China Suppliers ARXM3 Series MCCB 400V/690V Thermal Magnetic Type 3/4 Poles 63A 100A 125A Factory
MCCB Highlights
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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).
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ARM3 accessories are modularized, safe and reliable, with small volume, high breaking capacity, short flashover, high vibration resistance, etc.
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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.
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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.
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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.
Frequently Asked Questions (FAQ)
What are the primary protective functions of this MCCB?
The molded case circuit breaker (MCCB) features overload, short circuit, and undervoltage protection functions to safeguard electrical lines and power equipment against damage.
How are the MCCBs classified by short-circuit breaking capacity?
They are classified into four distinct types based on their rated ultimate short-circuit breaking capacity: C (economic type), L (standard type), M (medium breaking type), and H (high breaking type).
What environmental standards do these MCCBs comply with?
These MCCBs meet the testing requirements of GB/T2423 and IEC60947 standards, meaning they can effectively withstand humid air, salt mist, oil mist, and mold environments.
What is the unique feature of the ARXM3 4-pole specification?
The 4-pole ARXM3-125~630 MCCB (A/B circuit breaker type) features a unique "overload alarm without tripping" function, ensuring uninterrupted power supply in compliance with GB50054 Article 6.3.6.
What level of mechanical vibration can this MCCB withstand?
It is designed to withstand mechanical vibrations at frequencies of 2Hz to 13.2Hz with a displacement of ±1mm, and frequencies of 13.2Hz to 100Hz with an acceleration of ±0.7g.

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