Molded Case Circuit Breaker - MCCB

XYCM1 MCCB Molded Case Circuit Breaker transparent

XYCM1 MCCB Molded-Case-Circuit-Breaker 63A-1250A Transparent case

The JINGE CM1 Series Transparent Molded Case Circuit Breaker (MCCB) is a heavy-duty industrial-grade power protection device, designed and manufactured referring to the high-standard design specifications of CHINT, DELIXI, TENGEN and international mainstream low-voltage electrical brands. This transparent-shell MCCB is specially developed for industrial main power incoming lines, distribution branch circuits and motor load protection, balancing professional industrial performance, visual safety inspection and long-term operational stability.

Different from ordinary household circuit breakers, the XYCM1 transparent MCCB focuses on harsh industrial and engineering power supply environments, featuring high breaking capacity, strong overload resistance, excellent arc extinction performance and durable mechanical structure. The visible transparent shell design allows engineers to directly observe the internal contact working status, quickly judge circuit faults, greatly reduce daily maintenance difficulty and after-sales troubleshooting costs. Fully compliant with IEC 60947-2 international industrial standards, it supports complete CE certification documents, ensuring smooth customs clearance and stable long-term operation for global industrial projects and electrical distributors.

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Core Product Advantages & Pain Point Solutions

– Visual Transparent Shell Design for Easy Maintenance: The transparent molded shell structure makes internal contacts and working state clearly visible, solving the industry pain point of traditional opaque MCCB that cannot quickly check hidden faults, saving maintenance time and reducing on-site inspection costs for engineering teams.
– High Industrial Breaking & Short-Circuit Resistance Performance: Adopts optimized arc extinction system and high-strength conductive components, with high rated short-circuit breaking capacity, effectively avoiding equipment burnout, power grid impact and project shutdown losses caused by sudden short-circuit faults in industrial heavy-load circuits.
– Strong Overload & Thermal Stability for Harsh Environments: Matches professional thermo-magnetic tripping system, stable tripping action without misoperation or refusal; adapts to high temperature, dust and long-term continuous power supply working conditions, solving the problem of frequent tripping or failure of inferior breakers in factory continuous production.
– Complete Protection Functions for Full-Circuit Safety: Integrates overload long-time delay protection, short-circuit instantaneous protection and phase failure protection (optional), effectively protecting power distribution equipment, production machinery and personal safety, avoiding project economic losses caused by unprotected circuit faults.
– Dual Installation & Flexible Wiring Adaptability: Supports vertical and horizontal dual installation methods, compatible with various industrial distribution cabinets and power box installation standards worldwide; diversified wiring methods meet different on-site engineering wiring requirements, strong compatibility and wide applicability.
– High-Grade Flame-Retardant & Impact-Resistant Material: Adopts industrial reinforced engineering plastic shell, with flame retardant, high temperature resistance, impact resistance and anti-aging characteristics, not easy to deform and burn in harsh industrial environments, long service life and low replacement frequency.
– Standardized Production & Complete Certification Support: Produced in strict accordance with IEC industrial standards, with complete test reports and CE certification files, solving the pain points of difficult customs clearance and unqualified project acceptance for overseas importers and engineering contractors.

Technical Specifications

Item XYCM1-63 XYCM1-100 XYCM1-125 XYCM1-250 XYCM1-400 XYCM1-630 XYCM1-800
Frame Current Inm (A) 63 100 125 250 400 630 800
Rated Current In (A) (6), 10, 16, 20, 25, 32, 40, 50, 63 10, 16, 20, 32, 40, 50, 63, 80, 100 80, 100, 125 100, 125, 160, 180, 200, 225, 250 225, 250, 315, 350, 400 400, 500, 630 630, 700, 800
Rated Insulation Voltage Ui (V) 500 690 800 800 690 690 690
Rated Operating Voltage Ue (V) 400 400 230 / 400 230 / 400 400 400 400
Rated Impulse Withstand Voltage Uimp (kV) 6 6 8 8 6 6 6
No. of Poles 3 / 4 3 / 4 2 / 3 / 4 2 / 3 / 4 3 / 4 3 / 4 3 / 4
Breaking Class L / M L / M L / M / H L / M / H L / M L / M L / M
Ultimate Breaking Capacity Icu (kA) AC400V 10 / 15 / 35 35 / 50 35 / 50 / 65 35 / 50 / 65 45 / 65 45 / 65 50 / 65
Service Breaking Capacity Ics (kA) AC400V 5 / 10 / 25 25 / 30 25 / 30 / 50 25 / 30 / 50 22.5 / 32.5 22.5 / 32.5 25 / 32.5
Arc Flash Distance (mm) ≤50 ≤50 ≤50 ≤50 ≤100 ≤100 ≤100
Operating Cycles / Hour 120 120 120 120 60 60 20
Mechanical Life With Load 4000 3000 3000 1500 1500 1000 500
Mechanical Life No Load 6000 7000 7000 6500 6500 4000 2500

