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China ARM5 Series Plug-In Type MCCBs - Leading Suppliers & Factory for Easy Installation and Replacement
Core role and structural differences
| Type | Core Role | Structural Features | Operation and Safety |
|---|---|---|---|
| Plug-in (Front Panel) | It combines quick replacement with intuitive wiring and is compatible with standard cabinet wiring and mass assembly. | The insert base is mounted on the front of the panel, with the terminals facing outwards; wiring is completed on the front of the panel, making installation intuitive and requiring no special drilling. | Replacement can be performed by simply disconnecting the power and unplugging. Wiring and maintenance require space in front of the panel, and live parts are easily accessible, so caution is advised. |
| Plug-in (Rear Panel) | This achieves concealed wiring behind the panel and no wiring at the front for maintenance, improving cabinet neatness and operational safety. | The terminals are located at the rear of the panel; the base can be installed through the panel or led to the rear of the panel using extension terminals; holes must be drilled according to specifications. | Replacement requires no wire removal, and front-end operations are less likely to come into contact with live terminals, making it safer; however, space must be reserved behind the board for wiring and heat dissipation. |
Key Functions Breakdown
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1. Common function
- Quick replacement and maintenance: With the plug-in base and main body, replacement can be performed without disconnecting the wires when a fault occurs, shortening power outage and maintenance time and improving power supply continuity.
- Reduce wiring error rate: The base is pre-connected with power and load wires, and the main body is only responsible for plugging and unplugging, reducing the risk of incorrect or missing connections caused by repeated wiring.
- Adaptable to standardized cabinet sets: Both methods can be integrated into complete designs such as drawer cabinets and fixed cabinets. The base and cabinet body are pre-installed, and the main body is plug-and-play, improving assembly efficiency.
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2. Insert-type front panel exclusive function
- Simplified installation and commissioning: Exposed terminals make wiring, calibration, and capacity expansion more intuitive, suitable for mass production and rapid on-site assembly.
- Compatible with common accessories: Adapts to auxiliary handles, electric operating mechanisms, etc. for front panel operation, without additional modification costs.
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3. Insert-type panel with exclusive function
- Optimize cabinet layout: Hide wiring behind the panel, leaving only the operating surface at the front, reducing cabinet size or increasing component installation density.
- Improved operational safety: When operators are working in front of the panel, it is difficult for them to touch the live terminals on the back of the panel, reducing the risk of electric shock.
- Adaptable to specific installation scenarios: Such as back wiring in drawer cabinets, wall-mounted/embedded cabinets, and avoiding excessive space usage for front wiring.
ARM5 / ARM5E(i) plug-in dimensions and installation dimensions
The plug-in type installation dimensions of ARM5 and ARM5E are shown in the table:
| Model | C | C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | E | E1 | E2 | E3 | E4 | D5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M5-160/250, M5E(i)-160/250 | 17.5 | 35 | 70 | 54.5 | 109 | 144 | 35 | 70 | 105 | 95 | 190 | 87 | 174 | 75 | 37.5 |
| M5-400/630, M5E(i)-400/630 | 22.5 | 45 | 90 | 71.5 | 143 | 188 | 50 | 100 | 145 | 150 | 300 | 137 | 274 | 150 | 75 |
| Model | L | L1 | L2 | H | H1 | B | B1 | B2 | U | Φd |
|---|---|---|---|---|---|---|---|---|---|---|
| M5-160/250, M5E(i)-160/250 | 52.5 | 105 | 140 | 99.5 | 199 | 27 | 45 | 75 | ≤32 | 6 |
| M5-400/630, M5E(i)-400/630 | 70 | 140 | 185 | 158 | 315 | 27 | 45 | 100 | ≤32 | 6 |
Frequently Asked Questions (FAQ)
A1: It allows for quick replacement and maintenance without disconnecting the main wires. This significantly shortens power outage times and minimizes maintenance downtime when a fault occurs.
A2: The base is pre-connected with the power and load wires during assembly. The main breaker body is simply plugged in or unplugged, which avoids the risk of incorrect or missing connections caused by repeated manual wiring.
A3: Front-panel plug-ins have exposed terminals facing outwards with wiring completed on the front, offering intuitive access. Rear-panel plug-ins have terminals located at the back, hiding the wiring behind the panel for a cleaner cabinet layout and enhanced safety.
A4: Yes. Because the wiring is concealed behind the panel, operators working at the front are prevented from accidentally touching live terminals, which greatly reduces the risk of electric shock.
A5: No, the dimensions vary depending on the model capacity. For example, the C1 dimension is 35mm for the M5-160/250 models and 45mm for the M5-400/630 models.
