Square D MG27184 Miniature Circuit Breaker
- 63A
- 3 Pole
- DIN Rail
Quantity
Square D MG27184 - 63A 3 Pole Miniature Circuit Breaker
New
Quantity
Description
Designed for commercial and industrial applications, the Square D MG27184 is a 3-pole, 63A miniature circuit breaker from the Multi9 NC100H family. It provides robust thermal-magnetic protection for demanding electrical systems. This unit mounts onto standard DIN rails, making it ideal for OEM control panels and automation enclosures. Note that this model has been functionally replaced by the narrower M9F22363.Specifications
| Brand | Square D |
|---|---|
| Series | NC100H |
| Amperage | 63A |
| Poles | 3 |
| Mounting Style | DIN Rail |
| Voltage | 240VAC, 480Y/277VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 480Y/277VAC |
| Frame Type | MG |
|---|---|
| Terminal Type | Screw/Clamp Terminal |
| For Use With | DIN Rail Enclosures, OEM Control Panels |
| Wire Gauge | 14-1 AWG (Cu) |
| Max Wire | 1 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Curve | C |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No 235, IEC 60947-2, UL 1077 |
| Approval | CE, CSA, IEC, UL, UR |
| Temp Rating | -30C to 70C |
| Construction Features | Current Limiting, Trip-Free Mechanism |
Product FAQs
6 answersWhat brands are associated with the MG27184 circuit breaker?
The MG27184 is part of the legacy Multi 9 NC100H series. Depending on the year of manufacture, it may be branded as Square D, Schneider Electric, or Merlin Gerin. All three represent the exact same physical and electrical component.
What type of trip curve does the MG27184 feature?
This breaker utilizes a C-curve thermal-magnetic trip profile. The magnetic trip mechanism is calibrated to operate between 7 and 10 times the 63A rated current, which is ideal for standard industrial loads and control panels.
How much DIN rail space does the MG27184 require?
This 3-pole breaker mounts on a standard 35mm DIN rail. As an NC100H series device, it measures 27mm wide per pole, requiring a total of 81mm of horizontal space on the rail.
Is the MG27184 suitable for reverse feeding?
Yes, this breaker is rated for reverse feed applications. You can safely connect the incoming line power to either the top or bottom terminals without affecting the thermal-magnetic trip functions.
What is the modern replacement for the NC100H series breakers?
Schneider Electric has transitioned the legacy NC100H series to newer Multi 9 platforms like the C120 or C60SP series. Note that newer replacements often have a narrower footprint (18mm per pole) compared to the original 27mm per pole width of the MG27184.
Does the MG27184 provide ground fault or arc fault protection?
No, the MG27184 is a standard thermal-magnetic miniature circuit breaker designed for overcurrent and short-circuit protection. It does not include built-in GFCI or AFCI capabilities.
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