Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Siemens Q21520CT 15/20A Triplex Miniature Circuit Breaker
- 15/20A
- 4 Pole
- Plug-On
Siemens
Q21520CT
15/20A Triplex Miniature Circuit Breaker
Brand
Siemens
SKU
Q21520CT
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens Q21520CT - 15/20A Triplex Miniature Circuit Breaker
Re-Certified
Quantity
Quantity
Siemens Q21520CT - 15/20A Triplex Miniature Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q21520CT |
| Series | QT |
| Amperage | 15/20A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers (Type EQ, PL, ES, Ultimate) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Triplex |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR, SWD (15A Poles), UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Sold out
Quantity
Siemens Q21520CT - 15/20A Triplex Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | Q21520CT-R |
| Series | QT |
| Amperage | 15/20A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers (Type EQ, PL, ES, Ultimate) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Triplex |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR, SWD (15A Poles), UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Similar Items
15A Triplex Miniature Circuit Breaker
15/40A Triplex Miniature Circuit Breaker
15/50A Triplex Miniature Circuit Breaker
Description
Built for high-density residential applications, the Siemens Q21520CT combines two 1-pole 15A circuits and one 2-pole 20A circuit into a 2-inch module. This helps electricians add branch circuits without upgrading the panelboard. Featuring a CTL rejection clip, it mounts into Siemens EQ, PL, ES, and Ultimate load centers. It also replaces the discontinued MP21520CT. The center poles utilize a common trip mechanism for 240V loads, maintaining a 10kAIC rating at 120/240V.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q21520CT-R |
| Series | QT |
| Amperage | 15/20A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers (Type EQ, PL, ES, Ultimate) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Triplex |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR, SWD (15A Poles), UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
5 answersWhat panels are compatible with the Q21520CT breaker?
This breaker mounts into Siemens EQ, PL, ES, and Ultimate load centers that are designed to accept Type QT breakers.
How many panel spaces does the Q21520CT require?
This triplex breaker requires two standard 1-inch panel spaces to provide two 1-pole 15A circuits on the outside and one 2-pole 20A circuit on the inside.
Can the Q21520CT replace older Murray breakers?
Yes, this Siemens breaker is the direct replacement for the discontinued Murray MP21520CT.
What does the CT suffix mean on this Siemens breaker?
The CT indicates that the breaker features a CTL (Circuit Total Limiting) rejection clip. This clip prevents the breaker from being installed in panel slots that are not designed to accept tandem or quad breakers.
Are the inner poles on this breaker common trip or independent?
The inner 2-pole 20A circuit utilizes a common trip mechanism, ensuring both poles trip simultaneously to safely protect 240V loads.
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.