Square D MH315 Miniature Circuit Breaker
- 15A
- 3 Pole
- Bolt-On
Quantity
Square D MH315-R - 15A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Manufactured for commercial applications, the MH315 delivers reliable thermal-magnetic protection for three-phase circuits. This 15-amp miniature breaker integrates seamlessly into older electrical infrastructures. Mounts into legacy Square D MH panelboards without requiring extensive modifications. When maintaining these older enclosures, users can utilize the QOB315 as a modern substitute. Equipped with a Visi-Trip indicator, it allows facility managers to quickly spot tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | MH315-R |
| Series | MH |
| Amperage | 15A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Legacy Square D MH Panelboards |
| 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 |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator |
Product FAQs
5 answersWhich panelboards are compatible with the MH315-R circuit breaker?
This breaker is designed specifically for use with legacy Square D MH panelboards, allowing electricians to maintain older electrical infrastructure without requiring extensive panel modifications.
Is there a modern replacement available for the Square D MH315 breaker?
Yes, when maintaining older MH enclosures, the Square D QOB315 bolt-on miniature circuit breaker is commonly utilized as a modern substitute.
How can maintenance personnel identify if the MH315-R has tripped?
The breaker is equipped with a Visi-Trip indicator, providing a clear visual cue to help facility managers quickly spot faulted circuits in the panelboard.
What type of protection does the trip unit on the MH315-R provide?
It utilizes a fixed thermal-magnetic trip mechanism to deliver reliable long-time protection against overloads and instantaneous protection against short circuits.
How is the MH315-R secured inside the panelboard?
It features a bolt-on mounting style that fastens directly to the panelboard bus, ensuring a secure and vibration-resistant connection for commercial applications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
- DLDeanna L.Verified BuyerReviewingSquare D MH36800 - 800A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/11/26Square D MH36800 - 800A 3 Pole Molded Case Circuit Breaker
Another satisfied customer.
- SBSteve B.Verified BuyerReviewingSquare D MH36600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/23/26Square MH36600
Breaker was as advertised excellent condition
- SAStewart A.ReviewingSquare D MH38 Panel Board EnclosureI recommend this productRated 5 out of 5 stars3/25/19not at local supply
got what I needed, because it was not available at my local supply house.
- WWWilliam W.ReviewingSquare D MH32 Panel Board EnclosureI recommend this productRated 5 out of 5 stars7/1/18INSIDE THE BOX
Great Buy ! Shipped on time. No Damage. Just what we ordered Thanks