4000.00	4000.00	4000.00

Disconnection Time/Current Data Adjustable 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)
400	1500.00	4000.00	4000.00	4000.00	4000.00	4000.00
630	2800.00	6300.00	6300.00	6300.00	6300.00	6300.00
800	4000.00	8000.00	8000.00	8000.00	8000.00	8000.00

MCCB Let Through Energy Data I²t (A² sec) L-Frame (Thermal/Mag)
Fault Level (A)	Rating
Fault Level (A)	400A	630A	800A
50000	12,500,000	12,500,000	12,500,000
40000	10,000,000	10,000,000	10,000,000
35000	9,000,000	9,000,000	9,000,000
30000	7,800,000	7,800,000	7,800,000
20000	6,000,000	6,000,000	6,000,000
15000	4,200,000	4,200,000	4,200,000
10000	2,500,000	2,500,000	2,500,000

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