Square D MHBC230 Miniature Circuit Breaker
- 30A
- 2 Pole
- Plug-On
Quantity
Square D MHBC230 - 30A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Designed to handle residential loads, the Square D MHBC230 functions as a 2-pole, 30A miniature breaker. It utilizes thermal-magnetic trip technology to deliver long-time and instantaneous protection across 120/240VAC circuits. The plug-on configuration allows easy installation into Square D mobile home panels, along with Siemens, Murray, and Eaton BR load centers. It substitutes MP230, Q230, and BR230 parts. With a 10 kAIC rating, this mobile home-rated breaker is HACR certified.Specifications
| Brand | Square D |
|---|---|
| Part Number | MHBC230-R |
| Series | MHBC |
| Amperage | 30A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Mobile Home Panels, Siemens Load Centers, Murray Load Centers, Eaton BR Load Centers |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Standards | UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Quick-Make/Quick-Break |
Product FAQs
5 answersWhich load centers are compatible with the MHBC230 circuit breaker?
This breaker is primarily designed for Square D Mobile Home Panels. It is also physically compatible with Siemens, Murray, and Eaton BR load centers. Always check your specific panel label to confirm that MHBC series breakers are listed as an approved replacement type before installation.
What wire sizes and materials are supported by the terminals on this breaker?
The terminal lugs accept conductors ranging from 14 AWG to 8 AWG. They are rated for both aluminum (Al) and copper (Cu) wire. When installing aluminum conductors, ensure the wire is properly prepped and an approved antioxidant compound is applied.
What does the LI trip function code mean for this breaker?
The LI designation indicates a fixed thermal magnetic trip unit with Long-Time and Instantaneous protection. The long-time thermal element prevents nuisance tripping during temporary overloads, while the instantaneous magnetic element trips immediately during a short circuit to protect the system.
Why is the MHBC series classified as a legacy breaker?
The MHBC falls under the M Frame group of legacy molded case circuit breakers. It is often required for older Square D mobile home panels that were designed for this specific breaker profile, rather than the modern QO or Homeline series.
Does this breaker provide GFCI or AFCI protection?
No, the MHBC230 is a standard thermal magnetic circuit breaker. It provides overload and short circuit protection but does not include ground fault (GFCI) or arc fault (AFCI) detection capabilities.
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