Working Condition

  • Ambient air temperature: The upper limit does not exceed +40℃, the lower limit is not lower than -5℃, and the average temperature within 24 hours does not exceed +35℃;
  • Altitude: The altitude of the installation site does not exceed 2000m;
  • Atmospheric conditions: The relative humidity of air at the installation site does not exceed 50% at the maximum temperature of +40℃, and a higher relative humidity is allowed at lower temperatures. The monthly average maximum relative humidity of the wettest month is 90%, while the monthly average minimum temperature of the month is +25℃, taking into account the condensation on the product surface due to temperature changes;
  • Pollution degree: Pollution degree is Grade 3;
  • Installation conditions: Installed in a place without significant shaking, impact and vibration, can be installed vertically or horizontally, and the inclination of the installation direction from the vertical direction does not exceed 5°;
  • Power supply conditions: The voltage deviation does not exceed ±10% of the rated working voltage, and the frequency deviation does not exceed ±5% of the rated frequency.

Application Scenarios

CM1 transparent industrial molded case circuit breaker is positioned for professional industrial and engineering high-power power distribution scenarios, widely used in industrial factory workshops, manufacturing production lines, power plant power distribution rooms, mining and metallurgy enterprises, petrochemical projects, commercial building main power distribution systems, construction site temporary power supply, pumping station power equipment and municipal infrastructure projects. It is mainly used for main incoming line protection of power distribution cabinets and branch circuit protection of heavy-duty mechanical equipment, providing stable and reliable primary safety guarantee for industrial power supply systems.
Aiming at the common pain points of industrial users such as unstable power grid, heavy long-term load, difficult fault detection and high maintenance cost, this MCCB adopts visual transparent design and industrial-grade durable structure, which can effectively reduce equipment failure rate and later maintenance pressure. For global electrical engineering contractors, power system integrators and industrial electrical distributors, XYCM1 series transparent MCCB is a cost-effective and high-reliability industrial power protection solution that balances brand quality, stable performance and convenient after-sales management.

Characteristics of Overcurrent Protection

Overcurrent Inverse Time Protection Characteristics for Distribution Protection

Test Current Name I/Ih Conventional Time (Ih≤63) Conventional Time (63<In≤250) Conventional Time (In≥250) Initial State Ambient Temperature
Conventional Non-Tripping Current 1.05 ≥1h ≥2h ≥2h Cold State +30℃
Conventional Tripping Current 1.30 <1h <2h <2h Hot State +30℃
Recoverable Time 3.0 5s 8s 12s Cold State +30℃

Overcurrent Inverse Time Protection Characteristics for Motor Protection

Test Current Name I/Ih Conventional Time (10≤In≤250) Conventional Time (250≤In≤630) Initial State Ambient Temperature
Conventional Non-Tripping Current 1.0 ≥2h ≥2h Cold State +40℃
Conventional Tripping Current 1.2 <2h <2h Hot State +40℃
– 1.5 ≤4min ≤8min Cold State +40℃
Recoverable Time 7.2 4s≤T≤10s 6s≤T≤20s Hot State +40℃

Setting Value of Overcurrent Release Under Short Circuit Condition

Inm (A) For Distribution For Motor Protection
63, 100, 125, 250, 400 10In 12In
630 5In and 10In –
800 10In –

Electric Operating Mechanism

(1) The rated operating voltage of the electric operating mechanism includes: AC50Hz 110V, 230V; DC110V, 220V and other types.

