Porduct Overview

EKM8E series offers a range of MCCBs with electronic type trip unit, providing LSI* protection. These MCCBs are suitable for use with AC 50Hz, rated voltage of 690V and below, and rated current up to 2000A.

Electronic trip units in comparison with thermomagnetic trip units, they allow a more precise setting both in terms of trip times as well as in terms of current thresholds to meet the installation requirements better.

Panel Adjustable knobs explain:

IR: Overload long delay setting current
Isd: Short-circuit short delay setting current
Ii: Short-circuit instantaneous setting current
tR: Overload long delay setting time
tsd: Short-circuit short delay setting time
Ip: Overload pre-alarm setting current

Technical parameters

Technical Data

Table 1

Frame size Inm(A)		160		250
Rated operational current In(A)		32,63,100,125,160		160,250
Tripper rated current Ir(A)		63,75,80,90,100,125,140,150,160		100,125,140,150,160,180,200,225,250
Rated insulation voltage Ui(V)		1000
Rated impulse withstand voltage Uimp(kV)		8
Rated operational voltage Ue(V)		400/690
Breaking capacity code		S	H	S	H
Number of poles		3P, 4P
Rated service short circuit breaking capacity Ics (kA)	400/415V	18	25	18	25
Rated ultimate short circuit breaking capacity Icu (kA)		25	35	25	35
Utilization category		A		B
Trip unit type		Electronic
Mechanical life (times)		8500
Electrical life (times)		1500

Table 2

Frame size Inm(A)		400	630	800
Rated operational current In(A)		400	500,630	630,800
Tripper rated current Ir(A)		160,180,200,220,240,280,320,360,400	250,280,315,350,380,440,500.570,630	320,400,450,500,550,630,700,750,800
Rated insulation voltage Ui(V)		1000
Rated impulse withstand voltage Uimp(kV)		8
Rated operational voltage Ue(V)		400/690
Breaking capacity code		H	H	H
Number of poles		3P, 4P
Rated service short circuit breaking capacity Ics (kA)	400/415V	35	35	50
Rated ultimate short circuit breaking capacity Icu (kA)		50	50	65
Utilization category		B	B	B
Trip unit type		Electronic
Mechanical life (times)		4000	4000	2500
Electrical life (times)		1000	1000	500

Table 3

Frame size Inm(A)		1250	1600	2000
Rated operational current In(A)		630,800,1000,1250	800,1000,1250,1600	1000,1250,1600,2000
Tripper rated current Ir(A)		500,800,700,800,900,1000,1100,1200,1250	630,800,900,1100,1250,1400,1500,1600	800,1000,1250,1400,1500,1600,1800,1900,2000
Rated insulation voltage Ui(V)		1000
Rated impulse withstand voltage Uimp(kV)		8
Rated operational voltage Ue(V)		400/690
Breaking capacity code		H	H	H
Number of poles		3P, 4P
Rated service short circuit breaking capacity Ics (kA)	400/415V	50	50	50
Rated ultimate short circuit breaking capacity Icu (kA)		65	85	85
Utilization category		B	B	B
Trip unit type		Electronic
Mechanical life (times)		2500	2500	2500
Electrical life (times)		500	500	500

Download Files

Document currently available in English only.

Document Type

Document Name

Size

Product Catalog

EKM8E-Electronic-Adjustable-Type-MCCB

1.31MB