MCCB Highlights

• The molded case circuit breaker has overload, short circuit and undervoltage protection functions, and can protect lines and power equipment from damage.
• According to the rated ultimate short-circuit breaking capacity, the mccbs are classified into four types: C (economic type), L (standard type), M (medium breaking type) and H (high breaking type).
• ARM3 accessories are modularized, safe and reliable, with small volume, high breaking capacity, short flashover, high vibration resistance, etc.
• The moulded case circuit breaker has passed the test requirements of GB/T2423 and IEC60947 standard, and can withstand the influence of humid air, salt mist, oil mist and mold.
• The neutral pole type of ARXM3-125~630 mccb is A/B circuit breaker when it is of 4 poles specification, which can have a unique function of "overload alarm without tripping" to ensure the continuity of power supply and meet the requirements of Article 6.3.6 of GB50054.
• It is required to withstand mechanical vibration with frequency of 2Hz~13.2Hz, displacement of ± 1mm, frequency of 13.2Hz~100Hz and acceleration of ± 0.7g.

Main performance index of ARXM3 series circuit breaker

Model		ARXM3-125
Rated current In (A)		16A/20A/25A/32A/40A/50A/63A/80A/100A/125A
Rated current of frame size Inm (A)		125A
Usage category		Category A
Rated ultimate short-circuit breaking capacity level		C		S		L		M		H
Number of poles (P)		3P	4P	3P		3P	4P	3P	4P	4P	4P
Rated working voltage Ue (V)		400V
Rated ultimate short-circuit breaking capacity Icu (kA)		35kA		25kA		50kA		70kA		100kA
Rated service short-circuit breaking capacity Ics (kA)		22kA		18kA		35kA		50kA		70kA
Rated working voltage Ue (V)		690V
Rated ultimate short-circuit breaking capacity Icu (kA)		10kA		20kA		20kA		20kA		20kA
Rated service short-circuit breaking capacity Ics (kA)		6kA		10kA		10kA		10kA		10kA
Rated insulation voltage Ui (V)		1000V
Rated impulse withstand voltage Uimp (V)		8kV
Mechanical life (time)		8500
Electrical life (time)		1500
Arcing distance (mm)		≤50
W*L*H (mm)	3P	75*132.5*65		92*150*70		92*150*87
	4P	100*132.5*65		/		122*150*87
	package 3p	110*170*110		110*170*110		108*166*128
	package 4p	130*175*130		/		130*173*128
	weight 3P	1024g		1104g		1603g
	weight 4P	1334g		/		2000g

Overall and installation dimensions of circuit breaker

■ ARXM3-125C, front panel wiring (3P, 4P)

X-X, Y-Y are the center of three-pole circuit breaker

■ ARM3-125S, ARM3-125 (L,M,H), ARXM3-125S , ARM3E-125(M,H) plug-in rear panel wiring(3P, 4P)

X-X, Y-Y are the centers of three-pole circuit breaker

Circuit breaker 125 frame size installation safety interval

■ Front panel wiring (3P, 4P)

X-X, Y-Y are the center of three-pole circuit breaker

■ Rear panel wiring (3P, 4P)

X-X, Y-Y are the center of three-pole circuit breaker

■ Plug-in rear panel wiring (3P, 4P)

X-X, Y-Y are the centers of three-pole circuit breaker

MCCB Production Line Real Showing

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mccb team

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mccb assembling line

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mccb automatic assembling device

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mccb molding office

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mccb moulding metal stamping office

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mccb moulding metal stamping production line

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mccb moulding metal stamping warehouse

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mccb parts processing device

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