Complementary
Long-time pick-up adjustment type Ir (thermal protection)	Adjustable 9 settings
[Ir] long-time protection pick-up adjustment range	160...400 A
Long-time protection delay adjustment type tr	Adjustable
[tr] long-time protection delay adjustment range	15…400 s at 1.5 x Ir; 0.35…11 s at 7.2 x Ir; 0.5…16 s at 6 x Ir
Thermal memory	20 minutes before and after tripping
Short-time protection pick-up adjustment type Isd	Adjustable
[Isd] Short-time protection pick-up adjustment range	1.5...10 x Ir
Short-time protection delay adjustment type tsd	Adjustable
[tsd] Short-time protection delay adjustment range	0…0.4 s I²t=off; 0.1…0.4 s I²t=on
Instantaneous protection pick-up adjustment type Ii	Adjustable
[Ii] instantaneous protection pick-up adjustment range	1.5...12 x In
Earth-leakage protection	Integrated
Earth-leakage protection class	Class A
Earth-leakage protection sensitity adjustment type IΔn	Adjustable
[IΔn] earth-leakage protection sensitivity adjustment range	0.3 A; 0.5 A; 1 A; 3 A; 5 A; 10 A
Earth-leakage protection specific mode	OFF using the IΔn rotary switch
Earth-leakage protection time delay adjustement type Δt	Adjustable
[Δt] Earth-leakage protection time delay adjustment range	0 ms; 60 ms; 150 ms; 500 ms; 1 s
Zone selective interlocking ZSI	Without
Local signalling	Flashing LED (green) for ready to operate; LED 105 % Ir (red) for overload; LED 90 % Ir (orange) for overload
Display type	LCD display
Type of measurement	Energy meter
Communication of data	Maintenance indicators; Instantaneous and demand values; Time-stamped histories and event tables; Power quality; Energy metering; Test reports; Maximeters/minimeters; Demand current and power; Earth leakage current; Protection and alarm settings
Contractual warranty
Warranty (in months)	18
Environment
Standards	EN/IEC 60947-2
Electrical shock protection class	Class II
Pollution degree	3 conforming to IEC 60947-1
IP degree of protection	IP40 conforming to IEC 60529
Ambient air temperature for operation	-25…70 °C
Ambient air temperature for storage	-40…85 °C
Logistical informations
Country of origin	CN
Main
Range	ComPacT
Range of product	ComPacT NSX400...630
Product or component type	Trip unit
Trip unit name	MicroLogic 7.3 E AL
Trip unit technology	Electronic
Range compatibility	ComPacT NSX630; ComPacT NSX400
Device application	Distribution
Poles description	3P
Protected poles description	3D
Trip unit protection functions	LSI
Protection type	L : for overload protection (long time); S : for short time short-circuit protection; I : for instantaneous short-circuit protection
Trip unit rating	400 A at 40 °C
[Ue] rated operational voltage	440 V AC 50/60 Hz
Network type	AC
Network frequency	50/60 Hz
Circuit breaker mounting mode	Fixed
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	17.200 cm
Package 1 Width	21.300 cm
Package 1 Length	25.000 cm
Package 1 Weight	1.886 kg
Unit Type of Package 2	S03
Number of Units in Package 2	2
Package 2 Height	30.000 cm
Package 2 Width	30.000 cm
Package 2 Length	40.000 cm
Package 2 Weight	4.112 kg

This MicroLogic 7.3 E AL (Energy) 3-pole electronic trip unit is a Micrologic 7.3 E electronic trip unit used on ComPacT NSX 400/630 circuit breakers. This electronic trip unit with a rating of 400 A is the best choice for all standard and special applications. It has customizable long-term protection against overloads. It also offers customizable short-time delayed short-circuit protection and instantaneous short-circuit protection. MicroLogic 7.3 E AL offers a residual current alarm without tripping, available on the terminal block. MicroLogic 7.3 E AL indicates overloads with alarm LEDs. The green Ready LED flashes when the circuit breaker is ready to trip. MicroLogic 7.3 E AL is equipped with a display module that provides energy measurements and allows fine adjustment. This product is part of our EcoStruxure Power architecture when combined with the PowerTag NSX and ComPacT NSX basic switches.