GENERAL

RGM2-400 moulded case circuit breaker (hereafter simply referred to as breakers), the rated insulation voltage of the breakers is 690V. In the circuit of AC50Hz/60Hz, rated working voltage 600V or below ,rated current from 250A to 400A, the breakers take the role of infrequent turn-on or turn-off .The breakers have overload and short-circuit protection devices ,so as to protect the circuit and the power equipment against damage.

The breakers according to the rated maximal value to short-circuit breaking ability(Icu),would be classified type E&S.

The breakers could be installed vertically or horizontally.

The breakers have isolating function and its corresponding symbol is shown as .

The breakers comply with the demands of the following standards:

EN/IEC60947-1 Low-voltage switchgear and controlgear——Part1：General rules.

EN/IEC60947-2 Low-voltage switchgear and controlgear——Part 2：Circuit-breaker.

NORMAL SERVICE AND MOUNTING CONDTIONS

The ambient air temperature does not exceed ＋40℃ and its average over a period of 24h does not exceed ＋35℃,the lower limit of the ambient air temperature is －5℃.

The altitude of the site of installation does not exceed 2000m.

The relative humidity of the air does not exceed 50% at a maximum temperature of +40℃ , higher relative humidities may be permitted at lower temperature,e.g.90% at +20℃. Special measures may be necessary in cases of occasional condensation due to variations in temperature.

Pollution degree 3.

Installing category: III for the main circuit , and II for other auxiliary and control circuits.

Be suitable in electromagnetic environment A.

There must be not any explosive medium, and there must be not any gas which would corrode metal or any conducting dust which would destory the insulation

The place would not be invaded by rain and snow. 

STRUCTURE INTRODUCTION

MAIN TECHNICAL PERFORMANCE INDEX

Frame			400
Type			RGM2-402E	RGM2-403E	RGM2-404E	RGM2-402S	RGM2-403S	RGM2-404S
Pole number			2	3	4	2	3	4
Rated current(A)                         In			250、300、350、400			250、300、350、400
Rated insulation voltage(V)        Ui			AC690			AC690
Rated impulse withstand vol(V)  Uimp			6000			6000
Rated operational voltage (V)     Ue			AC600			AC600
Rated ultimate short-circuit     breaking ability      (kA) Icu		230V	35	35	35	50	50	50
		415V	25	25	25	35	35	35
		500V	18	18	18	25	25	25
		600V	18	18	18	22	22	22
Operating short-circuit breaking ability    Ics (%Icu)			50			50
Arc-over distance（mm）			≯100			≯100
Category			A			A
Over-current tripping device			Thermal-magnetic			Thermal-magnetic
Comply standards			EN/IEC60947-2			EN/IEC60947-2
Operational performance (times)	Mechanical life		4000			4000
	Electrical life		1000			1000
Outline dimensions(mm)		L	257			257
		W	140	140	185	140	140	185
		H	113			113

OUTLINE AND MOUNTING DIMENSIONS

Outline dimensions

Extension conductor dimensions

Aperture dimensions of the sub-panel