Siemens MP24020 20/40A Triplex Miniature Circuit Breaker
- 20/40A
- 4 Pole
- Plug-On
Quantity
Siemens MP24020 - 20/40A Triplex Miniature Circuit Breaker
New
Quantity
Description
Built for overcurrent protection, the Siemens MP24020 miniature circuit breaker has a triplex circuit arrangement and 4 poles. It is rated 20/40A at 120/240VAC, with a 10kA interrupting rating at 120/240VAC. The MH-T series breaker uses plug-on mounting and load side lug terminals. Fixed thermal magnetic tripping provides long-time and instantaneous protection. It is UL and CSA approved and meets RoHS, REACh, SWD and HACR standards.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MP24020 |
| Series | MH-T |
| Amperage | 20/40A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | MP |
|---|---|
| Terminal Type | Lugs |
| For Use With | Murray Loadcenters |
| Wire Gauge | 8-6 AWG (Cu), 8-4 AWG (Al) |
| Max Wire | 4 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Special Classification | Triplex |
|---|---|
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
9 answersWhat voltage and phase should I select the Siemens MP24020 for?
The Siemens MP24020 is rated for 120/240VAC, single-phase service. Match these ratings to the circuit's voltage and phase when selecting the breaker.
How does the 10kA interrupting rating affect breaker selection?
The interrupting rating is 10kA at 120/240VAC. The available fault current at the installation point must not exceed that rating.
How does the thermal-magnetic trip work, and can I adjust it?
The thermal element provides long-time overcurrent protection, while the magnetic element provides instantaneous response to high fault current. Both trip settings are fixed, so selection depends on the breaker ratings rather than field adjustment.
How is this breaker mounted, and where do the load conductors terminate?
The breaker uses plug-on mounting, and outgoing load conductors terminate at load-side lugs. These features define the mounting method and conductor termination method for installation.
What copper and aluminum wire sizes can I terminate?
The wire range is AWG 8 to AWG 6 for copper and AWG 8 to AWG 4 for aluminum. Select the conductor within the range for its material, while also meeting the protected circuit's ampacity requirements.
Does the breaker require a neutral connection?
A neutral connection is not applicable to this breaker, so installation does not require a breaker neutral termination. Circuit neutral wiring remains separate from the breaker's load-side connections.
What does the HACR marking mean for circuit selection?
HACR means heating, air conditioning and refrigeration. The marking supports use in those applications; select the breaker ratings to meet the equipment's circuit protection requirements.
What does SWD mean when using the breaker for lighting control?
SWD indicates switching-duty suitability for fluorescent lighting circuits. It matters when the breaker will be used to switch the lighting load as well as provide overcurrent protection.
How should I use the 20/40A ratings when selecting this breaker?
Match the 20/40A amperage rating to the circuit's load and conductor ampacity when selecting overcurrent protection.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.