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China ARM5 series thermal magnetic type double-breaker mccb 200ka icu=ics Thermal ajustable type mccb 400VAC/415VAC/550VAC/ 690VAC/800VAC400A 630A 3/4 Poles Supplier, Factory

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China ARM5 series thermal magnetic type double-breaker mccb 200ka icu=ics Thermal ajustable type mccb 400VAC/415VAC/550VAC/ 690VAC/800VAC400A 630A 3/4 Poles Supplier, Factory

China ARM5 series thermal magnetic type double-breaker mccb 200ka icu=ics Thermal ajustable type mccb 400VAC/415VAC/550VAC/ 690VAC/800VAC400A 630A 3/4 Poles Supplier, Factory

Rated Current : 400A、500A、630A

Number Of Poles : 3P / 4P

Rated Working Voltage : 400V/690V

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Product Description

MCCB Highlights

The reasonable structure design of moving and fixed contacts makes the short circuit peak value and energy of this series of products I²t much smaller than expected.

MCCB contact mechanism detail 1

MCCB contact mechanism detail 2

Working Principle

The current flows in from the fixed contact 1, flows out from the fixed contact 2, through the moving, fixed silver contact and the moving contact. The moving contact quickly disconnects under the action of strong electric repulsion force (Holm force and Lorentz force) to improve the breaking speed.

Air Blowing Design

When the short circuit large current occur in the circuit, the gas producing parts will generate other gas under the high temperature of the arc, the air pressure in the contact unit box increases rapidly, and a high-speed air flow can be formed through the air outlet of the arc extinguishing chamber, which can effectively extinguish the arc.

ARM5

Main performance index of ARM5 series circuit breaker

Model		ARM5-630
Rated current In (A)		400A/500A/630A
Rated current of frame size Inm (A)		630A
Usage category		Category A
Rated ultimate short-circuit breaking capacity level		L		M		H
Number of poles (P)		3P	4P	3P	4P	3P	4P
Rated working voltage Ue (V)		400V/415V
Rated ultimate short-circuit breaking capacity Icu (kA)		85kA		150kA		200kA
Rated service short-circuit breaking capacity Ics (kA)		85kA		150kA		200kA
Rated working voltage Ue (V)		550V/690V
Rated ultimate short-circuit breaking capacity Icu (kA)		35kA		50kA		65kA
Rated service short-circuit breaking capacity Ics (kA)		35kA		50kA		65kA
Rated insulation voltage Ui (V)		1000V
Rated impulse withstand voltage Uimp (V)		8kV
Mechanical life (time)		7000
Electrical life (time) 400ln		1000
Arcing distance (mm)		0
Release type		Thermomagnetic
WLH (mm)	W	140	185	140	185	140	185
	L	123.5
	H	123.5

Overall and installation dimensions of circuit breaker

Circuit breaker 630 frame size installation safety interval

■ ARM5-630 front panel wiring (3P/4P)
X-X, Y-Y are the center of three-pole circuit breaker

Model	H	H1	H0	B	C	D
ARM5-630	123.5	167.1	-	-	-	-
ARM5E-630	123.5	167.1	-	-	-	-
ARM5EHU-630	123.5	167.1	-	-	-	-

ARM5-600dxn Installation Diagram

MCCB Production Line Real Showing

mccb parts device

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mccb parts device

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mccb moulding metal stamping production line

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mccb moulding metal stamping production line

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mccb parts processing device

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mccb parts processing device

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mccb parts device copper

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mccb molding office

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mccb molding office

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mccb team

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mccb team

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mccb automatic assembling device

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mccb automatic assembling device

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mccb moulding metal stamping warehouse

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mccb moulding metal stamping warehouse

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Frequently Asked Questions

Q: What is the rated current range of the ARM5-630 circuit breaker?

A: The rated current (In) of the ARM5-630 ranges from 400A, 500A, to 630A, with a frame size rated current (Inm) of 630A.

Q: What release mechanism does this series use?

A: The ARM5 series circuit breaker features a thermomagnetic release type for electrical safety protection.

Q: What are the ultimate short-circuit breaking capacities (Icu) for the different levels?

A: At a rated voltage of 400V/415V, the short-circuit breaking capacity (Icu) levels are: L Level at 85kA, M Level at 150kA, and H Level at 200kA.

Q: How does the contact structure design contribute to safety?

A: The reasonable structure design of moving and fixed contacts reduces the short-circuit peak value and I²t energy of this series, keeping it significantly smaller than expected during fault events.

Q: How does the built-in air blowing design assist in extinguishing electrical arcs?

A: When a large short-circuit current occurs, internal gas-producing parts generate gases under high temperatures. The rapid increase of air pressure inside the box creates a high-speed air flow through the extinguishing chamber, quickly blowing out the arc.

Q: What options are available for the number of poles?

A: The ARM5-630 circuit breaker is available in both 3P (3 Poles) and 4P (4 Poles) configurations.

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