(2) The power consumption of the motor of the electric operating mechanism is shown in Table 7.

Circuit Breaker for Matching Starting Current (A) Power Consumption (W) Circuit Breaker for Matching Starting Current (A) Power Consumption (W)
XYCM1-63 ≤5 1100 XYCM1-400 ≤5.7 1200
XYCM1-100(125) ≤7 1540 XYCM1-630 ≤5.7 1200
XYCM1-125 ≤8.5 1870 – – –

Installation, Use and Maintenace

1. Close and open the circuit breaker several times to check whether the operating mechanism of the circuit breaker is stuck and whether the mechanism action is reliable.

2. The “N”, “1”, “3”, “5” of the breaker are incoming terminals, and “N”, “2”, “4”, “6” are outgoing terminals, which are not allowed to be installed reversely.

3. The cross-sectional area of the connecting wire selected for the circuit breaker wiring must be adapted to the rated current. For the cross-sectional area of the main circuit wire when using copper wire or copper bar, refer to Table 

Rated Current (A) 10 16
20		 25 32 40
50		 63 80 100 125
140		 160 180
200
225		 250 315
350		 400
Wire Cross-Sectional Area (mm²) 1.5 2.5 4 6 10 16 25 35 50 70 95 120 185 240

 

Rated Current (A) Cable Copper Bar
– Cross-Sectional Area (mm²) Quantity Size (mm×mm) Size (mm×mm) Quantity
500 150 2 30×5 – 2
630 185 2 40×5 – 2
800 240 3 50×5 – 2

Confirm that the terminal connections and fixing screws are tight and free of looseness before use.

 The single-mounted circuit breaker shall be vertically fixed in a dry and ventilated place. It shall be easy to maintain and operate, with a distance of ≥1.5 meters from the ground.

6. Confirm that there is no short circuit or ground fault between the terminals or exposed live parts.

7. After the circuit breaker trips due to overload, check the cause to eliminate the fault, and reset the bimetallic sheet inside the circuit breaker before closing and energizing.

Installation height of electric operating mechanism

cm1-Motor installation height

Install Dimension

cm1-rear panel wiring outline and mounting dimensions
cm1-outline and installation dimension for front panel wiring
cm1-insert-type wiring outline dimentions and installation dimension

Outline and Installation Dimensions

Type Item XYCM1-63 XYCM1-100, 125 XYCM1-250 XYCM1-400 XYCM1-630 XYCM1-800
L M L M L M L M L M L M
Front Wiring W 78 92 107 150 182 210
W1 50 60 70 96 118 140
W2 103 122 142 198 240 280
W3 75 90 105 144 174 211
L 135 150 165 257 270 280
L1 169 185 295 456 476 490
L2 117 132 144 224 234 243
H 74 82 68 86 86 103 107 107 112 116 116 116
H1 90.5 98.5 86 104 110 127 155 155 160 168 168 168
H2 20.5 24 24 38 42 41.5
H3 52 63 52 60.5 61 74
Rear Wiring H4 75 103 97 120.5 121 74
W4 60 72 87 124 156 178
W5 85 102 122 172 214 –
φd1 5.5 5.5 5.5 6.5 7 7
φD 18 22 24 32 40 48
L3 87 90 93 164 164 158
Plug-in L4 90 87 83 160 177 177
L5 146 172 190 282 302 –
L6 85 101.5 117 151 226 226
H5 28 50 50.5 60.5 91 91
H6 36 64 71.5 83.5 92 –
H7 – 76 86.5 106.5 110 –
H8 – 17.5 17.5 21 21 –
K 60 62 54 128 142 142
C 50 60 70 60 105 105
φd2 5.5 6.5 6.5 8.5 12 12
M 5 8 8 12 14 14
A 25 30 35 44 58 70
B 117 129 126 194 200 243
Installation Dimensions φd 3.5 4.5 4.5 7 7 7

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