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Home / Products / Molded Case Circuit Breaker (MCCB) / 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
  • 630A 3P MCCB with CE Over And Under Voltage Protector
Molded Case Circuit Breaker (MCCB)

630A 3P MCCB with CE Over And Under Voltage Protector

Product Features

Suitable for common AC power distribution voltage environments, and can be flexibly applied to three-phase circuits with different voltage requirements. The circuit breaker's ability to withstand impulse voltages such as lightning strikes ensures equipment safety under transient high-voltage interference. In the event of a short-circuit fault, it can safely interrupt the maximum short-circuit current, effectively disconnecting the faulty circuit and protecting system equipment. It adopts a molded case structure, possessing good insulation performance and mechanical strength. Easy to operate, the "ON" indicator clearly shows the closed circuit state. It can effectively handle overload and short-circuit faults in power distribution lines, quickly disconnecting the circuit and protecting downstream electrical equipment. Widely used in low-voltage power distribution systems in industrial plants, commercial buildings, and other places, providing reliable protection for electrical safety and stable system operation.

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Rated Voltage (Ui)

 800V

Operating Voltage (Ue)

 AC400/690V

Rated Impulse Withstand Voltage (Uimp)

 8kV

Rated Current (In)

 125A

Short-Circuit Breaking Capacity

 Ultimate Short-Circuit Breaking Capacity (Icu) 25kA

Environment and Frequency

 Applicable ambient temperature up to +40℃, rated frequency 50Hz, suitable for the environmental and power frequency conditions of conventional industrial and civil power distribution systems.

Standard Compliance

 Complies with GB/T 14048.2 standard. Product performance and safety indicators meet relevant national standards, ensuring reliable quality.


Technical Data

Type CHM9-160L CHM9-250L
Frame (A) 160 250
Number of poles 3,4 3,4
Rated current (A) 63, 80, 100, 125, 140, 160 100, 125, 140, 160, 180, 200, 225, 250
Rated voltage Ue (V) AC400V AC400V
Rated insulation voltage Ui (V) AC800V AC800V
Short-circuit breaking capacity Icu/Ics (kA)（AC400V） 25/18 25/18
Operation life (cycle)（ON） 1000 1000
Operation life (cycle)（OFF） 7000 7000
Motor-driven operation ● ●
External rotary handle ● ●
Automatic tripping device Thermo-magnetic Thermo-magnetic
Type CHM9-400L CHM9-630L CHM9-800L
Frame (A) 400 630 800
Number of poles 3,4 3,4 3,4
Rated current (A) 250, 315, 350, 400 500, 630 500, 630, 700, 800
Rated voltage Ue (V) AC400V AC400V AC400V
Rated insulation voltage Ui (V) AC800V AC800V AC800V
Short-circuit breaking capacity Icu/Ics (kA)（AC400V） 35/25 50/35 50/35
 Operation life (cycle)（ON） 1000 1000 500
Operation life (cycle)（OFF） 4000 4000 2500
Motor-driven operation ● ● ●
External rotary handle ● ● ●
Automatic tripping device  Thermo-magnetic Thermo-magnetic Thermo-magnetic

●Means accessory as option



Characteristic Feature

1.Inverse time breaking action property of the over current release of the breaker (for power distribution) at the status that all poles and electrified simultaneously under abrent temp 40℃.

Test current Current time Conventional time Initial status
In≤63 63<In
Conventional non-trip current 1.05 ≥1h ≥2h Cold status
Conventional trip current 1.3 <1h <2h Hot status

2.When ambient temperature is +40℃ for electrmotor protection breaker, power on for every pole, inverse time limit characteristic of no temperature compensation is in the following sheet.


Test current Current time Conventional time Initial status
In≤800
Conventional non-trip current 1 ≥2h Cold status
Conventional trip current 1.2 <2h Hot status

3.Action property of the short-circuit release of the breaker
◆ Instant trip (for power distribution) I=10In
◆ Instant trip (for motor protection) I=12In
◆ Current setting accuracy ±20%



Front Connection & Overall



Outline Overall and Installing Dimensions



Moulded case Circuit breaker Overall dimensions Installing dimensions Bolt
A A1 A2 A3 B B1 B2 B3 B5 B6 H H1 H2 H3 H4 H5 H6 A4 B4
3P 4P 3P 4P 3P 4P 3P 3P
CHM9-125L 90 120 60 90 - - - 155 134 103 50 50 - 94 72 4 68 61 41 24 30 132 M8
CHM9-250L 105 140 70 105 - - - 165 144 103 50 100 - 96 72 4 68 61 46 24 35 126 M8
CHM9-400L 140 185 88 132 140 196 112 168 257 230 179 90 110 43 155 107 5 105 97 64 36 44 194 M10
CHM9-630L 140 185 88 132 140 196 112 168 257 230 179 90 110 42 155 107 5 105 97 64 36 44 194 M10
CHM9-800L 210 280 140 210 180 250 140 210 275 243 192 90 110 87 155 107 5 104 97 65 24 70 242.5 M12




Related Products

Chengxi Electric Group Co., Ltd.

Chengxi Electric Group Co., Ltd.

Chengxi Electric Group Co., Ltd. is an OEM/ODM 630A 3P MCCB with CE Over And Under Voltage Protector Company and Wholesale 630A 3P MCCB with CE Over And Under Voltage Protector Supplier. Equipped with modern industrial factory buildings and office facilities, we specialize in the production and operation of circuit breakers, dual power supplies (ATS), AC contactors, and other modern low-voltage electrical products. The company implements a complete and scientific quality management system. Through good faith and strong technical capabilities, our products have earned widespread recognition in the industry. ChengXi Electric adheres to a management philosophy of "Integrity, Pragmatism, Science, Rigor, and Solidarity," always focusing on customer needs and dedicated to the field of low-voltage electrical equipment. Relying on the power system and driven by market demands, ChengXi Electric has provided high-quality products and services to a diverse range of users over the years. We continue to expand our market presence, and our products are widely used in numerous domestic sectors, including electric power systems, nuclear power, national defense, petrochemicals, metallurgy, coal, railways, and more. They play a vital role in many national key projects, winning the trust of a growing number of customers and achieving an excellent reputation within the industry. The company always aims at the global technological frontier, focusing on being a trendsetter in low-voltage apparatus. We strive to promote the development and progress of electric power transmission and distribution, aiming to build a first-class international electrical brand. ChengXi is willing to collaborate with partners worldwide to create a brilliant future together.

Certificate

  • ATTESTATION OF CONFORMITY
    ATTESTATION OF CONFORMITY
  • ATTESTATION OF CONFORMITY
    ATTESTATION OF CONFORMITY
  • Business license
    Business license
  • Group standard drafting unit
    Group standard drafting unit
  • AAA-rated credit enterprise
    AAA-rated credit enterprise
  • Wenzhou Enterprise Technology Research and Development Center
    Wenzhou Enterprise Technology Research and Development Center
  • Star Enterprise
    Star Enterprise
  • High-tech enterprises
    High-tech enterprises

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